CN109334755A - A kind of steering disc assembly for wire-controlled steering system - Google Patents

A kind of steering disc assembly for wire-controlled steering system Download PDF

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Publication number
CN109334755A
CN109334755A CN201811356442.4A CN201811356442A CN109334755A CN 109334755 A CN109334755 A CN 109334755A CN 201811356442 A CN201811356442 A CN 201811356442A CN 109334755 A CN109334755 A CN 109334755A
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China
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gear
steering
pressure release
piston
rack
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CN201811356442.4A
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CN109334755B (en
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高炳钊
孙呈祥
田萌健
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Jilin University
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Jilin University
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D5/00Power-assisted or power-driven steering
    • B62D5/001Mechanical components or aspects of steer-by-wire systems, not otherwise provided for in this maingroup
    • B62D5/005Mechanical components or aspects of steer-by-wire systems, not otherwise provided for in this maingroup means for generating torque on steering wheel or input member, e.g. feedback
    • B62D5/006Mechanical components or aspects of steer-by-wire systems, not otherwise provided for in this maingroup means for generating torque on steering wheel or input member, e.g. feedback power actuated

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)

Abstract

The invention discloses a kind of steering disc assemblies for wire-controlled steering system, belong to wire-controlled steering system technical field, including steering wheel, torque and rotary angle transmitter, damper module and torque motor module;Torque and rotary angle transmitter measure the torque and corner of steering wheel;Damper module is used to simulate damping torque to steering wheel;Piston elevating mechanism is constituted using the steering shaft and piston of ball wire bar pair constraint;Damper regulation mechanism changes the damping torque of steering wheel by adjusting throttling passage sectional area;The positive and negative rotation of the traversing gear of mechanical pressure relief mechanism respectively correspond its on the traversing sleeve of gear into move back, final right or left side and left or right pressure release gear side friction engagement drives left or right pressure release rack gear unlatching pressure release passage indirectly;Steering disc assembly of the invention, has the advantages that passive security function, fault-tolerance is strong, realizes system reflection driver and turns to the function of being intended to and be applied to steering wheel form-fit torque.

Description

A kind of steering disc assembly for wire-controlled steering system
Technical field
The invention belongs to wire-controlled steering system technical fields, and in particular to a kind of fault-tolerance is used for by force wire-controlled steering system Turn to disc assembly.
Background technique
With vehicle intellectualized development, the wire control technology of automobile has obtained extensive research.Wire control technology (X-by- Wire it) is derived from the control system of aircraft, traditional component room machine connection is eliminated in the technology, passes through cable or its other party The transmission of formula realization control instruction.The line control system of automobile includes drive-by-wire (Drive-by-Wire), brake-by-wire (Brake-by-Wire), steering-by-wire (Steer-by-Wire) etc..Wherein automobile steer-by-wire system (Steer-By-Wire, Abbreviation SBW) by steering disc assembly, steering execution three major parts of assembly and master controller (ECU) and other auxiliary systems Composition.Turning to disc assembly includes steering wheel, rotary angle transmitter, torque sensor and torque motor.Turn to the main function of disc assembly Can the steering intention of driver is converted into digital signal, and pass to master controller;Receive what master controller was sent simultaneously Torque signals generate steering wheel torque, to be supplied to the corresponding road feel information of driver.Turning to and executing assembly includes front wheel angle The compositions such as sensor, steering actuating motor, steering motor controller and front-wheel steer component.Turning to and executing the function of assembly is to connect The order of main controller controls steered wheel rotation by steering motor controller, realizes that the steering of driver is intended to.Relatively The mechanical connection of steering wheel and track rod is eliminated in traditional steering system, steering-by-wire, steering wheel angle passes through electricity Signal is transmitted to steering actuating motor.Due to eliminating steering drive axle, which effectively optimizes arrangement, avoids front Secondary injury of the steering system to driver when collision;And completely cut off the vibration on tire and chassis, it ensure that the comfortable of driving Property;Furthermore engineer can according to need, and excludes the limitation of mechanical connection, the parameter of steering system turning rate is neatly realized Change, it is easy to realize control stability when steering lightweight and the high speed when guaranteeing vehicle low speed.
In the nineties, major automobile vendor and parts company all have made intensive studies steering-by-wire, AM General Company, German Bayerische Motorne Werke Aktiengeellschaft, Japanese Toyota Company, the companies such as french citroen all develop SBW concept car, attract in car exhibition Extensive concern.Infiniti Q50L steering-by-wire vehicle exposes in Detroit car exhibition in 2013, is that global first item is furnished with The volume production vehicle of steering-by-wire, opens automobile and drives the new era.In addition, Bosch China domain is turned at one of the roadshow of in September, 2018 It is equipped with the line traffic control product for having fully phased out jackshaft on Audi's vehicle, really realizes the parametrization of turning rate, makes to drive and more relax It is suitable.In addition to major automobile vendor, major colleges and universities and research institute also are unfolded to study to SBW, the Balachandran of Stanford University A, Gerdes JC analyze the sensitivity of each factor in road feel model by the method for objective evaluation, and are tested by instruction carriage X1 Demonstrate,prove simulation result.S.Asai and Kaufmann et al. propose based on the electric current for turning to actuating motor the side for calculating road feel torque Method, the electric current of motor and torque are directly proportional, and the torque of motor is related to the aligning torque on road surface, in this way can be the detailed of road surface Thin information is fed back.The country starts late to the research of steering-by-wire, but correlative study in recent years also achieve it is very big into Step." light of spring three " new energy vehicle of Tongji University's research and development, the vehicle expose in the 6th Shanghai International Industry Show, use Wire-controlled steering system, and it is equipped with the Novel power systems such as fuel cell.
Infiniti Q50L steering-by-wire vehicle remains traditional steering column in fact, is connected by clutch with steering wheel, It is usually to disconnect, in thrashing, clutch is combined, so that the stability of system is improved, in this way since spare steering passes The presence of dynamic column, the advantage of steering-by-wire mentioned above fail to give full play of.In addition, Infiniti Q50L steering-by-wire Time more than ten years has been spent to be designed and verify before and after the steering system supplier KYB of vehicle, but unfortunately city is not on it Into year, wire-controlled steering system is just as the rotational angle of steering wheel and wheel has differences and must not measure and call together very much It returns.
The above existing wire-controlled steering system there are the problem of as the thorny problem for restricting steering-by-wire vehicle volume production, therefore It can develop that fault-tolerance is strong, system is stable, really novel wire-controlled steering system becomes development line for economical and road feel Control turns to an important link of the marketization.
Summary of the invention
The present invention is provided a kind of novel for wire-controlled steering system to solve above-mentioned deficiency of the prior art Steering disc assembly, to realize a set of fault-tolerance it is strong, with passive security and economic excellent steering disc assembly, largely slow down Excessive dependence of the wire-controlled steering system for electrical system thoroughly gets rid of the dependence to bulky conventional steering column and has rationally Passive security function, increase the safety of system, reduce the work load of torque motor, have fault-tolerance it is strong, passive security And the advantages of economical.
The present invention is achieved through the following technical solutions:
A kind of fault-tolerance is used for by force the steering disc assembly of wire-controlled steering system, including steering wheel 1, torque and rotary angle transmitter 2, damper module 3 and torque motor module 4;The damper module 3 is for providing the damping of steering wheel 1, and its damping can It is adjusted according to information such as speeds by executing agency, and is unlikely to when high speed steering wheel without road feel;The torque motor module 4 is used In changing steering wheel sense by the throttling passage area on regulating piston, while being responsible for actively returning and just drawing steering wheel in Positive position triggers pressure relief mechanism in the case where active is returned just, slows down the resistance of piston namely mitigates the burden of motor;
The shaft of the steering wheel 1 is coupled with the steering shaft of damper module 3, torque and 2 side of being placed in of rotary angle transmitter To in the shaft of disk 1, torque motor module 4 is located at the lower section of damper module 3, is turned by the rotation of rack-and-pinion adjutant's motor It changes the linear translation of single-side rack 107 into, and then pushes the translation of the two-sided rack 111 by push rod 108, and the two-sided rack 111 The two sides rack gear tune square gear with damper regulation mechanism 110 and mechanical pressure relief mechanism 112 inside damper module 3 respectively 201 and traversing gear 304 engage, it is convenient to adjust the positional relationship of the internal structure of damper module 3.
The damper module 3 is by piston elevating mechanism, damper regulation mechanism 110, mechanical pressure relief mechanism 112 and damper Shell 102 forms;Shell 102 seals entire damper module 3, and it is internal be full of silicone oil, the piston elevating mechanism, Damper regulation mechanism 110, mechanical pressure relief mechanism 112 are respectively positioned within shell 102, and the steering shaft of damper module 3 is The rotation axis of piston elevating mechanism, rotation cause the lifting of the piston 103 of piston elevating mechanism, while damper regulation mechanism 110, mechanical pressure relief mechanism 112 is respectively positioned on the lower surface of piston 103, passes through the tune square gear of damper regulation mechanism 110 respectively 201 and the traversing gear 304 of mechanical pressure relief mechanism 112 engaged with a face rack gear of the two-sided rack 111, therefore, by torque motor The i.e. controllable damper regulation mechanism 110 of the two-sided rack 111 that module 4 drives indirectly and mechanical pressure relief mechanism 112 act.
Wherein, the piston elevating mechanism is assembled by steering shaft 101 and piston 103 by ball wire bar pair, described Shell 102 is isolated into two and half cylinders up and down by piston 103;The steering shaft 101 passes through ball wire bar pair band piston 103 along 102 upward-downward translation of shell, to change the volume of the upper lower half cylinder of the isolation of piston 103, silicone oil flows through piston Throttling passage on 103 brings certain damping force to moving up and down for piston 103, to give steering shaft 101 or steering wheel 1 Certain damping torque is brought, steering wheel road feel is simulated.
The damper regulation mechanism 110 is by pushing bar 108, the two-sided rack 111, adjusting square gear 201, worm tooth wheel shaft 202 With adjust square turbine 104 form, push bar 108 by fastening thread pair and the two-sided rack 111 it is direct-connected, push the axis side of bar 108 To the rack gear draw direction of vertical the two-sided rack 111, the rack gear and tune square gear 201 of 111 one side of the two-sided rack pass through gear pair Engagement adjusts square gear 201 circumferentially fixed further through key and worm tooth wheel shaft 202, and the other end of worm tooth wheel shaft 202 is machined with snail Bar rack gear, worm screw and tune square turbine 104 pass through worm-gears engagement rotation herein;
The machinery pressure relief mechanism 112, is fixed on the lower surface of piston 103, by left pressure release rack gear 301, left pressure release gear 302, the traversing sleeve 303 of gear, traversing gear 304, structure pressure release gear shaft 305, right pressure release rack gear 306 and right pressure release gear 307 Composition, the inner peripheral surface of the traversing gear 304 are engaged with the outer peripheral surface of the traversing sleeve 303 of gear by ball screw assembly, gear The inner peripheral surface of traversing sleeve 303, which is combined by key with pressure release gear shaft 305, to be remained stationary, the left or right side of traversing gear 304 Face is engaged with the right side of left pressure release gear 302 or the left side of right pressure release gear 307 by the pair that rubs, left pressure release rack gear 301 It is engaged by gear pair between left pressure release gear 302, right pressure release rack gear 306 and right pressure release gear 307, mobile left pressure release Rack gear 301 and right pressure release rack gear 306 are the pressure release passage on openable piston 103.
Further, the torque motor module 4 is made of torque motor 105, mounting base 106 and single-side rack 107, The torque motor 105 is mounted on mounting base 106, and the rotational power that torque motor 105 exports is changed into single-side rack 107 Length travel, for changing the steering wheel torque simulated of damper module 3 according to speed, and provide steering wheel 1 actively Positive power is returned, the other end of the single-side rack 107 is connect with bar 108 is pushed, the rack-and-pinion adjutant at single-side rack 107 The linear movement for being converted into push rod 108 of motor.
Further, the shape of the shell 102 is that a rib of top two is crossed compared with Rouno Cormer Pregrinding Wheel, and inside quilt The cuboid emptied, and the axis of 1 shaft of steering wheel is identical as the draw direction of cuboid.
Further, the outer profile of the piston 103 is identical as the section of shell 102, the two clearance fit.
Further, there are two mechanical throttling passages (A and B) and two mechanical pressure release passages for setting on the piston 103 (C and D).Two mechanical throttling passages (A and B) are in arcuation, respectively centered on the axis of steering shaft 101, closer symmetrical cloth It sets in 101 two sides of steering shaft.Two mechanical pressure release passages (C and D) are rectangular, let out respectively by a left side for mechanical pressure relief mechanism 112 Knob item 301 and the covering of right pressure release rack gear 306.
Further, it is provided with thin tabletting on 104 inner ring of tune square turbine, there are two that even circumferential is distributed in thin tabletting A channel M and N.Thin tabletting and the lower surface of piston 103 fit closely, and channel M and N have part intersection with channel A and B respectively, And speed it is lower when intersecting area it is smaller, when speed increases, damper regulation mechanism 110 is acted, drive and square turbine 104 adjusted to rotate, The coincidence relation with fluid course on piston 103 is changed to the thin tabletting, at this time channel M and N respectively with channel A and B Intersecting area increase, to move up and down bring to piston 103 when changing silicone oil and flowing through the throttling passage on piston 103 The effect of damping force, satisfaction " damping, the small damping of middle speed, high speed have damping in low speed ", there is the function for adjusting and damping.
Further, it is equipped with the groove that do not get through on the side of the left pressure release gear 302 and right pressure release gear 307, Tooth there are five being set on outer peripheral surface.
Further, the steering disc assembly further includes two failure conducting valves 6 and outer fluid course 5, and two failures are led Port valve 6 is arranged on mounting base 106, is located at piston 103 and shell 102 is isolated into two and half cylinders up and down Portion, two failure conducting valves 6 are connect with outer fluid course 5, and the valve that failure conducting valve 6 is powered when working normally is in closed state, It ensure that sealed environment for shell 102, if disconnection fault occurs, failure conducting valve 6 is powered off and is connected, if turning at this time Dynamic steering wheel 1, band piston 103 move up, then the silicone oil of upper half cylinder flows through outer fluid course 5 by valve and returns to down again through valve Half cylinder drives mechanical force amplifier work with hydraulic silicone oil in outer fluid course 5, power is acted on track rod, Complete the steering under faulty generation environment.
Compared with prior art, advantages of the present invention is as follows:
1. existing wire-controlled steering system is the integrated complex electromechanical systems of a set of a large amount of electric elements, if power-off or electricity occurs Device failure, entire steering system will paralyse comprehensively;The present invention slows down the dependence for electric appliance, and steering wheel torque is logical under different speeds The silicone oil damping force in different throttling pistons channel is crossed to simulate, if torque motor is gone on strike, steering wheel of the invention still has certain size Damping force sense, and can be completed by the interim steering system of mechanical-hydraulic of arrangement it is easy turn to work, there is stronger appearance Mistake.
2. existing wire-controlled steering system remains traditional steering column in fact, connected, is put down with steering wheel by clutch When be to disconnect, in thrashing, clutch is combined, to improve the stability of system, in this way due to spare steerings transmission The presence of column, the advantage of steering-by-wire fail to give full play to;The present invention completely abolishes steering drive axle, by the machine more conducively arranged The hydraulic interim steering system of tool takes on the passive security steering system of this wire-controlled steering system, have effectively optimization arrangement, Steering system guarantees driver comfort to the secondary injury of driver and the vibration on isolation tire and chassis when avoiding head-on crash The advantages that.
3. the steering wheel torque of existing steering system is provided by torque motor completely, i.e., torque motor needs all the time Work externally acting, dissipate big energy;Torque motor in the present invention only adjusts steering wheel damping force when speed changes Measures of dispersion or steering wheel be provided work when actively returning positive power, slow down the burden of torque motor significantly, economical, The continual mileage of electric vehicle can be improved.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the steering disc assembly of wire-controlled steering system of the invention;
Fig. 2 is the damper module of steering disc assembly of the invention and the structural schematic diagram of torque motor module;
Fig. 3 is the structural schematic diagram of piston elevating mechanism in Fig. 2 illustrated embodiment;
Fig. 4 is the structural schematic diagram of damper regulation mechanism of the invention;
Fig. 5 is the structural schematic diagram of mechanical pressure relief mechanism of the invention;
Fig. 6 is the structural schematic diagram of piston details of the invention;
Fig. 7 is the structural schematic diagram of tune square turbine components of the invention.
Fig. 8 is the structural schematic diagram of the traversing sleeve part of gear of the invention.
Fig. 9 is the structural schematic diagram of pressure release gear part of the invention.
In figure: 1 steering wheel, 2 torques and rotary angle transmitter, 3 damper modules, 4 torque motor modules, 5 outer fluid courses, 6 failure conducting valves;
101 steering shafts, 102 shells, 103 pistons, 104 tune square turbines, 105 torque motors, 106 mounting bases, 107 single-side racks, 108 push rods, 109 sealing-plugs, 110 damper regulation mechanisms, 111 the two-sided racks, 112 mechanical pressure relief mechanisms;
201 adjust square gear, 202 worm tooth wheel shafts;
301 left pressure release rack gears, 302 left pressure release gears, the traversing sleeve of 303 gears, 304 traversing gears, 305 pressure release gears Axis, 306 right pressure release rack gears, 307 right pressure release gears;
Specific embodiment
The present invention is described further with reference to the accompanying drawing.
Embodiment 1
Fig. 1 is a kind of steering disc assembly of wire-controlled steering system that fault-tolerance is strong, by steering wheel 1, torque and rotation angular sensing Device 2, damper module 3, torque motor module 4, failure conducting valve 6 and outer fluid course 5 form, and shell 102 seals Entire damper module 3, and it is internal full of silicone oil, the piston elevating mechanism, damper regulation mechanism 110, mechanical pressure relief mechanism 112 are respectively positioned within shell 102, steering shaft, that is, piston elevating mechanism rotation axis of damper module 3, and rotation is drawn The lifting of the piston 103 of piston elevating mechanism is played, while damper regulation mechanism 110, mechanical pressure relief mechanism 112 are respectively positioned on piston On 103 lower surface, pass through the traversing gear for adjusting square gear 201 and mechanical pressure relief mechanism 112 of damper regulation mechanism 110 respectively 304 engage with a face rack gear of the two-sided rack 111, therefore, the two-sided rack 111 driven indirectly by torque motor module 4 It controls damper regulation mechanism 110 and mechanical pressure relief mechanism 112 acts.The steering wheel 1 and torque and rotary angle transmitter 2 are used for will The steering intention of driver is converted into torque and angular signal, and the torque signals that reaction system calculates, and is driven with being supplied to The corresponding road feel information of member;The damper module 3 is let out by piston elevating mechanism (Fig. 3), damper regulation mechanism (Fig. 4), machinery Press mechanism (Fig. 5) and shell 102 form, for simulating certain damping torque suitable and convenient for adjusting to steering wheel; The torque motor module 4 is made of torque motor 105 and mounting base 106, for changing 3 mould of damper module according to speed The quasi- torque for being applied to steering wheel 1;The failure conducting valve 6 and outer fluid course 5 form back-up steering system, power-off or electricity Adapter tube steering system when device failure, prevents the paralysis of wire-controlled steering system.
The shaft of steering wheel 1 is coupled with the steering shaft of damper module 3, and damper module 3 can be supplied to the side of rotation To the suitable steering wheel torque of disk 1, and torque motor module 4 is by finely tuning damper module 3 come according to speed adjustment direction disk Torque.The present invention considers two kinds of working environments: the environment under fault-free and faulty generation.Firstly, if being sent out without any failure When raw, damper module 3 is the module of a sealing, and 3 steering shaft of damper module being coupled with steering wheel 1 affects corresponding mechanism Movement, this is damped power sense in the process, to give the suitable steering wheel torque of steering wheel 1, it may be assumed that road feel;Torque motor mould The vehicle speed information that block 4 is acquired according to automobile CAN-bus finely tunes the internal structure of damper module 3, to change under different speeds Damper module 3 is supplied to the suitable torque of steering wheel 1, realizes that manipulation when turning to lightweight and high speed when vehicle low speed is steady It is qualitative;Further, since the factors such as tyre angle influence, steering system needs to have active return function, at this time torque with turn Under the feedback regulation of the collected signal of angle transducer 2, torque motor module 4 applies external force in the inside machine of damper module 3 Structure, the steering shaft through damper module 3 affect steering wheel 1 to return to middle positive position, following automobile straight-line travelling.In addition, we System cut-off or component break down etc. abnormal operating condition occur when environment call environment under faulty generation, it is assumed that Torque motor module 4 is gone on strike, and failure conducting valve 6 is opened at the two of fluid course 5 outside 3 connection of damper module, steering wheel rotation 1, the piston 103 to link in 3 internal piston elevating mechanism of damper module oppresses hydraulic oil therein through certain failure conducting valve 6 Outer fluid course 5 is flowed to, the oil of elevated pressures overcomes steering resistence to track rod application by mechanical force amplifier enough Steering force, complete easy to turn to work.
As shown in Fig. 2, steering shaft, that is, steering shaft 101 of damper module 3, normal environment bottombearing damper shell 102 is sealed Hydraulic oil be the higher silicone oil of viscosity.Damper module 3 is by piston elevating mechanism (Fig. 3), damper regulation mechanism 110, machinery Pressure relief mechanism 112 and shell 102 form, for simulating certain damping torque suitable and convenient for adjusting to steering wheel.
As shown in figure 3, piston elevating mechanism (Fig. 3) is assembled by steering shaft 101 and piston 103 by ball wire bar pair At the outer profile of piston 103 is identical as the section of shell 102, and the two has the assembly relation of clearance fit, normal work Under condition, shell 102 seals the biggish silicone oil of viscosity, and is isolated into two and half cylinders up and down by piston 103.Rotation Steering shaft 101 inner wall upward-downward translation of the piston 103 along shell 102 is affected by ball wire bar pair.In Fig. 3 on piston Channel everywhere: A, B, C and D is indicated, wherein A and B is mechanical throttling passage, and C and D are mechanical pressure release passage.Driver turn side When turning to disk, C and the channel D are normally closed, and A and channel B are normally opened.Since normal environment bottombearing damper shell 102 is close Damper cylinder is divided into two and half cylinders, the silicone oil of two and half cylinders up and down and only passes through throttling passage A and B exchange current by envelope, piston 103 It is logical.When driver turn steering wheel 1, cause the upward-downward translation of piston 103, the compressing biggish silicone oil of viscosity flows through throttling passage A is swapped with B, and during this, the upward-downward translation of piston is damped power, generates certain damping on steering wheel 1 indirectly Torque, if rationally designing the structural parameters of cylinder, steering wheel torque caused by this process can react the road feel under a certain speed.
As shown in figure 4, the damper regulation mechanism 110 is by pushing bar 108, the two-sided rack 111, adjusting square gear 201, worm screw Gear shaft 202 and tune square turbine 104 form;It is direct-connected by fastening thread pair and the two-sided rack 111 to push bar 108, pushes bar 108 The vertical the two-sided rack 111 of axis direction rack gear draw direction, the rack gear of 111 one side of the two-sided rack and adjust square gear 201 logical Gear pair engagement is crossed, adjusts square gear 201 circumferentially fixed further through key and worm tooth wheel shaft 202, the other end of worm tooth wheel shaft 202 It is machined with worm rack, worm screw and tune square turbine 104 pass through worm-gears engagement rotation herein;As shown in fig. 7, adjusting square turbine There is very thin tabletting on the inner shaft circumferential surface of 104 parts, two channels M and N for thering is even circumferential to be distributed in tabletting.Tabletting and piston 103 lower surface fits closely, and channel M and N have a part intersection with channel A and B respectively, rotation adjust square turbine 104 then channel M with The intersecting area of N and channel A and B change.Steering lightweight when being provided simultaneously with vehicle low speed in view of steering system and Control stability when high speed, therefore as the raising of speed, the damping torque of steering wheel are gradually reduced, finally maintain a certain value It is constant.Assuming that speed be zero pivot stud when, the area minimum that channel M and N and channel A and B intersects, damper module at this time 3 are supplied to the damping torque maximum of steering wheel 3;When speed is not zero, torque motor 105 is according to vehicle speed information and included position Sensor signal is set, single-side rack 107 is successively affected, push rod 108, the two-sided rack 111, adjusts square gear 201, due to adjusting square gear 201 is circumferentially fixed by key with worm tooth wheel shaft 202, and power, which continues through worm tooth wheel shaft 202 and passes to, passes through worm screw snail with it The tune square turbine 104 of wheel set constraint adjusts the rotation of the micro- angle of square turbine 104, and the intersecting area of channel M and N and channel A and B is caused to become Greatly, 1 damping torque of steering wheel is eventually led to become smaller.
As shown in figure 5, it is described machinery pressure relief mechanism 112, be fixed on the lower surface of piston 103, by left pressure release rack gear 301, The traversing sleeve 303 of left pressure release gear 302, gear, traversing gear 304, structure pressure release gear shaft 305, right pressure release rack gear 306 and the right side are let out Knob wheel 307 forms, and the inner peripheral surface of the traversing gear 304 and the outer peripheral surface of the traversing sleeve 303 of gear pass through ball screw assembly, The inner peripheral surface of engagement, the traversing sleeve 303 of gear is combined by key with pressure release gear shaft 305, the left or right side of traversing gear 304 Engage with the right side of left pressure release gear 302 or the left side of right pressure release gear 307 by the pair that rubs, left pressure release rack gear 301 and Left pressure release gear 302, right pressure release rack gear 306 are engaged by gear pair with right pressure release gear 307.Therefore, a left side is driven to let out indirectly Knob item 301 or right pressure release rack gear 306 overcome respective spring pressure and generate displacement, open left pressure release rack gear 301 or the right side is let out The pressure release passage that knob item 306 seals.
The friction factor of the side of left pressure release gear 302, right pressure release gear 307 and traversing gear 304 is all higher, left pressure release Gear 302, the part axonometric drawing of right pressure release gear 307 are identical, as shown in figure 9, having the groove that do not get through on side, on outer peripheral surface Only five teeth of partial region.As shown in fig. 6, being used to support to have at two on the pillar of pressure release gear shaft 305 on piston 103 and being in Columned protrusion I and J.Left pressure release gear 302 is in addition to being coaxially mounted on pressure release gear shaft 305, the groove of side It is coupled with the J point cylindrical protrusion in Fig. 6, and groove admits J point protrusion namely left pressure release gear 302 not completely completely It is circumferentially fixed, certain angular displacement can be moved in the circumferential direction, is held onto later by J point protrusion;Similarly, right pressure release gear 307 The groove of side is coupled with the I point cylindrical protrusion in Fig. 6, and right pressure release gear 307 can move in the circumferential direction certain angular displacement, It is held onto later by I point protrusion.When pressure release gear 302 deviates traversing gear 304 to the left, the left side of traversing gear 304 is pressed to The right side of left pressure release gear 302, the two, if traversing gear 304 continues to rotate, drive left pressure release tooth by friction engagement one Small rotation occurs for wheel 302;If pressure release gear 307 deviates traversing gear 304 to the right, the right side of traversing gear 304 presses to the right side The left side of pressure release gear 307, the two drive right pressure release gear 307 that the rotation of low-angle occurs by friction engagement one.
Groove on the side of the left pressure release gear 302 and right pressure release gear 307 limits left pressure release gear 302 and the right side is let out The rotational angle of knob wheel 307, torque motor pull double sided gear, and the positive process of actively returning of initiation has several successive work: Return damper regulation mechanism, opens mechanical pressure relief mechanism, finally pulls piston mobile.And if torque motor pulls always at this time, Mechanical pressure relief mechanism turn-on overshoot can damage the parts such as some springs by pressure, so the salient point I and J on piston limit shifting in blind slot It is dynamic, after left pressure release gear 302 and right pressure release gear 307 turn an angle, stop operating, gear and piston are seen integrally, It is translatable driven by the motor.
Left pressure release gear 302 and the tooth on right pressure release gear 307 respectively with left pressure release rack gear 301 and right pressure release rack gear 306 Engagement, left pressure release rack gear 301 and right pressure release rack gear 306 can slide in the corresponding sliding rail on piston 103 respectively again, overcome respectively From the pressure of spring, then superlastic spring compression direction movement can be separately turned on mechanical pressure release passage C and D.When " left pressure release gear 302 or right pressure release gear 307 occur low-angle rotation when, they can also affect left pressure release rack gear 301 or right pressure release rack gear 306 Overcome respective spring pressure, opens mechanical pressure release passage C or D.
The torque motor module 4 is made of torque motor 105, mounting base 106 and single-side rack 107, the torque Motor 105 is mounted on mounting base 106, and the rotational power that torque motor 105 exports is changed into longitudinal position of single-side rack 107 It moves, the steering wheel torque for being simulated according to speed change damper module 3, and steering wheel 1 is provided and actively returns positive move Power, the other end of the single-side rack 107 are connect with bar 108 is pushed, and rack-and-pinion adjutant's motor at single-side rack 107 turns Turn changes the linear movement of push rod 108 into.
After steering wheel 1 returns just, i.e., when automobile is kept straight on, piston 103 is in the middle position of shell 102;Driver When turning steering wheel 1 clockwise, piston 103 is moved down along 102 inner wall of shell, when driver turns steering wheel 1 counterclockwise, piston 103 move up;When steering wheel 1 actively returns timing, i.e. piston 103 needs to return the middle position of cylinder, power in half cylinder position of up or down Torque motor 105 is rotated continuously along certain direction, and the work successively completed has: by the throttling in damper regulation mechanism 110 on piston 103 Channel return to primitive age position, somewhere pressure release passage, the pulling piston 103 opened on piston 103 by mechanism pressure relief mechanism 112 return Return the middle position of damping cylinder.
Embodiment 2
A kind of steering disc assembly for the wire-controlled steering system that fault-tolerance is strong further includes failure conducting valve 6 and outer fluid course 5;Two failure conducting valves 6 are arranged on mounting base 106, are located at piston 103 and are isolated into shell 102 up and down Two and half cylinder interiors, two failure conducting valves 6 are connect with outer fluid course 5;
When normal operation in normal, shell 102 is sealed, i.e., failure conducting valve 6 is all closed, and the biggish silicone oil of viscosity is protected It holds in damper, and increases and decreases between upper and lower two and half cylinder by the throttling passage on piston 103.And when steering system powers off Or component failure, when wire-controlled steering system faces the risk of paralysis, the damper regulation mechanism (Fig. 4) of the regulation of torque motor 105 Failure adjusts the tabletting of square turbine 104 to return the throttling passage on piston 103 at sectional area minimum, and failure conducting valve 6 at this time It is switched on, it is assumed that steering shaft 101 is moved up with piston 103, and the silicone oil of compressing upper half cylinder flows out to outer liquid stream through failure conducting valve 6 Channel 5 is returned to the lower half cylinder of damper most afterwards through failure conducting valve 6, while higher hydraulic passing through mechanical-hydraulic power increasing machine Structure is converted to the biggish steering force acted on track rod, realizes that the mechanical-hydraulic under failure turns to, has passive peace Global function.

Claims (7)

1. a kind of steering disc assembly for wire-controlled steering system, which is characterized in that passed including steering wheel (1), torque and corner Sensor (2), damper module (3) and torque motor module (4);
Wherein, the damper module (3) is by piston elevating mechanism, damper regulation mechanism (110), mechanical pressure relief mechanism (112) And shell (102) composition;Shell (102) seals entire damper module (3), and internal full of silicone oil, institute Piston elevating mechanism, damper regulation mechanism (110), machinery pressure relief mechanism (112) is stated to be respectively positioned within shell (102), The rotation of the steering shaft (101) of damper module (3) causes the lifting of the piston (103) of piston elevating mechanism, damps adjusting machine Structure (110), mechanical pressure relief mechanism (112) are respectively positioned on the lower surface of piston (103);
The piston elevating mechanism is assembled by steering shaft (101) and piston (103) by ball wire bar pair, the piston (103) shell (102) is isolated into two and half cylinders up and down;The steering shaft (101) is driven by ball wire bar pair and is lived (103) are filled in along shell (102) upward-downward translation;
The damper regulation mechanism (110) is by pushing bar (108), the two-sided rack (111), adjusting square gear (201), worm tooth wheel shaft (202) with adjust square turbine (104) composition, push bar (108) by fastening thread pair and the two-sided rack (111) it is direct-connected, push bar (108) the rack gear draw direction of the vertical the two-sided rack of axis direction (111), the rack gear and tune square of the two-sided rack (111) one side Gear (201) is engaged by gear pair, adjusts square gear (201) circumferentially fixed further through key and worm tooth wheel shaft (202), worm tooth The other end of wheel shaft (202) is machined with worm rack, and the worm screw, which is engaged with tune square turbine (104) by worm-gears, to be turned It is dynamic;
The machinery pressure relief mechanism (112), is fixed on the lower surface of piston (103), by left pressure release rack gear (301), left pressure release tooth Take turns (302), the traversing sleeve of gear (303), traversing gear (304), structure pressure release gear shaft (305), right pressure release rack gear (306) and the right side Pressure release gear (307) composition, the inner peripheral surface of the traversing gear (304) and the outer peripheral surface of the traversing sleeve of gear (303) pass through rolling The engagement of ballscrew pair, the inner peripheral surface of the traversing sleeve of gear (303), which is combined by key with pressure release gear shaft (305), to be remained stationary, The left side of the right side or right pressure release gear (307) of the left or right side of traversing gear (304) and left pressure release gear (302) is logical Cross the secondary engagement of friction, left pressure release rack gear (301) and left pressure release gear (302), right pressure release rack gear (306) and right pressure release gear (307) it is engaged by gear pair between;
The shaft of the steering wheel (1) is coupled with the steering shaft (101) of damper module (3), and torque and rotary angle transmitter (2) are pacified It is placed in the shaft of steering wheel (1), torque motor module (4) is located at the lower section of damper module (3), passes through rack-and-pinion adjutant The linear translation of single-side rack (107) in the rotation converting to force torque motor module (4) of motor, and then pass through push rod (108) The translation of promotion the two-sided rack (111), and the resistance with damper module (3) inside respectively of the two sides rack gear of the two-sided rack (111) The tune square gear (201) and traversing gear (304) engagement of Buddhist nun's regulating mechanism (110) and mechanical pressure relief mechanism (112).
2. a kind of steering disc assembly for wire-controlled steering system as described in claim 1, which is characterized in that the torque electricity Machine module (4) is made of torque motor (105), mounting base (106) and single-side rack (107), torque motor (105) peace On mounting base (106), the rotational power of torque motor (105) output is changed into the length travel of single-side rack (107), Steering wheel torque for being simulated according to speed change damper module (3), and steering wheel (1) is provided and actively returns positive move Power, the other end of the single-side rack (107) are connect with bar (108) is pushed, rack-and-pinion adjutant's electricity at single-side rack (107) The rotation of machine is converted into the linear movement of push rod (108).
3. a kind of steering disc assembly for wire-controlled steering system as described in claim 1, which is characterized in that the piston (103) outer profile is identical as the section of shell (102), the two clearance fit.
4. a kind of steering disc assembly for wire-controlled steering system as described in claim 1, which is characterized in that the piston (103) there are two mechanical throttling passages and two mechanical pressure release passages for setting on;Two mechanical throttling passages are in arcuation, respectively with Centered on the axis of steering shaft (101), it is arranged symmetrically in steering shaft (101) two sides;Two mechanical pressure release passages are rectangular, point It is not covered by the left pressure release rack gear (301) of mechanical pressure relief mechanism (112) and right pressure release rack gear (306).
5. a kind of steering disc assembly for wire-controlled steering system as described in claim 1, which is characterized in that the tune square whirlpool It is provided with thin tabletting on wheel (104) inner ring, two channels M and N for thering is even circumferential to be distributed in thin tabletting.Tabletting and piston (103) lower surface fits closely, and channel M and N have part intersection with two mechanical throttling passages on piston (103) respectively.
6. a kind of steering disc assembly for wire-controlled steering system as described in claim 1, which is characterized in that the left pressure release It is equipped with the groove that do not get through on the side of gear (302) and right pressure release gear (307), is set on outer peripheral surface there are five tooth.
7. a kind of steering disc assembly for wire-controlled steering system as described in claim 1, which is characterized in that the steering wheel Assembly further includes two failure conducting valves (6) and outer fluid course (5), and two failure conducting valves (6) are arranged in mounting base (106) on, piston (103) is located at by shell (102) and is isolated into two and half cylinder interiors up and down, two failure conductings Valve (6) is connect with outer fluid course (5), and the valve that failure conducting valve (6) is powered when working normally is outside damper in closed state Shell (102) ensure that sealed environment, if disconnection fault occurs, failure conducting valve (6) is powered off and is connected, if rotation direction at this time Disk (1), band piston (103) move up, then the silicone oil of upper half cylinder flows through outer fluid course (5) by valve and returns to down again through valve Half cylinder drives mechanical force amplifier work with hydraulic silicone oil in outer fluid course (5), power is acted on track rod On, complete the faulty steering occurred under environment.
CN201811356442.4A 2018-11-15 2018-11-15 Steering wheel assembly for steer-by-wire system Active CN109334755B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109850004A (en) * 2019-03-25 2019-06-07 武汉科技大学 Steering-by-wire motor turning disk control method and system with power saving function
CN110064194A (en) * 2019-04-30 2019-07-30 牡丹江师范学院 A kind of VR interactive device of adapted to individual computer

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Publication number Priority date Publication date Assignee Title
US20050172620A1 (en) * 2002-05-14 2005-08-11 Michael Zimpfer Hydraulic system comprising pressure-controlled damping means
CN104029721A (en) * 2014-01-23 2014-09-10 广西柳工机械股份有限公司 Hydraulic steering device for loader
CN206171555U (en) * 2016-10-26 2017-05-17 滁州市康达叉车零部件制造有限公司 Damping formula industry vehicle turns to device
CN107458456A (en) * 2017-06-23 2017-12-12 江苏大学 A kind of wire-controlled steering system for being used to container based on hydraulic type

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050172620A1 (en) * 2002-05-14 2005-08-11 Michael Zimpfer Hydraulic system comprising pressure-controlled damping means
CN104029721A (en) * 2014-01-23 2014-09-10 广西柳工机械股份有限公司 Hydraulic steering device for loader
CN206171555U (en) * 2016-10-26 2017-05-17 滁州市康达叉车零部件制造有限公司 Damping formula industry vehicle turns to device
CN107458456A (en) * 2017-06-23 2017-12-12 江苏大学 A kind of wire-controlled steering system for being used to container based on hydraulic type

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109850004A (en) * 2019-03-25 2019-06-07 武汉科技大学 Steering-by-wire motor turning disk control method and system with power saving function
CN109850004B (en) * 2019-03-25 2021-08-17 武汉科技大学 Control method and system for steer-by-wire automobile steering wheel with energy-saving function
CN110064194A (en) * 2019-04-30 2019-07-30 牡丹江师范学院 A kind of VR interactive device of adapted to individual computer

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