CN110735886B - Inertial container with variable inertial mass coefficient for commercial vehicle under self-adaptive working condition - Google Patents
Inertial container with variable inertial mass coefficient for commercial vehicle under self-adaptive working condition Download PDFInfo
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- CN110735886B CN110735886B CN201910998984.XA CN201910998984A CN110735886B CN 110735886 B CN110735886 B CN 110735886B CN 201910998984 A CN201910998984 A CN 201910998984A CN 110735886 B CN110735886 B CN 110735886B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/30—Flywheels
- F16F15/31—Flywheels characterised by means for varying the moment of inertia
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/14—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers
- F16F15/1407—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers the rotation being limited with respect to the driving means
- F16F15/1414—Masses driven by elastic elements
- F16F15/1421—Metallic springs, e.g. coil or spiral springs
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Abstract
The invention relates to an inertial container with variable inertial mass coefficient for a commercial vehicle under self-adaptive working conditions, and belongs to the technical field of vehicular inertial containers. The inerter comprises an inerter main body, a flywheel assembly, a metamorphic mechanism and a connecting rod sliding block mechanism; the inertia container main body converts the vertical movement of the frame and the axle into the rotation of the flywheel assembly, thereby achieving the effect of increasing the virtual mass of the inertia container; the flywheel assembly can adaptively adjust the inertia mass coefficient according to the external excitation frequency, so that the inertia mass coefficient is continuously variable, and when the vehicle is under the full-load working condition, the inertia container does not work, thereby ensuring that the suspension system offset frequency is the designed full-load offset frequency without increasing the stress of the suspension system and prolonging the service life of the suspension system.
Description
Technical Field
The invention relates to the technical field of vehicle inerter, in particular to an inerter with a variable inertial mass coefficient under a self-adaptive working condition of a commercial vehicle.
Background
In 2001, the Smith professor of cambridge university in england firstly proposes the concept of the inertial container when researching the electromechanical similar theory, and verifies for the first time that the inertial container has the advantage of improving the performance of the traditional passive suspension, because the inertial container replaces a mass element, the asymmetric relation between a mechanical system and a circuit system caused by the single end point characteristic of the mass element is solved, so that the electromechanical simulation theory is completely equivalent, the mechanical and electrical simulation system is a breakthrough of a mass-Spring-damping structure system, and the structure of the inertial container-Spring-damping (inertial-Spring-Damper, ISD) is added into the passive suspension, the vibration isolation performance of the passive suspension is superior to that of the corresponding traditional passive suspension, and compared with semi-active and active suspensions, the structure of the passive suspension is simple, energy consumption is not needed, and the development direction of the future vehicle suspension is met.
In a vehicle ISD suspension system, an inertial container is one of important elements, the inertial force of the inertial container is in direct proportion to the relative acceleration between two end points, the proportionality coefficient is an inertial mass coefficient, the essence of the inertial mass coefficient is to convert the inertia of an object into virtual mass, and the inertial mass coefficient can reach thousands of times of the actual physical mass of the inertial container. However, under different working conditions, the inerter coefficient of the conventional inerter is not adjustable, and from the research results of the conventional inerter coefficient-variable inerter, although the inerter coefficient can be varied, the inerter coefficient-variable inerter has the defects of difficult processing, time lag control, continuously variable inerter coefficient, unidirectional increase of the inerter coefficient only under the transient impact working condition, and the like, and the inerter which is reliable in work, free of time lag, continuously variable in inerter coefficient and capable of adaptively adjusting the inerter coefficient according to the external excitation frequency is urgently needed to be designed.
Moreover, because the steel plate spring has the advantages of simple structure, reliable work, low price and the like, most commercial vehicles still adopt the steel plate spring as a suspension elastic element, and meanwhile, in the design process of the suspension, the offset frequency is designed according to the full load, so that the offset frequency of the vehicle is larger when the vehicle is in the idle load state.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide the inerter which is reliable in work, free of time lag phenomenon, variable in configuration under the working conditions of empty and full load of a commercial vehicle, capable of adaptively adjusting the inerter coefficient according to the external excitation frequency and continuously variable in inerter coefficient. The invention discloses a technical scheme of an inertial container with a variable inertial mass coefficient of a commercial vehicle under a self-adaptive working condition,
the inerter comprises an inerter main body, a metamorphic mechanism and a connecting rod slider mechanism, wherein mounting holes are respectively formed in the upper end of the inerter main body and the lower end of the metamorphic mechanism;
the inner part of the inerter main body is provided with a flywheel assembly, a penetrating cylindrical hole with internal threads is arranged at the axis of the flywheel assembly, a ball screw is connected with the internal threads of the cylindrical hole, the flywheel assembly is driven to rotate by the relative movement of the ball screw and the flywheel assembly, the upper part of the ball screw is provided with external threads, the lower part of the ball screw is a polished rod, and the inerter main body is connected with a metamorphic mechanism through a moving pair consisting of the polished rod at the lower part of the ball screw and a lower limiting flange of the metamorphic mechanism; the relative movement of the ball screw and the flywheel assembly drives the flywheel assembly to rotate.
Metamorphic mechanism is equipped with the glossy gag lever post that the level set up, the gag lever post contacts when being used to container work with ball's lower extreme, plays limiting displacement to ball's up-and-down motion, connecting rod slider mechanism includes connecting rod and slider, the slider cover is established on the gag lever post, drives gag lever post horizontal migration, the upper end of connecting rod articulates in the bottom one side of being used to the container main part, the lower extreme and the slider of connecting rod are articulated.
The upper end and the lower end of the inerter are respectively fixed on the frame and the axle through mounting holes, the up-and-down movement of the frame and the axle drives the inerter main body and the metamorphic mechanism to move relatively, the frame and the axle drive the ball screw to move up and down while moving relatively, the flywheel assembly is in threaded connection with the ball screw, the up-and-down movement of the ball screw is converted into the rotation of the flywheel assembly, and the purpose of increasing the virtual mass of the inerter is achieved through the rotation of the flywheel assembly.
Furthermore, the inertia container main body comprises a flywheel chamber shell and an upper limiting shell, the flywheel chamber matched with the flywheel assembly in appearance is arranged inside the flywheel chamber shell, the flywheel assembly is arranged in the flywheel chamber, the lower end of the flywheel chamber shell is opened, the upper limiting shell is connected to the lower end of the flywheel chamber shell through an upper limiting bolt, a through hole is formed in the axis of the upper limiting shell and used for a ball screw to pass through, the upper end and the lower end of the flywheel assembly are connected with the flywheel chamber shell and the upper limiting shell through angular contact ball bearings respectively, and the flywheel assembly can rotate under the driving of the ball screw in the up-and-down motion mode. The outer rings of the angular contact ball bearings at the upper end and the lower end of the flywheel assembly are in interference fit with bearing seat holes in the flywheel chamber shell and the upper limiting shell, and the inner rings of the angular contact ball bearings are in interference fit with the shaft end of the flywheel assembly, so that the flywheel assembly does not move relatively in the flywheel chamber in the axial direction and only rotates in the circumferential direction, and the effect of increasing the virtual mass of the inertia container is achieved. The flywheel assembly is in threaded connection with the ball screw, so that the up-and-down motion of the ball screw is converted into the rotation of the flywheel assembly; the flywheel chamber shell is connected with the upper limiting shell through six upper limiting bolts which are circumferentially arranged, so that the limitation of the bearing is guaranteed, and the purpose of limiting the flywheel assembly is achieved.
Furthermore, the flywheel assembly comprises a flywheel body, connecting shafts extend out of the upper side and the lower side of the flywheel body at the axle center, the connecting shafts on the two sides are respectively connected and fixed with the flywheel chamber and the upper limiting shell through bearings, the upper end and the lower end of the flywheel body are respectively symmetrically provided with 4 sliding chutes along the radial direction, the 4 sliding chutes on the upper side and the 4 sliding chutes on the lower side respectively correspond to each other in position, the cross section of each sliding chute is circular, a spring II is clamped in each sliding chute, the innermost ends of all the sliding chutes are provided with mass blocks, the shapes of the lower parts of the mass blocks are matched with the sliding chutes and clamped in the sliding chutes, one end of each spring II is connected with the lower part of each mass block, the other end of each spring II is provided with a limiting baffle, the four corners of each limiting baffle are fixed on the side surface of the flywheel body through cross, the mass block can compress the spring to move along the sliding groove in the radial direction under the action of centrifugal force. When the flywheel body rotates, the centrifugal force borne by the mass block is larger than the acting force of the spring, and the mass block moves outwards in the radial direction, so that the effect of increasing the inertia of the flywheel assembly is achieved, and the purpose of increasing the inertia coefficient of the inertia container is achieved.
Further, metamorphic mechanism includes the lower extreme casing, be provided with vertical chamber and horizontal cavity in the lower extreme casing respectively, the medial extremity in horizontal cavity and the middle part intercommunication in vertical chamber, the top in vertical chamber has lower spacing ring flange through the lower spacing bolted connection that 6 circumference were arranged, spacing ring flange axle center department opens down and has the perforation to supply the polished rod of ball lower part to pass, ball's downside tip is equipped with the fenestrate lower extreme of lead screw stop block lower spacing ring flange, the cross-section of the polished rod of ball lower part is the fillet square, and the perforation of lower spacing flange also is the fillet square. The round-corner square-section polished rod at the lower part of the ball screw ensures that the inerter main body and the metamorphic mechanism do not rotate relatively in the circumferential direction and only move up and down in the axial direction.
Furthermore, a horizontal limiting flange plate is fixedly connected to the outer side end of the horizontal cavity through a horizontal limiting bolt, a through hole in a round corner square shape is formed in the axis of the horizontal limiting flange plate, the limiting rod penetrates through the through hole of the horizontal limiting flange and is inserted into the horizontal cavity, the cross section of the part, inserted into the horizontal cavity, of the limiting rod is in the round corner square shape, the part, exposed to the outside, of the limiting rod is a cylindrical rod, the sliding block is sleeved on the cylindrical rod of the limiting rod and can slide on the limiting rod, and the outer side end of the limiting rod protrudes to form a baffle plate to block the sliding block; the tip of the medial extremity of gag lever post is equipped with half spherical stop, and the root of hemisphere stop is equipped with the boss, can only make the hemisphere stop can visit into vertical chamber, the first half of hemisphere stop is equipped with the opening, when the hemisphere stop of gag lever post is visited into vertical chamber completely, ball's lower side end is pressed on the opening of hemisphere stop, the part cover that the gag lever post is located horizontal intracavity is equipped with endocentric spring I, spring I's both ends compress tightly respectively on the root of hemisphere stop and horizontal spacing ring flange. When the inerter is in no-load, the hemispherical stopper of the limiting rod completely extends into the vertical cavity, the lower side end of the ball screw is pressed on the opening of the hemispherical stopper and cannot move downwards, and the lower end of the ball screw is fixed between the lower limiting flange and the opening bulb of the limiting rod; the outer side end of the limiting rod is provided with a boss-shaped baffle, when the transition is from no-load to full-load, the connecting rod drives the sliding block to move towards the outer side end of the limiting rod, the sliding block drives the limiting rod to slide towards the outer side end by pushing the boss-shaped baffle at the rear end of the limiting rod, and the hemispherical stopper is pulled into the horizontal cavity, so that the lower side end of the ball screw is loosened; in the process of transition from full load to no load, the ball screw moves upwards, the screw stop head at the lower end of the ball screw contacts with the lower spherical surface of the hemispherical stop head of the limiting rod to push the limiting rod to move, and the sliding block is sleeved on the limiting rod and cannot limit the movement of the limiting rod at the moment.
Furthermore, the connecting rod is integrally in an arc shape, connecting holes are formed in two ends of the connecting rod respectively, a support hole is formed in the side face of the bottom of the flywheel chamber shell of the inertial container main body, and the connecting holes in the upper end and the lower end of the connecting rod are connected with the support hole and the sliding block through bolts and deep groove ball bearings respectively. The connecting rod is designed into an arch shape, the arch back is upward, and when the upper part and the lower part of the inerter move relatively, the connecting rod is prevented from interfering with the shell at the lower part of the inerter.
Furthermore, the connecting surface of the screw stopper at the lower end of the ball screw and the rod body is spherical, the lower end of the through hole of the lower limiting flange plate is correspondingly spherical concave, and a rubber pad is arranged on the spherical concave to reduce the impact force and abrasion between the screw stopper and the contact surface of the lower limiting flange plate. The lead screw stop is spherical with the design of being connected of the body of rod, and when ball upward movement contacted with the hemisphere stop of gag lever post like this, only two spherical point contacts between the two reduce frictional force.
Furthermore, the mounting hole at the upper end of the inerter main body and the upper end point rubber bushing are in interference fit to form an upper end point of the inerter, the mounting hole at the lower end of the metamorphic mechanism and the lower end point rubber bushing are in interference fit to form a lower end point of the inerter, and the axis of the lower end point rubber bushing is perpendicular to the axis of the upper end point rubber bushing.
The invention has the beneficial effects that: the invention provides an inertial container with variable inertial mass coefficient of a commercial vehicle under a self-adaptive working condition, which is reliable in work and free of time lag phenomenon, can be self-reconstructed and recombined based on a metamorphic principle under the empty and full-load working conditions, works under the no-load working condition of the vehicle, achieves the effect of reducing the no-load offset frequency by increasing the virtual mass of the inertial container, can adaptively adjust the inertial mass coefficient according to external excitation frequency, enables the inertial mass coefficient to be continuously variable, does not work under the full-load working condition of the vehicle, ensures that the offset frequency of a suspension system is the designed full-load offset frequency, does not increase the stress of the suspension system, and prolongs the service life of the suspension system.
Drawings
FIG. 1 is a schematic structural diagram of an inertial container in a working state;
FIG. 2 is a schematic structural diagram of an inerter in an inoperative state;
FIG. 3 is a schematic view of a flywheel configuration;
FIG. 4 is a schematic view of the flywheel profile;
FIG. 5 is a schematic diagram of the working shape of the inerter;
FIG. 6 is a schematic diagram of an inactive configuration of the inerter.
1 upper end point rubber bushing, 2 ball screws, 3 flywheel chamber shells, 4 angular contact ball bearings, 5 flywheel assemblies, 6 upper limiting bolts, 7 upper limiting shells, 8 connecting bolts, 9 deep groove ball bearings, 10 connecting rods, 11 lower limiting bolts, 12 lower limiting flange plates, 13 lower end shells, 14 horizontal limiting flange plates, 15 springs I, 16 limiting rods, 17 sliding blocks, 18 lower end point rubber bushings, 19 flywheel bodies, 20 limiting baffle plates, 21 cross-groove screws, 22 springs II and 23 mass blocks.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments.
As shown in figure 1, the invention relates to a commercial vehicle adaptive working condition inertial mass coefficient variable inertial container which comprises an inertial container main body, a metamorphic mechanism and a connecting rod sliding block mechanism. The inerter body is connected with the metamorphic mechanism through a moving pair consisting of a polished rod with a square section and a rounded corner at the lower part of the ball screw 2 and a lower limiting flange 12, and the inerter body is in threaded connection with the upper part of the ball screw 2; the metamorphic mechanism is connected with the lower end of the connecting rod sliding block mechanism through a sliding pair consisting of a polished rod with a circular section at the rear end of a limiting rod 16 and a sliding block 17; the upper end of the connecting rod sliding block mechanism is connected with the inertial container main body through a revolute pair.
The inerter main body comprises an upper end point rubber bushing 1, a threaded rod on the upper part of a ball screw 2, a flywheel chamber shell 3, an angular contact ball bearing 4, a flywheel assembly 5, an upper limiting bolt 6 and an upper limiting shell 7; the upper end point rubber bushing 1 and the upper end hole of the flywheel chamber shell 3 are in interference fit to form an upper end point of the inertia container, and the inertia container is installed on a commercial vehicle frame, so that impact and vibration transmitted to a vehicle body are reduced; the angular contact ball bearings 4 are used in a matched mode in pairs, the outer ring of the upper angular contact ball bearing 4 is in interference fit with a bearing seat hole in the flywheel chamber shell 3, the outer ring of the lower angular contact ball bearing 4 is in interference fit with a bearing seat hole in the upper limiting shell 7, and the inner rings of the two are in interference fit with the upper and lower side shaft ends of the flywheel assembly 5, so that the flywheel assembly 5 is guaranteed not to move relatively in the flywheel chamber 3 in the axial direction and does rotary motion in the circumferential direction, and the effect of increasing the virtual mass of the inertia container is achieved; the flywheel assembly 5 is in threaded connection with the ball screw 2, so that the up-and-down motion of the ball screw 2 is converted into the rotation of the flywheel assembly 5; the upper limit shell 7 is connected to the lower end of the flywheel chamber shell 3 and is fixedly connected through six upper limit bolts 6 which are circumferentially arranged, so that the limitation of the diagonal contact ball bearing 4 is guaranteed, and the purpose of limiting the flywheel assembly 5 is achieved.
As shown in fig. 3 and 4, the flywheel assembly comprises a flywheel body 19, a limit baffle 20, a cross-shaped groove screw 21, a spring ii 22 and a mass block 23; connecting shafts extend out of the upper side and the lower side of the flywheel body 19 at the shaft center, inner rings of the angular contact ball bearings 4 fixedly connected with the flywheel chamber and the upper limiting shell are respectively fixed on the connecting shafts at the two sides, the upper side and the lower side of the flywheel body 19 are respectively symmetrically provided with 4 sliding grooves along the radial direction, and the 4 sliding grooves at the upper side and the 4 sliding grooves at the lower side correspond to each other in position. The cross-section of spout is circular, and the quality piece 23 lower extreme is circular boss and installs in the spout, all is equipped with quality piece 23 in every spout. The mass block 23 can slide in the sliding groove along the radial direction, so as to achieve the purpose of increasing the inertia of the flywheel assembly 5. A spring II 22 is arranged in each sliding groove, one end of each spring II 22 is connected with a mass block 23, the other end of each spring II 22 is in contact with a limiting baffle 20, the two springs II 22 corresponding to the upper side and the lower side of each limiting baffle 20 use the same limiting baffle 20, and four corners of each limiting baffle 20 are fixed on the side face of the flywheel body 19 through cross groove screws 21. When the flywheel body 19 rotates, the centrifugal force borne by the mass block 23 is larger than the acting force of the spring II, and the mass block 23 moves outwards in the radial direction, so that the effect of increasing the inertia of the flywheel assembly 5 is achieved, and the purpose of increasing the inertia coefficient of the inertia container is achieved.
The lower part of the ball screw 2 is a polished rod with a section in the positive direction of a fillet and is connected with a metamorphic mechanism. As shown in fig. 1, the metamorphic mechanism comprises a lower limit bolt 11, a lower limit flange 12, a lower end shell 13, a polish rod at the lower part of the ball screw 2, a horizontal limit flange 14, a spring i 15, a limit rod 16 and a lower end point rubber bushing 18. A vertical cavity and a horizontal cavity are respectively arranged in the lower end shell 13, and the innermost side of the horizontal cavity is communicated with the middle part of the vertical cavity. The top end of the vertical cavity is connected with a lower limiting flange 12 through 6 lower limiting bolts 11 which are circumferentially arranged. The axis of the lower limiting flange 12 is provided with a square through hole with a round angle for a polish rod at the lower part of the ball screw 2 to pass through, and the sizes of the two are matched. The lower end of the lower limiting flange 12 is recessed to form a spherical groove, a rubber pad is arranged in the spherical groove, the lower end of the corresponding ball screw 2 is a screw stopper with the upper side being hemispherical, and when the screw stopper is contacted with the spherical groove at the lower end of the lower limiting flange 12, the rubber pad can reduce impact and abrasion.
The outer side end of the horizontal cavity is fixedly connected with a horizontal limiting flange 14 through 6 horizontal limiting bolts which are uniformly distributed in the circumferential direction, and a through hole which is in a round-corner square shape is formed in the axis of the horizontal limiting flange 14. The limiting rod 16 penetrates through a through hole of the horizontal limiting flange 14 and is inserted into the horizontal cavity, the limiting rod 16 is divided into two sections, the section of the limiting rod inserted into the horizontal cavity is a square-column-shaped rod with a round-corner square section, and the section exposed outside is a cylindrical rod. The slider 17 is sleeved on the cylindrical rod of the limiting rod 16 and can slide on the cylindrical rod, and the outer side end of the limiting rod 16 protrudes to form a baffle to block the slider 17. The inner side end of the limiting rod 16 is provided with a hemispherical stop, the root of the hemispherical stop is provided with a boss, and the hemispherical stop can only extend into the vertical cavity. The upper half part of the hemispherical stopper is provided with a gap. When the hemispherical stopper of the stopper rod 16 is completely inserted into the vertical cavity, the lower side end of the ball screw 2 is pressed on the upper surface of the opening of the hemispherical stopper.
The part of the limiting rod 16 located in the horizontal cavity is sleeved with a spring I15, two ends of the spring I15 are respectively pressed on the hemispherical stop head and the horizontal limiting flange 14, and the spring I15 and the limiting rod 16 are assembled concentrically. When the inertial container is in a transition process from full load to no load, the ball screw 2 moves from bottom to top, and a screw stop at the lower end of the ball screw is in point contact with the lower spherical surface of the hemispherical stop with the notch of the limiting rod 16, so that the limiting rod 16 is pushed to move rightwards, and the action of frictional resistance is reduced; when the idle load height is reached, the hemispherical stopper of the limiting rod 16 is completely inserted into the vertical cavity, and the lower side end of the ball screw 2 is pressed on the upper horizontal end surface of the opening of the hemispherical stopper, so that the lower end of the ball screw 2 is fixed between the lower limiting flange 12 and the hemispherical stopper of the limiting rod 16, and the inertial container starts to work; when the empty load is transited to the full load, the sliding block 17 drives the limiting rod 16 to slide rightwards by pushing the boss-shaped baffle plate at the outer side end of the limiting rod 16, the hemispherical stopper is pulled back to the horizontal cavity, and the lower side end of the originally fixed ball screw 2 is loosened, so that the inertial container does not work.
The hole at the bottom of the lower end shell 13 and the lower end point rubber bushing 18 are in interference fit to form a lower end point of the inertial container, the lower end point is installed on the axle, the axis of the lower end point rubber bushing 18 is perpendicular to the axis of the upper end point rubber bushing 1, and when the frame and the wheel swing relatively, the upper part and the lower part of the inertial container can still move up and down coaxially and relatively
The connecting rod-sliding block mechanism comprises an arched connecting rod 10, a sliding block 17, a connecting bolt 8 and a deep groove ball bearing 9. The slide block 17 is sleeved at the outer side end of the limiting rod 16. Connecting holes are respectively formed in two ends of the connecting rod 10, a support hole is formed in the lower end of the upper limiting shell 7 and one side of the connecting rod 10, and the connecting holes in the upper end of the connecting rod 10 are connected with the support holes through connecting bolts and deep groove ball bearings 9. A connecting hole at the upper end of the connecting rod 10 is in interference fit with the outer ring of the deep groove ball bearing 9, the inner ring of the deep groove ball bearing 9 is in clearance fit with the connecting bolt 8, the two sleeves are pressed by the support and are pressed at two sides of the inner ring of the deep groove ball bearing 9, so that the inner ring of the deep groove ball bearing 9 can be fixed in the axial direction, and further is fixed on a support hole in a matched manner through the connecting bolt 8 and a nut, and a revolute pair is formed; similarly, the lower end of the connecting rod 10 is connected with a sliding block 17 through a connecting bolt 8 and a deep groove ball bearing 9 with the same specification to form a revolute pair, and the sliding block 17 is driven to slide through the connecting rod 10. The connecting rod 10 is designed into an arc shape, and when the upper part and the lower part of the inerter move relatively, the connecting rod 10 is prevented from interfering with a shell of the lower part of the inerter.
The working principle of the inerter of the commercial vehicle under the empty and full load working conditions is described in detail below with reference to fig. 1, fig. 2, fig. 5 and fig. 6:
structure 1: as shown in figures 1 and 5, in the process of transition from full load to no load of the inerter, the inerter body and the metamorphic mechanism move in opposite directions, a lead screw stop at the lower end of a ball screw and a hemispherical stop with a notch on a limiting rod move upwards through point contact, meanwhile, the limiting rod slides rightwards under the pressure of the lead screw stop at the lower end of the ball screw, when the no-load height is reached, the limiting rod resets under the action of a spring force, the hemispherical stop of the limiting rod moves to the lower side of the ball screw again, the lower end surface of the ball screw is contacted with the upper horizontal end surface of the notch of the hemispherical stop of the limiting rod, so that the lower end of the ball screw is fixed between a lower limiting flange and the hemispherical stop, therefore, the speed of external excitation vibration can be converted into the speed of rotation of a flywheel assembly, and further, the distance from a mass center mass block to the axle center of the flywheel assembly can be adjusted, and the inertance coefficient can be continuously, thereby achieving the purpose of reducing the no-load offset frequency.
Structure 2: as shown in fig. 2 and 6, when the inertial container is in a transition process from no-load to full-load, the inertial container body and the metamorphic mechanism move in opposite directions, the sliding block is pushed to move rightwards through the connecting rod, and then the sliding block drives the limiting rod to slide rightwards through pushing the boss-shaped baffle at the rear end of the limiting rod, so that the lower side end of the original fixed ball screw is loosened, the inertial container does not work, the frequency offset of the suspension system is guaranteed to be the designed full-load frequency offset, the stress of the suspension system is not increased, and the service life of the suspension system is prolonged.
The above description is only a preferred embodiment of the present invention, and the scope of the present invention should not be limited thereby, and all the simple equivalent changes and modifications made by the claims and the description of the present invention are still within the scope of the present invention.
Claims (8)
1. The inertial container with the variable inertial mass coefficient under the self-adaptive working condition of the commercial vehicle is characterized by comprising an inertial container main body, a metamorphic mechanism and a connecting rod slider mechanism, wherein mounting holes are respectively formed in the upper end of the inertial container main body and the lower end of the metamorphic mechanism;
the inner part of the inerter main body is provided with a flywheel assembly, a penetrating cylindrical hole with internal threads is arranged at the axis of the flywheel assembly, a ball screw is connected with the internal threads of the cylindrical hole, the upper part of the ball screw is provided with external threads, the lower part of the ball screw is a polished rod, and the inerter main body is connected with a metamorphic mechanism through a moving pair consisting of the polished rod at the lower part of the ball screw and a lower limiting flange of the metamorphic mechanism;
metamorphic mechanism is equipped with the glossy gag lever post that the level set up, the gag lever post contacts when being used to container work with ball's lower side end, plays limiting displacement to ball's up-and-down motion, connecting rod slider mechanism includes connecting rod and slider, the slider cover is located on the gag lever post, drives gag lever post horizontal migration, the upper end of connecting rod articulates in the bottom one side of being used to the container main part, the lower extreme and the slider of connecting rod are articulated.
2. The commercial vehicle adaptive working condition inertial mass coefficient variable inertial container according to claim 1, wherein the inertial container body comprises a flywheel chamber shell and an upper limiting shell, a flywheel chamber matched with the appearance of the flywheel assembly is arranged inside the flywheel chamber shell, the flywheel assembly is arranged in the flywheel chamber, the lower end of the flywheel chamber shell is open, the upper limiting shell is connected to the lower end of the flywheel chamber shell through an upper limiting bolt, a through hole is formed in the axis of the upper limiting shell for the ball screw to pass through, the upper end and the lower end of the flywheel assembly are respectively connected with the flywheel chamber shell and the upper limiting shell through bearings, and the flywheel assembly can rotate under the driving of the ball screw moving up and down.
3. The inertial container with variable inertial mass coefficient for commercial vehicle according to claim 2 is characterized in that the flywheel assembly comprises a flywheel body, connecting shafts extend from the upper side and the lower side of the flywheel body at the axle center, the connecting shafts at the two sides are respectively connected and fixed with a flywheel chamber and an upper limiting shell through bearings, the upper end face and the lower end face of the flywheel body are respectively provided with 4 sliding grooves symmetrically along the radial direction, the 4 sliding grooves at the upper side and the 4 sliding grooves at the lower side respectively correspond to each other in position, the cross section of each sliding groove is circular, springs II are clamped in the sliding grooves, mass blocks are inserted in the innermost ends of all the sliding grooves, the lower parts of the mass blocks are adapted to the sliding grooves and clamped in the sliding grooves, one end of each spring II is connected with the lower part of the mass block, the other end of each spring II is provided with a limiting baffle, and one limiting baffle is used, the four corners of the limiting baffle are fixed on the side face of the flywheel body through cross groove screws, and when the flywheel body rotates, the mass block can compress the spring to move along the sliding groove in the radial direction under the action of centrifugal force.
4. The inertial container with the variable inertial mass coefficient according to claim 1, 2 or 3 is characterized in that the metamorphic mechanism comprises a lower end shell, a vertical cavity and a horizontal cavity are respectively arranged in the lower end shell, the inner side end part of the horizontal cavity is communicated with the middle part of the vertical cavity, the top end of the vertical cavity is connected with a lower limiting flange through a lower limiting bolt, a through hole with a square fillet is formed in the axis of the lower limiting flange for a polish rod at the lower part of the ball screw to pass through, a screw stop head is arranged at the lower side end part of the ball screw and is clamped at the lower side end of the through hole of the lower limiting flange, and the cross section of the polish rod at the lower part of the ball screw is in the square fillet.
5. The inertial container with the variable inertial mass coefficient under the adaptive working condition of the commercial vehicle according to claim 4, wherein a horizontal limiting flange is fixedly connected to the outer side end of the horizontal cavity through a horizontal limiting bolt, a through hole with a square rounded corner is formed in the axis of the horizontal limiting flange, the limiting rod penetrates through the through hole of the horizontal limiting flange and is inserted into the horizontal cavity, the section of the part, inserted into the horizontal cavity, of the limiting rod is square rounded corner, the part exposed outside is a cylindrical rod, the sliding block is sleeved on the cylindrical rod of the limiting rod, and the outer side end of the limiting rod protrudes to form a baffle plate to block the sliding block; the tip of the medial extremity of gag lever post is equipped with half spherical stop, and the root of hemisphere stop is equipped with the boss, can only make the hemisphere stop can visit into vertical chamber, the first half of hemisphere stop is equipped with the opening, when the hemisphere stop of gag lever post is visited into vertical chamber completely, ball's lower side end is pressed on the opening of hemisphere stop, the part cover that the gag lever post is located horizontal intracavity is equipped with endocentric spring I, the both ends of spring I compress tightly respectively on the root boss and the horizontal spacing ring flange of hemisphere stop.
6. The commercial vehicle adaptive working condition inerter with variable inerter coefficient according to claim 5, wherein the connecting rod is in an arch shape as a whole, connecting holes are formed in two ends of the connecting rod respectively, a support hole is formed in the side face of the bottom of the upper limiting shell of the inerter main body, and the connecting holes in the upper end and the lower end of the connecting rod are connected with the support hole and the sliding block respectively through a bolt and a deep groove ball bearing.
7. The adaptive working condition inertial mass coefficient variable inertial container of a commercial vehicle according to claim 4, wherein a connecting surface of a lead screw stopper at the lower side end of the ball screw and the rod body is spherical, the lower end of the corresponding through hole of the lower limiting flange is spherical concave, and a rubber pad is arranged on the spherical concave to reduce impact force and abrasion between the lead screw stopper and the contact surface of the lower limiting flange.
8. The inertial container with the variable inertial mass coefficient for the commercial vehicle under the self-adaptive working condition according to claim 6, wherein the upper end point of the inertial container is formed by an installation hole in the upper end of the inertial container body and an upper end point rubber bushing in an interference fit manner, the lower end point of the inertial container is formed by an installation hole in the lower end of the metamorphic mechanism and a lower end point rubber bushing in an interference fit manner, and the axis of the lower end point rubber bushing is perpendicular to the axis of the upper end point rubber bushing.
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| CN111439087B (en) * | 2020-03-27 | 2022-08-23 | 江苏大学 | Vehicle ISD suspension active control method based on model reference adaptive control |
| CN112257194B (en) * | 2020-10-06 | 2022-09-20 | 大连理工大学 | Design method for inertia ratio self-adaptive adjustment inertia container |
| CN115030342B (en) * | 2022-05-19 | 2022-12-27 | 广州大学 | Large-tonnage inertial volume type double-order self-resetting damper with variable apparent mass |
| CN114809349A (en) * | 2022-05-19 | 2022-07-29 | 广州大学 | Large-tonnage inertial volume type self-resetting damper with variable apparent mass |
| CN114809348A (en) * | 2022-05-19 | 2022-07-29 | 广州大学 | Large-tonnage self-resetting inertial volume damper suitable for recoverable functional structure |
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| CN104315068A (en) * | 2014-08-28 | 2015-01-28 | 哈尔滨恒信防微振技术开发有限公司 | Low-frequency air spring vibration isolator with motion converter |
| CN105003591A (en) * | 2015-05-29 | 2015-10-28 | 石家庄铁道大学 | Inerter capable of adjusting inertance coefficient |
| CN204805428U (en) * | 2015-07-06 | 2015-11-25 | 山东科技大学 | Inertia adjustable flywheel |
| FR3046558B1 (en) * | 2016-01-07 | 2018-07-27 | Safran Aircraft Engines | VARIABLE INERTIAL INERTIAL FRICTION WELDING |
| CN105782342B (en) * | 2016-04-27 | 2018-03-06 | 江苏科技大学 | A kind of adjustable Ball screw type of used capacitance is used to container |
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| US10737764B2 (en) * | 2018-04-13 | 2020-08-11 | The Boeing Company | Base flight control member orientation mechanism and control |
| CN108343171B (en) * | 2018-05-07 | 2022-05-10 | 湖南科技大学 | Electromagnetic resonance type inertia damper |
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| CN209067730U (en) * | 2018-10-25 | 2019-07-05 | 华北水利水电大学 | The ternary vibration absorber of parallel connection damping and used matter unit |
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