CN104590367A - Rear axle steering mechanism of puddle jumper - Google Patents
Rear axle steering mechanism of puddle jumper Download PDFInfo
- Publication number
- CN104590367A CN104590367A CN201410836773.3A CN201410836773A CN104590367A CN 104590367 A CN104590367 A CN 104590367A CN 201410836773 A CN201410836773 A CN 201410836773A CN 104590367 A CN104590367 A CN 104590367A
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- cylinder
- oil pocket
- cylinder barrel
- connecting rod
- centering
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D7/00—Steering linkage; Stub axles or their mountings
- B62D7/16—Arrangement of linkage connections
Abstract
The invention relates to a rear axle steering mechanism of a puddle jumper, and belongs to the technical field of automobile steering systems. The rear axle steering mechanism comprises a left steering side pull rod, a right steering side pull rod, a left knuckle and a right knuckle. The left steering side pull rod is hinged to the left knuckle, the right steering side pull rod is hinged to the right knuckle, an integrated driving centering hydraulic cylinder is further included, the left end of the integrated driving centering hydraulic cylinder is hinged to the left steering side pull rod, and the right end of the integrated driving centering hydraulic cylinder is hinged to the right steering side pull rod. A driving cylinder barrel with an active steering function, a centering cylinder barrel with a centering and returning function and a track rod supporting cylinder barrel are integrated together, connection of bulbs on the two sides is omitted, and the structure of a rear axle steering mechanical system can be compact through the structure.
Description
Technical field
The invention belongs to automobile steering system technical field, be specifically related to a kind of light off-road vehicle rear-axle steering mechanism.
Background technology
In light off-road vehicle all-wheel control system, rear-axle steering need possess active steering function and need possess gets back to automobile craspedodrome state and locked function when needed.Owing to adopting independent suspension to cause vehicle frame horizontal space less, for ensureing above-mentioned functions in layout rear-axle steering mechanism, be difficult to hydraulic actuating cylinder and the lockable mechanism of arranging double-swing arm steering trapezium and traditional two ends band bulb.
Summary of the invention
Object of the present invention is exactly the defect for prior art, provides one to have structure simple, the light off-road vehicle rear-axle steering mechanism of flexible arrangement.
The technical solution used in the present invention is: comprise left steering lateral bracing strut, right steering lateral bracing strut, left steering joint and right steering joint, described left steering lateral bracing strut and left steering save hinged, described right steering lateral bracing strut and right steering save hinged, it also comprises integrated form and drives centering hydraulic actuating cylinder, described integrated form drives the hinged left steering lateral bracing strut of centering hydraulic actuating cylinder left end, and described integrated form drives the hinged right steering lateral bracing strut of centering hydraulic actuating cylinder right-hand member.
Preferred structure further, described integrated form drives centering hydraulic actuating cylinder to comprise hydraulic actuating cylinder housing, is provided with intermediate rod and supports cylinder barrel, drive cylinder barrel and centering cylinder barrel in described hydraulic actuating cylinder housing; Described intermediate rod supports the intermediate rod being provided with in cylinder barrel and supporting cylinder barrel through intermediate rod, and the part that intermediate rod support cylinder barrel is stretched out in described intermediate rod one end is fixedly connected with contiguous block; Be provided with driving cylinder connecting rod in described driving cylinder barrel, described driving cylinder connecting rod one end is stretched out and is driven the part of cylinder barrel to be fixedly connected with contiguous block; Be provided with centralizing cylinder connecting rod in described centering cylinder barrel, the part that centering cylinder barrel is stretched out in described centralizing cylinder connecting rod one end is fixedly connected with contiguous block.
In technique scheme, by contiguous block, intermediate rod, driving cylinder connecting rod and centralizing cylinder connecting rod are linked together, compact conformation, reliable transmission.
Further preferred structure, described intermediate rod left end stretches out intermediate rod, and to support the part of cylinder barrel hinged with left steering lateral bracing strut, described right steering lateral bracing strut and contiguous block hinged.
Preferred structure further, described driving cylinder barrel and centering cylinder barrel support cylinder barrel relative to intermediate rod and be arranged in parallel.
Preferred structure further, the first oil pocket about being provided with driving cylinder piston in described driving cylinder barrel and being separately positioned on driving cylinder piston and the second oil pocket; Described hydraulic actuating cylinder housing has driving cylinder left power-assisted hydraulic fluid port and the right power-assisted hydraulic fluid port of driving cylinder, described first oil pocket communicates with the left power-assisted hydraulic fluid port of driving cylinder, described second oil pocket communicates with the right power-assisted hydraulic fluid port of driving cylinder, and described driving cylinder piston is fixedly connected with driving cylinder connecting rod.
Preferred structure further, be provided with the magnet ring permanent seat be threaded with driving cylinder interlinking lever end in described driving cylinder barrel and pass on left with driving cylinder barrel the Linear displacement transducer permanent seat be threaded, be provided with in described magnet ring permanent seat left end hole by the fastening magnet ring of Cross Recess Head Screw, be provided with Linear displacement transducer in described Linear displacement transducer permanent seat, described Linear displacement transducer left end is provided with the outside that Linear displacement transducer wire harness is connected to driving cylinder cylinder barrel.
Preferred structure further, rear end floating piston and rod end floating piston is provided with in described centering cylinder barrel, described rod end floating piston to be set on centralizing cylinder connecting rod and spacing by the connecting rod bolt being fixed on centralizing cylinder interlinking lever end, the 3rd oil pocket is formed with centering inner wall of cylinder on the left of described rear end floating piston, form the 4th oil pocket with centering inner wall of cylinder on the right side of described rod end floating piston, between described rear end floating piston and rod end floating piston, form air chamber.
Preferred structure further, described hydraulic actuating cylinder housing has centralizing cylinder hydraulic fluid port, described centering cylinder barrel cylinder wall is provided with internal oil channel, described centralizing cylinder hydraulic fluid port communicates with internal oil channel entrance, described internal oil channel comprises the first outlet and second be communicated with in centering cylinder barrel and exports, described first outlet communicates with the 3rd oil pocket, and described second outlet communicates with the 4th oil pocket; Described air chamber communicates with the pore leading to air; Described air chamber does not all communicate with the 3rd oil pocket, the 4th oil pocket.
In technique scheme, the first outlet of internal oil channel and the setting of the second outlet, make the 3rd oil pocket and the 4th oil pocket can while oil-feed, and then meet the alignment function of centering cylinder barrel.
Preferred structure further, left position jump ring and right position jump ring is provided with between described rear end floating piston and rod end floating piston, in described left position jump ring and the spacing groove being arranged on centering inner wall of cylinder of right position jump ring, described in the Distance geometry between the left end of described left position jump ring and the right-hand member of right position jump ring, connecting rod bolt thickness is equal.
In technique scheme, left position jump ring and right position jump ring are respectively as the position limiting structure of rear end floating piston and rod end floating piston.
Preferred structure further, distance between the left end of described magnet ring permanent seat and the end face of Linear displacement transducer forms the effective travel that driving cylinder connecting rod is moved to the left in the first oil pocket, distance between the right-hand member of described driving cylinder piston and the left end of the first guide holder forms the effective travel of driving cylinder connecting rod in the second oil pocket, and the effective travel of described driving cylinder connecting rod in the first oil pocket and the second oil pocket is equal.
Preferred structure further, ultimate range between the left end of described rear end floating piston and the right-hand member being arranged on the limit base in centering cylinder barrel forms the effective travel that centralizing cylinder connecting rod is moved to the left in the 3rd oil pocket, ultimate range between the right-hand member of described rod end floating piston and the left end of the second guide holder forms the effective travel that centralizing cylinder connecting rod moves right in the 4th oil pocket, and the effective travel of described centralizing cylinder connecting rod in the 3rd oil pocket and the 4th oil pocket is equal.
Preferred structure further, the effective travel of described centralizing cylinder connecting rod in the 3rd oil pocket or the 4th oil pocket is less than the effective travel of driving cylinder connecting rod in the first oil pocket or the second oil pocket.
Preferred structure further, described intermediate rod support cylinder barrel two ends are provided with DU bearing, locating ring, jump ring, anti-dust seal for supporting intermediate rod.
Preferred structure further, described integrated form drives centering hydraulic actuating cylinder to be fixed on vehicle beam by bolt and installation tapped bore.
The present invention, compared to existing double-swing arm steering trapezium, has the advantage reducing Ackermam error; There is the driving cylinder barrel of active steering function, there is the centering cylinder barrel of centering return function and intermediate rod support cylinder barrel and integrate, eliminate both sides bulb and connect, the mechanical system structure of rear-axle steering can be made compact by this structure.
Accompanying drawing explanation
Fig. 1 is rear-axle steering mechanism structure schematic diagram of the present invention;
Fig. 2 is the structural representation that integrated form of the present invention drives centering hydraulic actuating cylinder;
Fig. 3 is right steering lateral bracing strut structural representation of the present invention;
Fig. 4 is hydraulic actuating cylinder housing structure schematic diagram of the present invention;
Fig. 5 is that intermediate rod of the present invention supports cylinder barrel inner structure schematic diagram;
Inner structure schematic diagram when Fig. 6 is integrated form of the present invention driving centering hydraulic actuating cylinder meta;
Fig. 7 is A place local structure enlarged drawing in Fig. 6;
Fig. 8 is B place local structure enlarged drawing in Fig. 6;
Fig. 9 is that integrated form of the present invention drives centering hydraulic actuating cylinder to drive schematic diagram when turning to the right;
Figure 10 is integrated form of the present invention schematic diagram when driving centering hydraulic actuating cylinder centering return locked.
In figure: 1-left steering is taken turns, 2-left steering saves, 3-left steering lateral bracing strut, 4-car crossbeam, 5-integrated form drives centering hydraulic actuating cylinder, 6-bolt, 7-right steering lateral bracing strut, 8-right steering saves, 9-right steering is taken turns, 10-intermediate rod, 11-hydraulic actuating cylinder housing, the left power-assisted hydraulic fluid port of 12-driving cylinder, 13-installs tapped bore, the right power-assisted hydraulic fluid port of 14-driving cylinder, 15-driving cylinder connecting rod, 16-contiguous block, 17-jam nut, 18-centralizing cylinder connecting rod, 19-centralizing cylinder hydraulic fluid port, 20-draw-in bar bulb assembly, the prenex adjusting nut of 21-, 22-outside link bulb assembly, 23-rear end floating piston, 24-pore, 25-rod end floating piston, 26-driving cylinder piston, 27-drives cylinder barrel, 28-intermediate rod supports cylinder barrel, 29-centering cylinder barrel, 30-jump ring, 31-anti-dust seal, 32-locating ring, 33-DU bearing, 34-grease, 35-right position jump ring, 36-left position jump ring, 37-internal oil channel, 38-connecting rod bolt, 39-first oil pocket, 40-second oil pocket, 41-the 3rd oil pocket, 42-the 4th oil pocket, 43-air chamber, 44-limit base, 45-Linear displacement transducer, 46-magnet ring permanent seat, 47-marks closely screw, 48-Linear displacement transducer permanent seat, 49-magnet ring, 50-Cross Recess Head Screw, 51-first guide holder, 52-second guide holder.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail, is convenient to be well understood to the present invention, but they do not form restriction to the present invention.
As shown in Figure 1 and Figure 2, the present invention includes left steering wheel 1, right steering wheel 9, integrated form driving centering hydraulic actuating cylinder 5; Described integrated form drives centering hydraulic actuating cylinder 5 to be fixed on vehicle beam 4 by bolt 6 and installation tapped bore 13; Described integrated form drives centering hydraulic actuating cylinder 5, and left end is threaded connection left steering lateral bracing strut 3, and right-hand member is threaded connection right steering lateral bracing strut 7; Described left steering wheel 1 saves 2 with left steering and is fixedly connected with; Described right steering wheel 9 saves 8 with right steering and is fixedly connected with; Described left steering joint 2 is connected by bulb with left steering lateral bracing strut 3; Described right steering joint 8 is connected by bulb with right steering lateral bracing strut 7.
As shown in Figure 3, described right steering lateral bracing strut 7, comprises left end threaded draw-in bar bulb assembly 20, prenex adjusting nut 21 and outside link bulb assembly 22; Described draw-in bar bulb assembly 20 is connected with outside link bulb assembly 22 by screw thread; Described prenex adjusting nut 21 is for adjusting the toe-angle of rear-axle steering wheel.
As Figure 1-Figure 5, the present invention includes hydraulic actuating cylinder housing 11, be provided with intermediate rod in described hydraulic actuating cylinder housing 11 and support cylinder barrel 28, drive cylinder barrel 27 and centering cylinder barrel 29; Described intermediate rod supports the intermediate rod 10 being provided with in cylinder barrel 28 and supporting cylinder barrel 28 through intermediate rod, and the part that intermediate rod support cylinder barrel 28 is stretched out in described intermediate rod 10 one end is fixedly connected with contiguous block 16; Be provided with driving cylinder connecting rod 15 in described driving cylinder barrel 27, described driving cylinder connecting rod 15 one end is stretched out and is driven the part of cylinder barrel 27 to be fixedly connected with contiguous block 16 by jam nut 17; Be provided with centralizing cylinder connecting rod 18 in described centering cylinder barrel 29, the part that centering cylinder barrel 29 is stretched out in described centralizing cylinder connecting rod 18 one end is fixedly connected with contiguous block 16 by jam nut 17.The part that described intermediate rod 10 left end stretches out intermediate rod support cylinder barrel 28 is hinged with left steering lateral bracing strut 3, and described right steering lateral bracing strut 7 is hinged with contiguous block 16.Described driving cylinder barrel 27 and centering cylinder barrel 29 support cylinder barrel 28 relative to intermediate rod and be arranged in parallel.Described intermediate rod 10 and contiguous block 16 realize fastening by being threaded of draw-in bar bulb assembly 20, and described centralizing cylinder connecting rod 18, intermediate rod 10 and driving cylinder connecting rod 15 realize synchronous linear movement relation by contiguous block 16; The axis that described intermediate rod 10 can support cylinder barrel 28 along intermediate rod carries out linear reciprocal movement, saves 2, left steering lateral bracing strut 3, intermediate rod 10, right steering lateral bracing strut 7, right steering save 8 and jointly form rear-axle steering tie rod linkage by left steering.Described intermediate rod support cylinder barrel 28 two ends are provided with DU bearing 33, locating ring 32, jump ring 30, anti-dust seal 31 for supporting intermediate rod 10, and intermediate rod supports between cylinder barrel 28 and intermediate rod 10 and is provided with grease 34.
As shown in Figure 6, Figure 7, driving cylinder piston 26 and the first oil pocket 39 and the second oil pocket 40 being separately positioned on driving cylinder piston about 26 is provided with in described driving cylinder barrel 27; Described hydraulic actuating cylinder housing 11 has driving cylinder left power-assisted hydraulic fluid port 12 and the right power-assisted hydraulic fluid port 14 of driving cylinder, described first oil pocket 39 communicates with the left power-assisted hydraulic fluid port 12 of driving cylinder, described second oil pocket 40 communicates with the right power-assisted hydraulic fluid port 14 of driving cylinder, and described driving cylinder piston 26 is fixedly connected with driving cylinder connecting rod 15.Be provided with the magnet ring permanent seat 46 that is connected with driving cylinder connecting rod 15 end thread in described driving cylinder barrel 27 and pass on left with driving cylinder barrel 27 the Linear displacement transducer permanent seat 48 be threaded, be provided with in described magnet ring permanent seat 46 left end hole by the fastening magnet ring 49 of Cross Recess Head Screw 50, in order to the actual position of real-time perception driving cylinder piston 26, Linear displacement transducer 45 is provided with in described Linear displacement transducer permanent seat 48, prevent the longitudinal travel of Linear displacement transducer 45 by marking closely screw 47 and rotate in a circumferential direction, described Linear displacement transducer 45 left end is provided with the outside that Linear displacement transducer wire harness 45.1 is connected to driving cylinder cylinder barrel 27.
As Fig. 6, shown in Fig. 8, rear end floating piston 23 and rod end floating piston 25 is provided with in described centering cylinder barrel 29, described rod end floating piston 25 to be set on centralizing cylinder connecting rod 18 and spacing by the connecting rod bolt 38 being fixed on centralizing cylinder connecting rod 18 end, described rod end floating piston 25 can slide on centralizing cylinder connecting rod 18, the 3rd oil pocket 41 is formed with centering cylinder barrel 29 inwall on the left of described rear end floating piston 23, the 4th oil pocket 42 is formed with centering cylinder barrel 29 inwall on the right side of described rod end floating piston 25, air chamber 43 is formed between described rear end floating piston 23 and rod end floating piston 25.
As shown in Figure 6, described hydraulic actuating cylinder housing 11 has centralizing cylinder hydraulic fluid port 19, described centering cylinder barrel 29 cylinder wall is provided with internal oil channel 37, described centralizing cylinder hydraulic fluid port 19 communicates with internal oil channel 37 entrance, described internal oil channel 37 comprises the first outlet 37.1 and the second outlet 37.2 be communicated with in centering cylinder barrel 29, described first outlet 37.1 communicates with the 3rd oil pocket 41, and described second outlet 37.2 communicates with the 4th oil pocket 42; Described air chamber 43 communicates with the pore 24 leading to air; Described air chamber 43 does not all communicate with the 3rd oil pocket 41, the 4th oil pocket 42.
As shown in Fig. 6, Fig. 8, left position jump ring 36 and right position jump ring 35 is provided with between described rear end floating piston 23 and rod end floating piston 25, in described left position jump ring 36 and the spacing groove 29.1 being arranged on centering cylinder barrel 29 inwall of right position jump ring 35, described in the Distance geometry between the left end of described left position jump ring 36 and the right-hand member of right position jump ring 35, connecting rod bolt 38 thickness is equal.
As shown in Figure 6, distance between the left end of described magnet ring permanent seat 46 and the end face 45.2 of Linear displacement transducer 45 when centering oil cylinder meta (integrated form drive) forms the effective travel that driving cylinder connecting rod 15 is moved to the left in the first oil pocket 39, distance between the right-hand member of described driving cylinder piston 26 and the left end of the first guide holder 51 when centering oil cylinder meta (integrated form drive) forms the effective travel of driving cylinder connecting rod 15 in the second oil pocket 40, and the effective travel of described driving cylinder connecting rod 15 in the first oil pocket 39 and the second oil pocket 40 is equal; Ultimate range between the left end of described rear end floating piston 23 and the right-hand member being arranged on the limit base 44 in centering cylinder barrel 29 forms the effective travel that centralizing cylinder connecting rod 18 is moved to the left in the 3rd oil pocket 41, ultimate range between the right-hand member of described rod end floating piston 25 and the left end of the second guide holder 52 forms the effective travel that centralizing cylinder connecting rod 18 moves right in the 4th oil pocket 42, the effective travel of described centralizing cylinder connecting rod 18 in the 3rd oil pocket 41 and the 4th oil pocket 42 is equal, by being arranged on the auxiliary realization of limit base 44 in centering cylinder barrel 29.The effective travel of described centralizing cylinder connecting rod 18 in the 3rd oil pocket 41 or the 4th oil pocket 42 is less than the effective travel of driving cylinder connecting rod 15 in the first oil pocket 39 or the second oil pocket 40, thus can ensure that Linear displacement transducer is not damaged by pressure.
Working process of the present invention: as shown in Figure 6, automobile craspedodrome state or back axle not steering state.The 3rd oil pocket 41 be responsible on the centering cylinder barrel 29 of centering return function is communicated with oil return tank by centralizing cylinder hydraulic fluid port 19, the 4th oil pocket 42 on centering cylinder barrel 29 also communicates with oil return tank through internal oil channel 37 to centralizing cylinder hydraulic fluid port 19, the thrust (or pulling force) now acted on centralizing cylinder connecting rod 18 by the 3rd oil pocket 41 and the 4th oil pocket 42 is approximately 0, and centralizing cylinder connecting rod 18 not to cut any ice power to intermediate rod 10; Be responsible for turning to the first oil pocket 39 of driving cylinder barrel 27 inside of driving effect to communicate with the left power-assisted hydraulic fluid port 12 of driving cylinder, second oil pocket 40 and the right power-assisted hydraulic fluid port 14 of driving cylinder communicate, but now because automobile is at craspedodrome state or back axle not steering state, driving cylinder left power-assisted hydraulic fluid port 12 and the right power-assisted hydraulic fluid port 14 of driving cylinder are all controlled in off condition by electromagnetic valve group, do not communicate with any oil circuit.If now automobile left steering wheel 1 (or right steering wheel 9) is used for intermediate rod 10 by external impacts masterpiece, possesses the trend of ordering about intermediate rod 10 and moving, but due to the first oil pocket 39 and the second oil pocket 40 all airtight, due to the incompressible characteristic of fluid, make intermediate rod keep motionless, automobile is still at craspedodrome state (or back axle not steering state).
As shown in Figure 9, automobile steering state to the right.The 3rd oil pocket 41 now on centering cylinder barrel 29 is communicated with oil return tank by centralizing cylinder hydraulic fluid port 19, the 4th oil pocket 42 on centering cylinder barrel 29 also communicates with oil return tank through internal oil channel 37 to centralizing cylinder hydraulic fluid port 19, the thrust (or pulling force) now acted on centralizing cylinder connecting rod 18 by the 3rd oil pocket 41 and the 4th oil pocket 42 is approximately 0, and centralizing cylinder connecting rod 18 not to cut any ice power to intermediate rod 10; High pressure oil to Hydraulic Pump or high pressure accumulator enters the first oil pocket 39 through the left power-assisted hydraulic fluid port 12 of driving cylinder, and promote driving cylinder piston 26 to the right in the direction of the arrow thus drive driving cylinder connecting rod 15 to move right, driving cylinder connecting rod 15 drives intermediate rod 10 to move right the object reaching and promote wheel steering together with time positive cylinder rod 18 by contiguous block 16 simultaneously.Low pressure oil simultaneously in the second oil pocket 40 flow to oil return tank by the right power-assisted hydraulic fluid port 14 of driving cylinder; 4th oil pocket 42 diminishes because of volume, and the low pressure oil in its chamber flow to centralizing cylinder hydraulic fluid port 19 by internal oil channel 37 and flow to oil return tank again; Air chamber 43 becomes large because of volume, sucks air from pore 24.
It is just contrary that automobile returns timing hydraulic circuit left, namely the high pressure oil from Hydraulic Pump or high pressure accumulator enters the second oil pocket 40 through the right power-assisted hydraulic fluid port 14 of driving cylinder, and promote driving cylinder piston 26 left along arrow reversing sense thus drive driving cylinder connecting rod 15 to left movement, driving cylinder connecting rod 15 drives intermediate rod 10 to reach promotion wheel to left movement together with time positive cylinder rod 18 by contiguous block 16 simultaneously and returns positive object, low pressure oil simultaneously in the first oil pocket 39 flow to oil return tank by the left power-assisted hydraulic fluid port 12 of driving cylinder, 4th oil pocket 42 internal cause volume becomes large from the oil suction of oil return tank, air chamber 43 diminishes because of volume, air is discharged from pore 24.
As shown in Figure 10, state when et out of order centering return is locked.Now electromagnetic valve group makes driving cylinder left power-assisted hydraulic fluid port 12 and the right power-assisted hydraulic fluid port 14 of driving cylinder all communicate with oil return tank, namely the first oil pocket 39 and the second oil pocket 40 all communicate with oil return tank, therefore driving cylinder connecting rod 15 is not by the added force of hydraulic oil, only follows contiguous block 16 and moves together; High pressure oil meanwhile from high pressure accumulator communicates with centralizing cylinder hydraulic fluid port 19, high pressure oil enters the 3rd oil pocket 41 and the 4th oil pocket 42 of centering cylinder barrel 29 after centralizing cylinder hydraulic fluid port 19 simultaneously, the high pressure oil entering the 3rd oil pocket 41 promotes rear end floating piston 23 left, stops after being pressed onto left position jump ring 36; After the high pressure oil entered in the 4th oil pocket 42 promotes rod end floating piston 25 left, drive centralizing cylinder connecting rod 18 to left movement, until stop after being pressed onto right position jump ring 35, the top rear end floating piston 23 of connecting rod nut 38 left end be simultaneously connected with centralizing cylinder connecting rod 18; Air chamber 43 diminishes due to volume, discharges air from pore 24; First oil pocket 39 diminishes due to volume, discharges low pressure oil to oil sump tank from the left power-assisted hydraulic fluid port 12 of driving cylinder; Second oil pocket 40 becomes large due to volume, and the right power-assisted hydraulic fluid port 14 of driving cylinder sucks lower than oil from oil return tank; Because high pressure accumulator inside still exists higher pressure, centralizing cylinder connecting rod 18 is fixed on back axle not steering state by two floating pistons, thus reaches locked function.
The content that this specification sheets is not described in detail belongs to the known prior art of professional and technical personnel in the field.
Claims (14)
1. a light off-road vehicle rear-axle steering mechanism, comprise left steering lateral bracing strut (3), right steering lateral bracing strut (7), left steering joint (2) and right steering joint (8), it is hinged that described left steering lateral bracing strut (3) and left steering save (2), it is hinged that described right steering lateral bracing strut (7) and right steering save (8), it is characterized in that: it also comprises integrated form and drives centering hydraulic actuating cylinder (5), described integrated form drives the hinged left steering lateral bracing strut (3) of centering hydraulic actuating cylinder (5) left end, described integrated form drives the hinged right steering lateral bracing strut (7) of centering hydraulic actuating cylinder (5) right-hand member.
2. light off-road vehicle rear-axle steering mechanism according to claim 1, it is characterized in that: described integrated form drives centering hydraulic actuating cylinder (5) to comprise hydraulic actuating cylinder housing (11), be provided with intermediate rod in described hydraulic actuating cylinder housing (11) and support cylinder barrel (28), drive cylinder barrel (27) and centering cylinder barrel (29); Described intermediate rod supports the intermediate rod (10) being provided with in cylinder barrel (28) and supporting cylinder barrel (28) through intermediate rod, and the part that intermediate rod support cylinder barrel (28) is stretched out in described intermediate rod (10) one end is fixedly connected with contiguous block (16); Be provided with driving cylinder connecting rod (15) in described driving cylinder barrel (27), described driving cylinder connecting rod (15) one end is stretched out and is driven the part of cylinder barrel (27) to be fixedly connected with contiguous block (16); Be provided with centralizing cylinder connecting rod (18) in described centering cylinder barrel (29), the part that centering cylinder barrel (29) is stretched out in described centralizing cylinder connecting rod (18) one end is fixedly connected with contiguous block (16).
3. light off-road vehicle rear-axle steering mechanism according to claim 2, it is characterized in that: the part that described intermediate rod (10) left end stretches out intermediate rod support cylinder barrel (28) is hinged with left steering lateral bracing strut (3), described right steering lateral bracing strut (7) is hinged with contiguous block (16).
4. light off-road vehicle rear-axle steering mechanism according to claim 1 and 2, is characterized in that: described driving cylinder barrel (27) and centering cylinder barrel (29) support cylinder barrel (28) relative to intermediate rod and be arranged in parallel.
5. light off-road vehicle rear-axle steering mechanism according to claim 4, is characterized in that: the first oil pocket (39) about being provided with driving cylinder piston (26) in described driving cylinder barrel (27) and being separately positioned on driving cylinder piston (26) and the second oil pocket (40); Described hydraulic actuating cylinder housing (11) has driving cylinder left power-assisted hydraulic fluid port (12) and the right power-assisted hydraulic fluid port (14) of driving cylinder, described first oil pocket (39) communicates with the left power-assisted hydraulic fluid port (12) of driving cylinder, described second oil pocket (40) communicates with the right power-assisted hydraulic fluid port (14) of driving cylinder, and described driving cylinder piston (26) is fixedly connected with driving cylinder connecting rod (15).
6. light off-road vehicle rear-axle steering mechanism according to claim 5, it is characterized in that: be provided with the magnet ring permanent seat (46) be connected with driving cylinder connecting rod (15) end thread in described driving cylinder barrel (27) and pass on left with driving cylinder barrel (27) the Linear displacement transducer permanent seat (48) be threaded, be provided with in described magnet ring permanent seat (46) left end hole by the fastening magnet ring (49) of Cross Recess Head Screw (50), Linear displacement transducer (45) is provided with in described Linear displacement transducer permanent seat (48), described Linear displacement transducer (45) left end is provided with the outside that Linear displacement transducer wire harness (45.1) is connected to driving cylinder cylinder barrel (27).
7. light off-road vehicle rear-axle steering mechanism according to claim 4, it is characterized in that: in described centering cylinder barrel (29), be provided with rear end floating piston (23) and rod end floating piston (25), it is upper and spacing by the connecting rod bolt (38) being fixed on centralizing cylinder connecting rod (18) end that described rod end floating piston (25) is set in centralizing cylinder connecting rod (18), described rear end floating piston (23) left side forms the 3rd oil pocket (41) with centering cylinder barrel (29) inwall, described rod end floating piston (25) right side forms the 4th oil pocket (42) with centering cylinder barrel (29) inwall, air chamber (43) is formed between described rear end floating piston (23) and rod end floating piston (25).
8. light off-road vehicle rear-axle steering mechanism according to claim 7, it is characterized in that: described hydraulic actuating cylinder housing (11) has centralizing cylinder hydraulic fluid port (19), described centering cylinder barrel (29) cylinder wall is provided with internal oil channel (37), described centralizing cylinder hydraulic fluid port (19) communicates with internal oil channel (37) entrance, described internal oil channel (37) comprises the first outlet (37.1) and second be communicated with in centering cylinder barrel (29) and exports (37.2), described first outlet (37.1) communicates with the 3rd oil pocket (41), described second outlet (37.2) communicates with the 4th oil pocket (42), described air chamber (43) communicates with the pore (24) leading to air, described air chamber (43) does not all communicate with the 3rd oil pocket (41), the 4th oil pocket (42).
9. light off-road vehicle rear-axle steering mechanism according to claim 8, it is characterized in that: between described rear end floating piston (23) and rod end floating piston (25), be provided with left position jump ring (36) and right position jump ring (35), described left position jump ring (36) and right position jump ring (35) is spacing is arranged in the groove (29.1) of centering cylinder barrel (29) inwall, described in the Distance geometry between the left end of described left position jump ring (36) and the right-hand member of right position jump ring (35), connecting rod bolt (38) thickness is equal.
10. light off-road vehicle rear-axle steering mechanism according to claim 8, it is characterized in that: the distance between the left end of described magnet ring permanent seat (46) and the end face (45.2) of Linear displacement transducer (45) forms the effective travel that driving cylinder connecting rod (15) is moved to the left in the first oil pocket (39), distance between the right-hand member of described driving cylinder piston (26) and the left end of the first guide holder (51) forms the effective travel of driving cylinder connecting rod (15) in the second oil pocket (40), the effective travel of described driving cylinder connecting rod (15) in the first oil pocket (39) and the second oil pocket (40) is equal.
11. light off-road vehicle rear-axle steering mechanisms according to claim 10, it is characterized in that: the ultimate range between the left end of described rear end floating piston (23) and the right-hand member being arranged on the limit base (44) in centering cylinder barrel (29) forms the effective travel that centralizing cylinder connecting rod (18) is moved to the left in the 3rd oil pocket (41), ultimate range between the right-hand member of described rod end floating piston (25) and the left end of the second guide holder (52) forms the effective travel that centralizing cylinder connecting rod (18) moves right in the 4th oil pocket (42), the effective travel of described centralizing cylinder connecting rod (18) in the 3rd oil pocket (41) and the 4th oil pocket (42) is equal.
12. light off-road vehicle rear-axle steering mechanisms according to claim 11, is characterized in that: the effective travel of described centralizing cylinder connecting rod (18) in the 3rd oil pocket (41) or the 4th oil pocket (42) is less than the effective travel of driving cylinder connecting rod (15) in the first oil pocket (39) or the second oil pocket (40).
13. light off-road vehicle rear-axle steering mechanisms according to claim 2, is characterized in that: described intermediate rod support cylinder barrel (28) two ends are provided with DU bearing (33), locating ring (32), jump ring (30), anti-dust seal (31) for supporting intermediate rod (10).
14. light off-road vehicle rear-axle steering mechanisms according to claim 1, is characterized in that: described integrated form drives centering hydraulic actuating cylinder (5) to be fixed on vehicle beam (4) by bolt (6) and installation tapped bore (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410836773.3A CN104590367B (en) | 2014-12-29 | 2014-12-29 | Rear axle steering mechanism of puddle jumper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410836773.3A CN104590367B (en) | 2014-12-29 | 2014-12-29 | Rear axle steering mechanism of puddle jumper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104590367A true CN104590367A (en) | 2015-05-06 |
| CN104590367B CN104590367B (en) | 2017-04-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410836773.3A Active CN104590367B (en) | 2014-12-29 | 2014-12-29 | Rear axle steering mechanism of puddle jumper |
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| CN (1) | CN104590367B (en) |
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| CN104930016A (en) * | 2015-07-08 | 2015-09-23 | 武汉理工大学 | Hydraulic cylinder achieving steering function and return-to-center function |
| CN108248682A (en) * | 2018-02-02 | 2018-07-06 | 河北农业大学 | A kind of agricultural chassis of three drive electric of four-wheel |
| CN113859355A (en) * | 2021-09-30 | 2021-12-31 | 三一专用汽车有限责任公司 | Engineering vehicle and electric control hydraulic steering system, control method and controller thereof |
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| CN104930016A (en) * | 2015-07-08 | 2015-09-23 | 武汉理工大学 | Hydraulic cylinder achieving steering function and return-to-center function |
| CN108248682A (en) * | 2018-02-02 | 2018-07-06 | 河北农业大学 | A kind of agricultural chassis of three drive electric of four-wheel |
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| CN113859355B (en) * | 2021-09-30 | 2023-02-17 | 三一专用汽车有限责任公司 | Engineering vehicle and electric control hydraulic steering system, control method and controller thereof |
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| CN104590367B (en) | 2017-04-12 |
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