CN103693101A - Vehicle variable-speed hydraulic steering gear - Google Patents
Vehicle variable-speed hydraulic steering gear Download PDFInfo
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- CN103693101A CN103693101A CN201310711674.8A CN201310711674A CN103693101A CN 103693101 A CN103693101 A CN 103693101A CN 201310711674 A CN201310711674 A CN 201310711674A CN 103693101 A CN103693101 A CN 103693101A
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- gear
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- finger
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- spline housing
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Abstract
The invention discloses a vehicle variable-speed hydraulic steering gear. A speed variator is embedded between a rotating valve and a metering motor and has two speed ratios of inside engaged gear decelerating drive and direct drive, a valve sleeve of the rotating valve and a motor rotor rotate at a constant speed in direct drive, the valve sleeve of the rotating valve moves in a decelerated relative to the motor rotor when inside engaged gears are in decelerating drive, and accordingly, the flow of the metering motor can be increased according to the speed ratios under the condition of the same corner of a steering wheel. The vehicle variable-speed hydraulic steering gear is simple in structure and low in cost and meets the requirements of vehicles for various steering speed ratios, and steering control performance is improved.
Description
Technical field
The present invention relates to engineering truck all hydraulic pressure steering-gear field, relate in particular to a kind of vehicle speed variation hydraulic steering gear.
Background technology
Be illustrated in figure 1 typical engineering truck hydrostatic steering system, mainly by following elements, formed: oil pump 1, hydraulic steering gear 2, bearing circle transmission shaft 3, bearing circle 4, steering cylinder 5, safety valve 6, check valve 7, fuel tank 8.
Be illustrated in figure 2 the basic structure of hydraulic steering gear 2, comprise rotary valve 101, measure motor 102, universal driving shaft 15, dividing plate 16; Wherein rotary valve 101 is mainly comprised of valve body 11, spool 12, valve pocket 13, finger 14, measure motor 102 is mainly comprised of rotor 18, stator 19, rotor 18 endoporus have tooth, connect with universal driving shaft 15 one end, finger 14 connects with the other end of universal driving shaft 15, finger 14 coordinates with valve pocket 13, has certain rotational displacement amount between finger 14 and spool 12, after spool 12 turns certain angle, just links with finger 14 combinations.
Principle of work is: during Vehicular turn, steering wheel rotation 4 rotation θ angles, by bearing circle transmission shaft 3, drive spool 12 to rotate, open the valve port between spool 12 and valve pocket 13, the oil of oil pump 1 enters measure motor 102 drive rotor 18 rotary rowed oil pump capacity q by rotary valve 101, rotor 18 drives universal driving shaft 15 by the internal spline of self simultaneously, finger 14, valve pocket 13 is at equidirectional rotation θ corner, valve port between spool 12 and valve pocket 13 is got back to closed condition, the oil mass q and the steering wheel angle θ that discharge are proportional, the oil mass q discharging promotes steering cylinder 5 makes vehicle produce deflection angle α.In steering procedure, the corner displacement θ of bearing circle 4 and the steering angular displacement α of vehicle are proportional, that is to say, the transmitting ratio of Vehicular turn (ratio of steering wheel angle and steered wheel corner) is substantially constant.
But for some vehicle, loader for example, the chevron pointing mode of operation that adopt during operation more, shovel dress material and discharging need once and again quick steering operation, therefore wish less steering gear ratio, only need the corner that steering wheel rotation is less to obtain larger machine deflection angle, be conducive to reduce tired driver, improve operating efficiency.While running at high speed on Er highway, wish again larger steering gear ratio, make vehicle have good steering stability.Turning to of loader only has a transmitting ratio at present, can not meet two kinds of demands, be generally ± 2.5～3 circles of steering wheel angle scope, and steer ability during operation is poor, and driver's labour intensity is large.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, a kind of vehicle speed variation hydraulic steering gear is provided; With speed change, turn to type of drive to solve the handling maneuver performance that vehicle has had under different service conditions, have simple in structure, cost is low, improved steer ability.
The present invention is achieved through the following technical solutions:
A vehicle speed variation hydraulic steering gear, has comprised rotary valve 101, measure motor 102, universal driving shaft 15, dividing plate 16; Described rotary valve 101 comprises valve body 11, spool 12, valve pocket 13, finger 14, in the circuferential spacing of valve pocket 13 between spool 12 and valve body 11, finger 14 and valve pocket 13 connect for pin, between finger 14 and spool 12, be mutually rotationally connected (between them, thering is certain rotational displacement amount), when spool 12 rotates with finger 14 in conjunction with linking;
Described measure motor 102 comprises rotor 17, stator 18, and rotor 17 is in the interior rotation of stator 18 and revolution, and the endoporus of rotor 17 has tooth;
There is tooth one end of described universal driving shaft 15, has the tooth of this end of tooth and rotor 17 endoporus of measure motor 102 to connect formation splined;
Described dividing plate 16 is between rotary valve 101 and measure motor 102;
Described vehicle speed variation hydraulic steering gear also comprises a change-speed box 103, and described change-speed box 103 comprises input shaft 27, output shaft 20, coupler 28; Change-speed box 103 is between rotary valve 101 and dividing plate 16, and the input shaft 27 of change-speed box 103 connects with the other end of universal driving shaft 15 by coupler 28, and the output shaft 20 of change-speed box 103 connects with the finger 14 of rotary valve 101; Described coupler 28 is gimbal coupling;
Described change-speed box 103 also comprises spline housing 21, housing 22, shifting gear 23, engaging sleeve 24, internally toothed annulus 25, bolster 26, sun wheel 29, transition gear 30, gearshift internal tooth casing 31, shift fork 32, handle supporting 33, handle 34;
The inner of described output shaft 20 and spline housing 21 engagements, outer end connects with the finger 14 of rotary valve 101;
Described spline housing 21 is enclosed within on output shaft 20 and passes through splined, on output shaft 20, moves vertically, and one end cylindrical of described spline housing 21 is provided with groove, and this groove coordinates with shift fork 32, and other end cylindrical and the shifting gear 23 of spline housing 21 are consolidated;
Described bolster 26 is fixed on change-speed box 103 housings 22, and transition gear 30 is contained on bolster 26;
Described input shaft 27 1 sides connect with sun wheel 29, and opposite side connects with coupler 28;
Described sun wheel 29 and engaging sleeve 24 is fixed is integrated, sun wheel 29 and transition gear 30 engagements, the engaging sleeve 24 of sun wheel 29 1 sides can with shifting gear 23 engage a gears engagements;
Described handle supporting 33 is fixed on housing 22, and handle supporting 33 is porose;
Groove and shift fork 32 matching relationships on described spline housing 21 cylindricals are, described shift fork 32 one end have arc fork to embed in the groove of spline housing 21 one end, and the other end is that cylindrical shroud is enclosed within on the axle of handle 34 one end.
Described handle 34 is arranged in the hole of handle supporting 33 in the mode of rotating, and connects by axis hole with shift fork 32.
With respect to prior art, tool of the present invention has the following advantages and beneficial effect:
(1) between rotary valve and measure motor, embed a change-speed box, this change-speed box is internal gear deceleration transmission and two kinds of speed ratios of direct-drive, during direct-drive, the valve pocket of rotary valve and motor rotor constant speed are rotated, when internal gear deceleration transmission, the valve pocket of rotary valve is realized decelerated movement with respect to motor rotor, thereby measure motor can be realized flow and increases by speed ratio in identical steering wheel angle situation.This is simple in structure, and cost is low, adapts to the multiple steering reduction ratio requirement of vehicle, improves handling maneuver performance.
(2) many transmitting ratios handling maneuver is selected, applicable different job requirements.
(3) because change-speed box is by fluid motor-driven, therefore on the handling maneuver power of bearing circle without impact.
Accompanying drawing explanation
Fig. 1 is all hydraulic pressure steering-gear schematic diagram.
Fig. 2 is existing hydraulic steering gear structural representation.
Fig. 3 is vehicle speed variation hydraulic steering gear structural representation of the present invention.
The specific embodiment
Below in conjunction with specific embodiment, the present invention is more specifically described in detail.
Embodiment
As shown in Figure 3.Vehicle speed variation hydraulic steering gear of the present invention, has comprised rotary valve 101, measure motor 102, universal driving shaft 15, dividing plate 16;
Described rotary valve 101 comprises valve body 11, spool 12, valve pocket 13, finger 14, in the circuferential spacing of valve pocket 13 between spool 12 and valve body 11, finger 14 and valve pocket 13 connect for pin, between finger 14 and spool 12, be mutually rotationally connected (between them, thering is certain rotational displacement amount), when spool 12 rotates with finger 14 in conjunction with linking;
Described measure motor 102 comprises rotor 17, stator 18, and rotor 17 is in the interior rotation of stator 18 and revolution, and the endoporus of rotor 17 has tooth;
There is tooth one end of described universal driving shaft 15, has the tooth of this end of tooth and rotor 17 endoporus of measure motor 102 to connect formation splined;
Described dividing plate 16 is between rotary valve 101 and measure motor 102;
Described vehicle speed variation hydraulic steering gear also comprises a change-speed box 103, and described change-speed box 103 comprises input shaft 27, output shaft 20, coupler 28; Change-speed box 103 is between rotary valve 101 and dividing plate 16, and the input shaft 27 of change-speed box 103 connects with the other end of universal driving shaft 15 by coupler 28, and the output shaft 20 of change-speed box 103 connects with the finger 14 of rotary valve 101;
Described change-speed box 103 also comprises spline housing 21, housing 22, shifting gear 23, engaging sleeve 24, internally toothed annulus 25, bolster 26, sun wheel 29, transition gear 30, gearshift internal tooth casing 31, shift fork 32, handle supporting 33, handle 34;
The inner of described output shaft 20 and spline housing 21 engagements, outer end connects with the finger 14 of rotary valve 101;
Described spline housing 21 is enclosed within on output shaft 20 and passes through splined, on output shaft 20, moves vertically, and one end cylindrical of described spline housing 21 is provided with groove, and this groove coordinates with shift fork 32, and other end cylindrical and the shifting gear 23 of spline housing 21 are consolidated;
Described bolster 26 is fixed on change-speed box 103 housings 22, and transition gear 30 is contained on bolster 26;
Described input shaft 27 1 sides connect with sun wheel 29, and opposite side connects with coupler 28;
Described sun wheel 29 and engaging sleeve 24 is fixed is integrated, sun wheel 29 and transition gear 30 engagements, the engaging sleeve 24 of sun wheel 29 1 sides can with shifting gear 23 engage a gears engagements;
Described handle supporting 33 is fixed on housing 22, and handle supporting 33 is porose;
Groove and shift fork 32 matching relationships on described spline housing 21 cylindricals are, described shift fork 32 one end have arc fork to embed in the groove of spline housing 21 one end, and the other end is that cylindrical shroud is enclosed within on the axle of handle 34 one end.
Described handle 34 is arranged in the hole of handle supporting 33 in the mode of rotating, and connects by axis hole with shift fork 32.
Described coupler 28 is gimbal coupling.
Principle of work of the present invention is as follows:
As shown in Figure 3 (in conjunction with Fig. 1, 2), when low speed turns to than (ratio at finger direction dish corner and Vehicular turn angle), twisting handle 34, by shift fork 32, stirring spline housing 21 and shifting gear 23 moves axially and makes shifting gear 23 and 31 engagements of gearshift internal tooth casing, steering wheel rotation 4 turns θ angle, by bearing circle transmission shaft 3, drive the spool 12 of rotary valve 101 to rotate, between spool 12 and valve pocket 13, produce relative angular displacement, valve port is opened, the valve port of having opened between the spool 12 of oil pump 1 fuel feeding by rotary valve 101 and valve pocket 13 enters measure motor 102, drive rotor 17 rotates, the oil that measure motor 102 is discharged enters again the valve port that rotary valve 101 opened between spool 12 and valve pocket 13 and enters steering cylinder 5 driving Vehicular turns, the oil in steering cylinder 5 another chambeies is got back to fuel tank 8 through rotary valve 101, rotor 17 time rotationals of measure motor 102 are by universal driving shaft 15, coupler 28 drives input shaft 27 and sun wheel 29 rotations of change-speed box 103, sun wheel 29 and transition gear 30 engagements, transition gear 30 meshes with internally toothed annulus 25 again, thereby internally toothed annulus 25 is realized decelerated movement, by shifting gear 23 driver output axles 20, finger 14, valve pocket 13 is realized slowing down and is rotated, until also rotating θ, valve pocket 13 makes valve port sealing, in this course, ratio=the sun wheel 29 of the angular transposition of the angular transposition of bearing circle 4 and rotor 17 and the ratio of the number of teeth of internally toothed annulus 25, if this ratio is λ, : compare with existing hydraulic steering gear, rotate in same steering wheel angle situation, the flow of measure motor 102 outputs has increased λ doubly.
When turning to than (ratio at finger direction dish corner and Vehicular turn angle) at a high speed, twisting handle 34, by shift fork 32, stirring spline housing 21 and shifting gear 23 moves axially and makes shifting gear 23 and engaging sleeve 24 engagements, steering wheel rotation 4 turns θ angle, by bearing circle transmission shaft 3, drive the spool 12 of rotary valve 101 to rotate, between spool 12 and valve pocket 13, produce relative angular displacement, valve port is opened, the valve port of having opened between the spool 12 of oil pump 1 fuel feeding by rotary valve 101 and valve pocket 13 enters measure motor 102, drive rotor 17 rotates, the oil that measure motor 102 is discharged enters again the valve port that rotary valve 101 opened between spool 12 and valve pocket 13 and enters steering cylinder 5 driving Vehicular turns, the oil in steering cylinder 5 another chambeies is got back to fuel tank 8 through rotary valve 101, rotor 17 time rotationals of measure motor 102 are by universal driving shaft 15, coupler 28 drives input shaft 27 and sun wheel 29 rotations of change-speed box 103, sun wheel 29 drives engaging sleeve 24, output shaft 20, finger 14, valve pocket 13 rotates, until rotating θ, valve pocket 13 makes valve port sealing, in this course, the angular transposition of bearing circle 4 is identical with the angular transposition of rotor 17, identical with existing hydraulic steering gear.
Just realized as mentioned above the fluid-link steering function of two kinds of speed, simultaneously because variable speed drive (VSD) is by fluid motor-driven, so handling maneuver power is not affected.
Above-described embodiment is preferably embodiment of the present invention; but embodiments of the present invention are not limited by the examples; other are any does not deviate from change, the modification done under Spirit Essence of the present invention and principle, substitute, combination, simplify; all should be equivalent substitute mode, within being included in protection scope of the present invention.
Claims (5)
1. a vehicle speed variation hydraulic steering gear, has comprised rotary valve, measure motor, universal driving shaft, dividing plate;
Described rotary valve comprises valve body, spool, valve pocket, finger, and in the circuferential spacing of valve pocket between spool and valve body, finger is that pin connects with valve pocket, between finger and spool, is mutually rotationally connected, and is combined interlock when valve core rotation with finger;
Described measure motor comprises rotor, stator, and rotor is rotation and revolution in stator, and the endoporus of rotor has tooth;
There is tooth one end of described universal driving shaft, has this end of tooth and the tooth of the rotor inner hole of measure motor to connect and forms splined;
Described dividing plate is between rotary valve and measure motor;
It is characterized in that:
Described vehicle speed variation hydraulic steering gear also comprises a change-speed box, and described change-speed box comprises input shaft, output shaft, coupler; Change-speed box is between rotary valve and dividing plate, and the input shaft of change-speed box connects with the other end of universal driving shaft by coupler, and the output shaft of change-speed box connects with the finger of rotary valve.
2. vehicle speed variation hydraulic steering gear according to claim 1, is characterized in that: described change-speed box also comprises spline housing, housing, shifting gear, engaging sleeve, internally toothed annulus, bolster, sun wheel, transition gear, gearshift internal tooth casing, shift fork, handle supporting, handle;
The inner of described output shaft and spline housing engagement, outer end connects with the finger of rotary valve;
Described spline housing is enclosed within on output shaft and passes through splined, on output shaft, moves vertically, and one end cylindrical of described spline housing is provided with groove, and this groove coordinates with shift fork, and other end cylindrical and the shifting gear of spline housing are consolidated;
Internal tooth casing is fixed is integrated for described internally toothed annulus and gearshift, internally toothed annulus and transition gear engagement, and the gearshift internal tooth casing of opposite side and the external tooth engage a gear of shifting gear mesh;
Described bolster is fixed on case of transmission, and transition gear is contained on bolster;
Described input shaft one side connects with sun wheel, and opposite side connects with coupler;
Described sun wheel and engaging sleeve are fixed to be integrated, sun wheel and transition gear engagement, and the engaging sleeve of sun wheel one side can mesh with shifting gear engage a gear;
Described handle supporting is fixed on housing, and handle supporting is porose.
3. vehicle speed variation hydraulic steering gear according to claim 2, it is characterized in that: groove and shift fork matching relationship on described spline housing cylindrical are, described shift fork one end has arc fork to embed in the groove of spline housing one end, and the other end is that cylindrical shroud is enclosed within on the axle of handle one end.
4. vehicle speed variation hydraulic steering gear according to claim 2, is characterized in that: described handle is arranged in the hole of handle supporting in the mode of rotating, and connects by axis hole with shift fork.
5. vehicle speed variation hydraulic steering gear according to claim 2, is characterized in that: described coupler is gimbal coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310711674.8A CN103693101B (en) | 2013-12-20 | 2013-12-20 | A kind of vehicle speed variation hydraulic steering gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310711674.8A CN103693101B (en) | 2013-12-20 | 2013-12-20 | A kind of vehicle speed variation hydraulic steering gear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103693101A true CN103693101A (en) | 2014-04-02 |
| CN103693101B CN103693101B (en) | 2016-04-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310711674.8A Expired - Fee Related CN103693101B (en) | 2013-12-20 | 2013-12-20 | A kind of vehicle speed variation hydraulic steering gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103693101B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105405348A (en) * | 2015-12-11 | 2016-03-16 | 广东交通职业技术学院 | Full-hydraulic servo steering system teaching stand |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3339660A (en) * | 1964-09-14 | 1967-09-05 | Budzich Tadeusz | Hydrostatic mechanism |
| US4140199A (en) * | 1974-10-05 | 1979-02-20 | Coles Cranes Limited | Mobile crane |
| CN1824562A (en) * | 2006-03-27 | 2006-08-30 | 镇江液压件厂有限责任公司 | Geluote energy saving high efficiency hydraulic deflector |
| CN2913122Y (en) * | 2006-05-08 | 2007-06-20 | 宁波中意液压马达有限公司 | Combined valve type cycloidal hydraulic steering gear |
| CN203637935U (en) * | 2013-12-20 | 2014-06-11 | 华南理工大学 | Speed-changing hydraulic steering gear for vehicle |
-
2013
- 2013-12-20 CN CN201310711674.8A patent/CN103693101B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3339660A (en) * | 1964-09-14 | 1967-09-05 | Budzich Tadeusz | Hydrostatic mechanism |
| US4140199A (en) * | 1974-10-05 | 1979-02-20 | Coles Cranes Limited | Mobile crane |
| CN1824562A (en) * | 2006-03-27 | 2006-08-30 | 镇江液压件厂有限责任公司 | Geluote energy saving high efficiency hydraulic deflector |
| CN2913122Y (en) * | 2006-05-08 | 2007-06-20 | 宁波中意液压马达有限公司 | Combined valve type cycloidal hydraulic steering gear |
| CN203637935U (en) * | 2013-12-20 | 2014-06-11 | 华南理工大学 | Speed-changing hydraulic steering gear for vehicle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105405348A (en) * | 2015-12-11 | 2016-03-16 | 广东交通职业技术学院 | Full-hydraulic servo steering system teaching stand |
| CN105405348B (en) * | 2015-12-11 | 2018-05-15 | 广东交通职业技术学院 | A kind of fully hydraulic servo steering teaching bench |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103693101B (en) | 2016-04-13 |
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Granted publication date: 20160413 Termination date: 20211220 |