CN103465974A - Double-headed ferry vehicle, head-switching driving switching device and head-switching driving switching method for ferry vehicle - Google Patents
Double-headed ferry vehicle, head-switching driving switching device and head-switching driving switching method for ferry vehicle Download PDFInfo
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- CN103465974A CN103465974A CN2012101859390A CN201210185939A CN103465974A CN 103465974 A CN103465974 A CN 103465974A CN 2012101859390 A CN2012101859390 A CN 2012101859390A CN 201210185939 A CN201210185939 A CN 201210185939A CN 103465974 A CN103465974 A CN 103465974A
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Abstract
The invention discloses a double-headed ferry vehicle, a head-switching driving switching device and a head-switching driving switching method for the ferry vehicle. The ferry vehicle comprises a chassis, a first driving cab, a second driving cab, a first steering system, a second steering system, a first wheel set, a second wheel set and the head-switching driving switching device; the device comprises a hydraulic power unit, a first executing unit, a second executing unit and a switching control unit; the switching control unit comprises a first switching switch and a second switching switch which are respectively arranged in the first driving cab and the second driving cab; when the driving of the first driving cab is executed, the first switching switch generates a first control signal to control the hydraulic power unit to drive the first executing unit to be in a moving state so that the first wheel set becomes a drive wheel, and to drive the second executing unit to be in a locked state so that the second wheel set becomes a driven wheel; when the driving of the second driving cab is executed, the second switching switch generates a second control signal to control the hydraulic power unit to drive the second executing unit to be in the moving state so that the second wheel set becomes the drive wheel, and to drive the first executing unit to be in the locked state so that the first wheel set becomes the driven wheel.
Description
Technical field
The present invention relates to a kind of airport ferry push, relate in particular to a kind of double end ferry bus and change head travel shifter and method.
Background technology
At present airport aircraft quantity is many, and seat in the plane is few, builds a needed fund in seat in the plane larger, so almost there is 2/3rds aircraft to rest on seat in the plane far away, needs by the ferry bus passenger-carrying.
For less airport (as Australian airport, airport, Macao etc.), the tonnage of ferry bus is large, travels just to there will be to turn to difficulty (need to turn around to travel in little place, as worked under aircraft or shelter bridge etc.).As just need very large space while turning around to travel.In order to meet the demand of airport traffic, can not dwindle the oad of airport ferry push.And the double end ferry bus can meet the demand of airport traffic and also can overcome the difficult problem that turns around of travelling, as the chaufeur that only needs ferry bus in little vacant lot changes head, drive and get final product.
But current double end ferry bus, what it adopted usually is full hydraulic system (fluid-link steering, hydraulic pressure just return), and time just/locked system of the steering swivel system of car load and flower wheel at one on the whole, and the speed that airport travels is in the 50Km/h left and right, the distance of travelling is far away, so in driving process, hydraulic efficiency pressure system can produce a large amount of heats, easily make the life-span of Hydraulic Elements shorten or damage, cause very large potential safety hazard.And, the just/locked system of returning of the steering swivel system of car load and flower wheel one on the whole, maintenance is inconvenient.
Summary of the invention
In order to solve the problem of above-mentioned prior art, the object of the present invention is to provide a kind of double end ferry bus and change head travel shifter and method, need very large space while turning around to travel to overcome and turn to difficult problem.
In order to solve the problem of above-mentioned prior art, the present invention also aims to provide a kind of double end ferry bus and change head travel shifter and method, to reach long service life, safety factor is high, purpose easy to maintenance.
To achieve these goals, the invention provides a kind of double end ferry bus, described double end ferry bus comprises: underframe, and described underframe comprises the first bridge and the second bridge that lays respectively at two ends, the first operator's compartment and the second operator's compartment, be relatively arranged on the top at described underframe two ends, the first steering swivel system, it includes two the first steering hardwarees, two the first steering track rod handles and first deflecting bar, described two the first steering hardwarees are arranged at respectively the both sides of described the first bridge, one end of described two the first steering track rod handles is connected with described two the first steering hardwarees respectively, and the other end is connected with the two ends of described the first deflecting bar respectively, the first wheels, be arranged at the both sides of described the first bridge and be connected with described the first bridge by described the first steering hardware respectively, the second steering swivel system, it includes two the second steering hardwarees, two the second steering track rod handles and second deflecting bar, described two the second steering hardwarees are arranged at respectively the both sides of described the second bridge, one end of described two the second steering track rod handles is connected with described two the second steering hardwarees respectively, and the other end is connected with the two ends of described the second deflecting bar respectively, the second wheels, be arranged at the both sides of described the second bridge and be connected with described the second bridge by described the second steering hardware respectively, its characteristics are, described double end ferry bus also includes and independently changes the head shifter that travels, and it comprises: hydraulic power unit is arranged on described underframe, and provides power by hydraulic oil, the first performance element, be connected with described the first bridge and described the first steering track rod handle, and drive and be connected with described hydraulic power unit, the second performance element, be connected with described the second bridge and described the second steering track rod handle, and drive and be connected with described hydraulic power unit, switch control unit, it includes the first change-over switch be arranged in described the first operator's compartment and the second change-over switch be arranged in described the second operator's compartment, wherein, described the first change-over switch is carried out when the first operator's compartment travels and is produced the first control signal at described double end ferry bus, controlling described hydraulic power unit by described switch control unit drives described the first performance element in active state and makes the described first round consist of driving wheel, and drive described the second performance element in locking state and make described second to take turns and consist of flower wheel, described the second wheels keep vertical in the process of moving with described the second bridge, described the second change-over switch is carried out when the second operator's compartment travels and is produced the second control signal at described double end ferry bus, controlling described hydraulic power unit by described switch control unit drives described the second performance element in active state and makes described second to take turns and consist of driving wheel, and drive described the first performance element in locking state and make the described first round consist of flower wheel, described the first wheels keep vertical in the process of moving with described the first bridge.
In an embodiment of the present invention, described the first performance element is by a left side, right two the first oil cylinders form, described the second performance element is by a left side, right two the second oil cylinders form, wherein, each oil cylinder in described the first oil cylinder and described the second oil cylinder includes the hydraulic fluid port of four described hydraulic oil turnover of confession and the expansion link of two mutually noninterferes, and wherein two hydraulic fluid ports are controlled the motion of one of them expansion link, two other hydraulic fluid port is controlled the motion of another one expansion link, and an end of one of them expansion link is fixed on described the first bridge or described the second bridge, one end of another one expansion link is connected on described the first steering track rod handle or described the second steering track rod handle.
In an embodiment of the present invention, described hydraulic power unit comprises: hydraulic reservoir has described hydraulic oil in it; At least one gear type pump, be connected with described hydraulic reservoir, described gear type pump from described hydraulic reservoir the liquid draw force feed to produce pumpdown; Wherein, the hydraulic oil of being drawn by described gear type pump is pumped to described the first oil cylinder or described the second oil cylinder via one first valve group or a second valve group.
In an embodiment of the present invention, described at least one gear type pump comprises the first gear type pump and the second gear type pump in parallel.
In an embodiment of the present invention, described the first gear type pump is connected with described second valve group with described the first valve group respectively via check valve group, by pass valve group, change-over valve group with after described the second gear type pump parallel connection, described by pass valve group also is connected with described hydraulic reservoir by a return flow line, between described by pass valve group and described change-over valve group, also is provided with a hydraulic pressure detector switch.
In an embodiment of the present invention, described check valve group at least has two input ends and a mouth, described by pass valve group at least has an input end and two mouths, described change-over valve group is comprised of two two four-way electromagnetic reversing valves and two 3-position 4-way solenoid directional control valves, and described the first valve group and described second valve group are comprised of four two four-way electromagnetic reversing valves respectively.
In an embodiment of the present invention, the described head shifter that travels that changes also comprises: emergent electric pump, with described hydraulic reservoir, with described by pass valve group, be connected, in the situation that the inefficacy of described gear type pump from described hydraulic reservoir the liquid draw force feed to carry out pumpdown.
To achieve these goals, what the present invention separately provided a kind of double end ferry bus changes the head shifter that travels, this double end ferry bus comprises the underframe with the first bridge and second bridge, be separately positioned on the first operator's compartment and second operator's compartment on the top at described underframe two ends, the first steering swivel system, the first wheels that are arranged at described the first bridge both sides and are connected with described the first bridge by described the first steering swivel system, the second steering swivel system, the second wheels that are arranged at described the second bridge both sides and are connected with described the second bridge by described the second steering swivel system, wherein said the first steering swivel system includes two the first steering hardwarees, two the first steering track rod handles and first deflecting bar, described two the first steering hardwarees are arranged at respectively the both sides of described the first bridge and are connected with described the first wheels, one end of described two the first steering track rod handles is connected with described two the first steering hardwarees respectively, the other end is connected with the two ends of described the first deflecting bar respectively, described the second steering swivel system includes two the second steering hardwarees, two the second steering track rod handles and second deflecting bar, described two the second steering hardwarees are arranged at respectively the both sides of described the second bridge and are connected with described the second wheels, one end of described two the second steering track rod handles is connected with described two the second steering hardwarees respectively, the other end is connected with the two ends of described the second deflecting bar respectively, its characteristics are, the described head shifter that travels that changes comprises: hydraulic power unit, be arranged on described underframe, and provide power by hydraulic oil, the first performance element, be connected with described the first bridge and described the first steering track rod handle, and drive and be connected with described hydraulic power unit, the second performance element, be connected with described the second bridge and described the second steering track rod handle, and drive and be connected with described hydraulic power unit, switch control unit, it includes the first change-over switch be arranged in described the first operator's compartment and the second change-over switch be arranged in described the second operator's compartment, wherein, described the first change-over switch is carried out when the first operator's compartment travels and is produced the first control signal at described double end ferry bus, controlling described hydraulic power unit by described switch control unit drives described the first performance element in active state and makes the described first round consist of driving wheel, and drive described the second performance element in locking state and make described second to take turns and consist of flower wheel, described the second wheels keep vertical in the process of moving with described the second bridge, described the second change-over switch is carried out when the second operator's compartment travels and is produced the second control signal at described double end ferry bus, controlling described hydraulic power unit by described switch control unit drives described the second performance element in active state and makes described second to take turns and consist of driving wheel, and drive described the first performance element in locking state and make the described first round consist of flower wheel, described the first wheels keep vertical in the process of moving with described the first bridge.
In another embodiment of the present invention, described the first performance element is by a left side, right two the first oil cylinders form, described the second performance element is by a left side, right two the second oil cylinders form, wherein, each oil cylinder in described the first oil cylinder and described the second oil cylinder includes the hydraulic fluid port of four described hydraulic oil turnover of confession and the expansion link of two mutually noninterferes, and wherein two hydraulic fluid ports are controlled the motion of one of them expansion link, two other hydraulic fluid port is controlled the motion of another one expansion link, and an end of one of them expansion link is fixed on described the first bridge or described the second bridge, one end of another one expansion link is connected on described the first steering track rod handle or described the second steering track rod handle.
In another embodiment of the present invention, described hydraulic power unit comprises: hydraulic reservoir has described hydraulic oil in it; At least one gear type pump, be connected with described hydraulic reservoir, described gear type pump from described hydraulic reservoir the liquid draw force feed to produce pumpdown; Wherein, the hydraulic oil of being drawn by described gear type pump is pumped to described the first oil cylinder or described the second oil cylinder via one first valve group or a second valve group.
In another embodiment of the present invention, described at least one gear type pump comprises the first gear type pump and the second gear type pump in parallel.
In another embodiment of the present invention, described the first gear type pump is connected with described second valve group with described the first valve group respectively via check valve group, by pass valve group, change-over valve group with after described the second gear type pump parallel connection, described by pass valve group also is connected with described hydraulic reservoir by a return flow line, between described by pass valve group and described change-over valve group, also is provided with a hydraulic pressure detector switch.
In another embodiment of the present invention, described check valve group at least has two input ends and a mouth, described by pass valve group at least has an input end and two mouths, described change-over valve group is comprised of two two four-way electromagnetic reversing valves and two 3-position 4-way solenoid directional control valves, and described the first valve group and described second valve group are comprised of four two four-way electromagnetic reversing valves respectively.
In another embodiment of the present invention, the head shifter that travels that changes of described double end ferry bus also comprises: emergent electric pump, with described hydraulic reservoir, with described by pass valve group, be connected, in the situation that described gear type pump loses efficacy from described hydraulic reservoir, the liquid draw force feed was to carry out pumpdown.
To achieve these goals, the present invention provide again a kind of be applied to double end ferry bus as above change the head changing method that travels, its characteristics are, comprising:
Open the first change-over switch in the first operator's compartment of double end ferry bus or the second change-over switch in the second operator's compartment, select the first operator's compartment to travel or the second operator's compartment travels, to carry out the switching of travelling of first, second operator's compartment;
When selecting the first operator's compartment to travel, described the first change-over switch produces the first control signal, controlling hydraulic power unit by switch control unit drives the first performance element in active state and makes the first round consist of driving wheel, and drive the second performance element in locking state and make second to take turns and consist of flower wheel, the second wheels keep vertical in the process of moving with the second bridge be attached thereto;
When selecting the second operator's compartment to travel, described the second change-over switch produces the second control signal, controlling hydraulic power unit by switch control unit drives the second performance element in active state and makes second to take turns and consist of driving wheel, and drive the first performance element in locking state and make the first round consist of flower wheel, the first wheels keep vertical in the process of moving with the first bridge be attached thereto.
In further embodiment of this invention, described the first performance element is by a left side, right two the first oil cylinders form, described the second performance element is by a left side, right two the second oil cylinders form, wherein, each oil cylinder in described the first oil cylinder and described the second oil cylinder includes the hydraulic fluid port of four described hydraulic oil turnover of confession and the expansion link of two mutually noninterferes, and wherein two hydraulic fluid ports are controlled the motion of one of them expansion link, two other hydraulic fluid port is controlled the motion of another one expansion link, and an end of one of them expansion link is fixed on first bridge or the second bridge of underframe of described double end ferry bus, one end of another one expansion link be connected to the first steering track rod handle of the first steering swivel system be connected with described the first bridge or the second steering track rod handle of the second steering swivel system of being connected with described the second bridge on.
In further embodiment of this invention, described hydraulic power unit is to carry out pumpdown by the first gear type pump of parallel connection and the second gear type pump, the liquid draw force feed from hydraulic reservoir by described the first gear type pump or described the second gear type pump, enter described the first valve group or described second valve group via check valve group, by pass valve group, change-over valve group, then enter respectively described the first oil cylinder or described the second oil cylinder.
In further embodiment of this invention, the described head changing method that travels that changes also comprises: travel before switching carrying out first, second operator's compartment, utilize the hydraulic pressure detector switch to detect the hydraulic pressure value between described by pass valve group and described change-over valve group, reported to the police when detected hydraulic pressure value is less than default return hydraulic pressure value, and stopped carrying out the switching that first, second operator's compartment travels.
The present invention independently changes the head shifter that travels and controls oil cylinder by adopting, thereby can control turning to and just the returning of corresponding flower wheel, locking function of corresponding driving wheel when different operator'ies compartment travel, and makes it to separate fully with the steering swivel system of car load.This changes the head shifter that travels can not have influence on the steering swivel system travelled, so not there will be the phenomenon that goes wrong and can not travel because of this device;
Left and right two first oil cylinders of the first performance element and the second performance element and left and right two the second oil cylinders in the present invention, all there are four oil nozzles, two mutually noninterferes and the expansion link that can independently control, can be so that flower wheel returns just accurate, in use flower wheel can not produce the phenomenon of sideslip, safe and reliable in driving process.
The present invention again by installing the hydraulic pressure detector switch in hydraulic efficiency pressure system, when the pressure in hydraulic efficiency pressure system can not reach the hydraulic pressure of return, there will be red indicating light to report to the police, and can stop carrying out the conversion that first, second operator's compartment travels, therefore can avoid can not completing back positive phenomenon because hydraulic pressure is not enough and occur.
The present invention changes the travel double end ferry bus of shifter of head by having, and has solved that the existing ferry bus tonnage in Civil Aviation Airport is large, oad large, travelling turns to difficulty and need the very problem of large space, has improved work efficiency; And double end ferry bus long service life of the present invention, safety factor is high, purpose easy to maintenance.
Below in conjunction with the drawings and specific embodiments, describe the present invention, but not as a limitation of the invention.
The accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is double end ferry bus contour structures schematic diagram of the present invention;
Fig. 2 is the travel structural representation of shifter of head that changes of the present invention;
Fig. 3 changes the travel structural representation of the first performance element of shifter of head in Fig. 2;
Fig. 4 be double end ferry bus of the present invention change the head changing method that travels.
The specific embodiment
As shown in Figure 1, double end ferry bus 10 of the present invention includes underframe 11, the first operator's compartment 12, the second operator's compartment 13, the first steering swivel system 140, the first wheels 14, the second steering swivel system 150 and the second wheels 15.
In conjunction with reference to figure 1 and Fig. 2, described underframe 11 comprises the first bridge 111 and the second bridge 112 that lays respectively at two ends.Described the first operator's compartment 12 and the second operator's compartment 13 are relatively arranged on the top at described underframe 11 two ends.Described the first steering swivel system 140 includes two the first steering hardware 141a and 141b, two the first steering track rod handle 142a and 142b and first deflecting bar 143, described two the first steering hardware 141a, 141b are arranged at respectively the both sides of described the first bridge 111, the end of described two the first steering track rod handle 142a, 142b is connected with described two the first steering hardware 141a, 141b respectively, and the other end is connected with the two ends of described the first deflecting bar 143 respectively.Described the first wheels 14 are arranged at the both sides of described the first bridge 111 and are connected with described the first bridge 111 by described the first steering hardware 141a, 141b respectively.Described the second steering swivel system 150 includes two the second steering hardware 151a and 151b, two the second steering track rod handle 152a and 152b and second deflecting bar 153, described two the second steering hardware 151a, 151b are arranged at respectively the both sides of described the second bridge 112, the end of described two the second steering track rod handle 152a, 152b is connected with described two the second steering hardware 151a, 151b respectively, and the other end is connected with the two ends of described the second deflecting bar 153 respectively.Described the second wheels 15 are arranged at the both sides of described the second bridge 112 and are connected with described the second bridge 112 by described the second steering hardware 151a, 151b respectively.
In the present invention, described double end ferry bus 10 also includes and independently changes the head shifter that travels, and it includes hydraulic power unit, the first performance element 30, the second performance element 40 and switch control unit (not shown).
Wherein, described hydraulic power unit can be arranged on described underframe, and provides power by hydraulic oil.Described hydraulic power unit can comprise hydraulic reservoir and at least one gear type pump.Preferably, as shown in Figure 2, described hydraulic power unit is to comprise hydraulic reservoir 21 and the first gear type pump 22 and the second gear type pump 23 in parallel.There is hydraulic oil in described hydraulic reservoir 21, described the first gear type pump 22, the second gear type pump 23 all are connected with described hydraulic reservoir 21, in order to liquid draw force feed from described hydraulic reservoir to produce pumpdown, and described the first gear type pump 22 is in parallel with described the second gear type pump 23, can realize the single output of dual input, while preventing one of them gear type pump damage, whole device still can work.
Described the first performance element 30 can be connected with two steering track rod handle 142a, 142b of described the first bridge 111 and described the first steering swivel system 140, and drives and be connected with described hydraulic power unit.In an embodiment of the present invention, please in conjunction with reference to shown in figure 3, described the first performance element 30 for example can be by a left side, right two the first oil cylinders 301, 302 form, each first oil cylinder 301 (302) includes a simplified 30a, the hydraulic fluid port 36～39 of four described hydraulic oil turnover of confession and the expansion link 31 of two mutually noninterferes, 32, wherein this cylindrical shell 30a is divided into two independently chamber 30b and 30c, wherein hydraulic fluid port 36, 37 are communicated with chamber 30c, hydraulic fluid port 38, 39 are communicated with chamber 30b, and expansion link 32, 31 are placed in respectively described chamber 30b, in 30c, can pass through respectively hydraulic fluid port 36 like this, 37 control the motion of expansion link 31, by hydraulic fluid port 38, 39 control the motion of expansion link 32.For example, by hydraulic fluid port 36 oil-feeds, the fuel-displaced control expansion link 31 of hydraulic fluid port 37, retract, stretch out by hydraulic fluid port 37 oil-feeds, the fuel-displaced control expansion link 31 of hydraulic fluid port 36; Retract by hydraulic fluid port 39 oil-feeds, the fuel-displaced control expansion link 32 of hydraulic fluid port 38, stretch out by hydraulic fluid port 38 oil-feeds, the fuel-displaced control expansion link 32 of hydraulic fluid port 39.
In the embodiment shown in Fig. 2 and Fig. 3, an end of one of them expansion link 31 of left the first oil cylinder 301 can be fixed on described the first bridge 111, and an end of another one expansion link 32 can be connected on the first steering track rod handle 142a in left side; One end of one of them expansion link 32 of right the first oil cylinder 302 can be fixed on described the first bridge 111, and an end of another one expansion link 31 is connected on the first steering track rod handle 142b on right side.
In the present invention, described the second performance element 40 is connected with the second steering track rod handle 152a, the 152b of described the second bridge 112 and described the second steering swivel system, and drives and be connected with described hydraulic power unit.Described the second performance element 40 for example also can be comprised of left and right two the second oil cylinders, and the structure of the first performance element 30 shown in its structure and Fig. 3 is similar, does not repeat them here.
In a preferred embodiment of the present invention, as shown in Figure 3, described the first gear type pump 22 for example can be connected with described second valve group F2 with described the first valve group F1 respectively via check valve group 24, by pass valve group 25, change-over valve group with after described the second gear type pump 23 parallel connections.Described check valve group 24 at least has two input ends and a mouth, is the unidirectional output of two-way input, and the hydraulic oil that described the first gear type pump 22 or the second gear type pump 23 are drawn can be inputted from corresponding input end, and is exported by mouth.Described by pass valve group 25 is automatic valves, and it be communicated to described change-over valve group under normal circumstances in conducting state, and at system pressure excessive (flooded conditions occurs) but the time automatic oil discharge.Described by pass valve group 25 at least has an input end and two mouths, the hydraulic oil of being exported by the mouth of described check valve group 24 is by the input end input of described by pass valve group 25, and can export described change-over valve group to by one of them mouth under normal circumstances, to carry out normal pumpdown; The another one mouth can be connected with described hydraulic reservoir 21 by a return flow line L252, this return flow line L252, under normal circumstances in closed condition, only opens to realize automatic oil discharge in system pressure excessive (flooded conditions occurs) time side.
Described change-over valve group can be comprised of a plurality of solenoid directional control valves, in order to the hydraulic oil that will be exported by one of them mouth of described by pass valve group 25, after commutation, inputs respectively in the first valve group F1 and second valve group F2.In the embodiment shown in fig. 3, described change-over valve group for example can be comprised of four two four-way electromagnetic reversing valves 61～64 and two 3-position 4-way solenoid directional control valves 71～72, and described the first valve group F1 for example can be comprised of four two four-way electromagnetic reversing valve F1-1～F1-4, described second valve group F2 for example can be comprised of four two four-way electromagnetic reversing valve F2-1～F2-4.By the control to each solenoid directional control valve in described the first valve group F1, described second valve group F2 and described change-over valve group, coordinate being connected of each solenoid directional control valve in described the first valve group F1, described second valve group F2 and each hydraulic fluid port in described the first performance element 30, the second performance element 40, can carry out independent control to two expansion links of each oil cylinder in described the first performance element 30, the second performance element 40.
In the present invention, also be provided with a hydraulic pressure detector switch 26 between described by pass valve group 25 and described change-over valve group, for example be arranged on by pass valve group 25 and the change-over valve group that is connected with its mouth in solenoid directional control valve 61 between to detect hydraulic pressure value therebetween.Also can further install indicator lamp additional, when detected hydraulic pressure value is less than default return hydraulic pressure value, there will be red indicating light, reported to the police, and stop carrying out the switching that first, second operator's compartment travels, therefore can just can not complete back because hydraulic pressure is not enough.
In another embodiment of the present invention, the described head shifter that travels that changes also can comprise emergent electric pump 27, with described hydraulic reservoir 21, with described by pass valve group 25, be connected, in the situation that described the first gear type pump 22 and the second gear type pump 23 lost efficacy can be from described hydraulic reservoir 21 the liquid draw force feed to carry out pumpdown.
In other embodiment of the present invention, the solenoid directional control valve F1-4 in the 3-position 4-way solenoid directional control valve 71 and 72 in described check valve group 24, described change-over valve group, described the first valve group F1 and the solenoid directional control valve F2-1 in described second valve group F2 all can be communicated to described hydraulic reservoir 21 by return flow line L242, L712, L722, D507, D601 respectively.
In the present invention, described hydraulic reservoir, gear type pump, check valve group, by pass valve group, change-over valve group, the first valve group, second valve group, the first oil cylinder and the second oil cylinder have formed an independently hydraulic efficiency pressure system.In other embodiment of the present invention, can also in this hydraulic efficiency pressure system, increase the parts such as protection valve, to protect the normal operation of this hydraulic efficiency pressure system, improve the reliability of this hydraulic efficiency pressure system.And, being understandable that, each valve group in this hydraulic efficiency pressure system is not limited to structure and the connection mode of above-described embodiment, and those skilled in the art are according to actual design when changing accordingly, and these are not as limitation of the present invention.
In the present invention, described switch control unit includes the first change-over switch be arranged in the first operator's compartment 12 and the second change-over switch be arranged in described the second operator's compartment 13, described the first change-over switch, the second change-over switch for example can be the power key switch, are changing when operator's compartment travels the power key switch that can open the power key switch of corresponding operator's compartment and close another operator's compartment.
As shown in Figure 4, what it showed double end ferry bus of the present invention changes the head changing method that travels, and it comprises:
Open the first change-over switch in the first operator's compartment of double end ferry bus or the second change-over switch in the second operator's compartment, select the first operator's compartment to travel or the second operator's compartment travels, to carry out the switching of travelling of first, second operator's compartment.
When selecting the first operator's compartment to travel, described the first change-over switch produces the first control signal, thereby controlling hydraulic power unit by switch control unit drives the first performance element to make the first round consist of driving wheel in active state, thereby and drive the second performance element to make second to take turns and consist of flower wheel in locking state, the second wheels keep vertical in the process of moving with the second bridge be attached thereto, so that flower wheel (the second wheels) keeps straight-line travelling, thereby guarantee better driving safety.Specifically, when described double end ferry bus is carried out the first operator's compartment driving functions, the first performance element is in active state, and the first round consists of driving wheel, and the second performance element is in locking state, and second takes turns and consist of flower wheel: now left and right the first oil cylinder on the first bridge is all in active state, and the expansion link in left and right the first oil cylinder can be movable under the drive of described the first bridge, described the first steering track rod handle; A left side the second oil cylinder on the second bridge returns just locked, and the expansion link that the expansion link that in left the second oil cylinder, is connected to the second bridge reaches end position, be connected to left side the second steering hardware is retracted into end position; The right side the second oil cylinder on the second bridge returns just locked, and the expansion link that the expansion link that in right the second oil cylinder, is connected to right side the second steering hardware is retracted into end position, be connected to the second bridge reaches end position, thereby makes the second wheels and the second bridge keep vertical.
When selecting the second operator's compartment to travel, described the second change-over switch produces the second control signal, controlling hydraulic power unit by switch control unit drives the second performance element in active state and makes second to take turns and consist of driving wheel, and drive the first performance element in locking state and make the first round consist of flower wheel, the first wheels keep vertical in the process of moving with the first bridge be attached thereto.Specifically, when described double end ferry bus is carried out the second operator's compartment driving functions, its second performance element is in active state, and second takes turns and consists of driving wheel, and the first performance element is in locking state, and the first round consists of flower wheel: now left and right second oil cylinder of the second wheels is all in active state, and the expansion link in left and right the second oil cylinder can be movable under the drive of described the second bridge, described the second steering track rod handle; A left side the first oil cylinder on the first bridge returns just locked, and the expansion link that the expansion link that in left the first oil cylinder, is connected to the first bridge reaches end position, be connected to left side the first steering hardware is retracted into end position; The right side the first oil cylinder on the first bridge returns just locked, and the expansion link that the expansion link that in right the first oil cylinder, is connected to right side the first steering hardware is retracted into end position, be connected to the first bridge reaches end position, thereby makes the first wheels and the first bridge keep vertical.
The present invention independently changes the head shifter that travels and controls oil cylinder by adopting, thereby can control turning to and just the returning of corresponding flower wheel, locking function of corresponding driving wheel when different operator'ies compartment travel, and makes it to separate fully with the steering swivel system of car load.This changes the head shifter that travels can not have influence on the steering swivel system travelled, so not there will be the phenomenon that goes wrong and can not travel because of this device;
Left and right two first oil cylinders of the first performance element and the second performance element and left and right two the second oil cylinders in the present invention, all there are four oil nozzles, two mutually noninterferes and the expansion link that can independently control, can be so that flower wheel returns just accurate, in use flower wheel can not produce the phenomenon of sideslip, safe and reliable in driving process.
The present invention again by installing the hydraulic pressure detector switch in hydraulic efficiency pressure system, when the pressure in hydraulic efficiency pressure system can not reach the hydraulic pressure of return, there will be red indicating light to report to the police, and can stop carrying out the conversion that first, second operator's compartment travels, therefore can avoid can not completing back positive phenomenon because hydraulic pressure is not enough and occur.
The present invention changes the travel double end ferry bus of shifter of head by having, solved that the existing ferry bus tonnage in Civil Aviation Airport is large, oad large, travelling turns to difficult problem, improved work efficiency, and reduced stroke, reduce the loss to tire, thereby reduced the maintenance cost to tire.
Certainly; the present invention also can have other various embodiments; in the situation that do not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art are when making according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (18)
1. a double end ferry bus, described double end ferry bus comprises:
Underframe, described underframe comprises the first bridge and the second bridge that lays respectively at two ends;
The first operator's compartment and the second operator's compartment, be relatively arranged on the top at described underframe two ends;
The first steering swivel system, it includes two the first steering hardwarees, two the first steering track rod handles and first deflecting bar, described two the first steering hardwarees are arranged at respectively the both sides of described the first bridge, one end of described two the first steering track rod handles is connected with described two the first steering hardwarees respectively, and the other end is connected with the two ends of described the first deflecting bar respectively;
The first wheels, be arranged at the both sides of described the first bridge and be connected with described the first bridge by described the first steering hardware respectively;
The second steering swivel system, it includes two the second steering hardwarees, two the second steering track rod handles and second deflecting bar, described two the second steering hardwarees are arranged at respectively the both sides of described the second bridge, one end of described two the second steering track rod handles is connected with described two the second steering hardwarees respectively, and the other end is connected with the two ends of described the second deflecting bar respectively;
The second wheels, be arranged at the both sides of described the second bridge and be connected with described the second bridge by described the second steering hardware respectively;
It is characterized in that, described double end ferry bus also includes and independently changes the head shifter that travels, and it comprises:
Hydraulic power unit, be arranged on described underframe, and provide power by hydraulic oil;
The first performance element, be connected with described the first bridge and described the first steering track rod handle, and drive and be connected with described hydraulic power unit;
The second performance element, be connected with described the second bridge and described the second steering track rod handle, and drive and be connected with described hydraulic power unit;
Switch control unit, it includes the first change-over switch be arranged in described the first operator's compartment and the second change-over switch be arranged in described the second operator's compartment, wherein, described the first change-over switch is carried out when the first operator's compartment travels and is produced the first control signal at described double end ferry bus, controlling described hydraulic power unit by described switch control unit drives described the first performance element in active state and makes the described first round consist of driving wheel, and drive described the second performance element in locking state and make described second to take turns and consist of flower wheel, described the second wheels keep vertical in the process of moving with described the second bridge, described the second change-over switch is carried out when the second operator's compartment travels and is produced the second control signal at described double end ferry bus, controlling described hydraulic power unit by described switch control unit drives described the second performance element in active state and makes described second to take turns and consist of driving wheel, and drive described the first performance element in locking state and make the described first round consist of flower wheel, described the first wheels keep vertical in the process of moving with described the first bridge.
2. double end ferry bus according to claim 1, it is characterized in that, described the first performance element is by a left side, right two the first oil cylinders form, described the second performance element is by a left side, right two the second oil cylinders form, wherein, each oil cylinder in described the first oil cylinder and described the second oil cylinder includes the hydraulic fluid port of four described hydraulic oil turnover of confession and the expansion link of two mutually noninterferes, and wherein two hydraulic fluid ports are controlled the motion of one of them expansion link, two other hydraulic fluid port is controlled the motion of another one expansion link, and an end of one of them expansion link is fixed on described the first bridge or described the second bridge, one end of another one expansion link is connected on described the first steering track rod handle or described the second steering track rod handle.
3. double end ferry bus according to claim 2, is characterized in that, described hydraulic power unit comprises:
Hydraulic reservoir, have described hydraulic oil in it;
At least one gear type pump, be connected with described hydraulic reservoir, described gear type pump from described hydraulic reservoir the liquid draw force feed to produce pumpdown;
Wherein, the hydraulic oil of being drawn by described gear type pump is pumped to described the first oil cylinder or described the second oil cylinder via one first valve group or a second valve group.
4. double end ferry bus according to claim 3, is characterized in that, described at least one gear type pump comprises the first gear type pump and the second gear type pump in parallel.
5. double end ferry bus according to claim 4, it is characterized in that, described the first gear type pump is connected with described second valve group with described the first valve group respectively via check valve group, by pass valve group, change-over valve group with after described the second gear type pump parallel connection, described by pass valve group also is connected with described hydraulic reservoir by a return flow line, between described by pass valve group and described change-over valve group, also is provided with a hydraulic pressure detector switch.
6. double end ferry bus according to claim 5, it is characterized in that, described check valve group at least has two input ends and a mouth, described by pass valve group at least has an input end and two mouths, described change-over valve group is comprised of two two four-way electromagnetic reversing valves and two 3-position 4-way solenoid directional control valves, and described the first valve group and described second valve group are comprised of four two four-way electromagnetic reversing valves respectively.
7. double end ferry bus according to claim 6, is characterized in that, the described head shifter that travels that changes also comprises:
Emergent electric pump, be connected with described by pass valve group with described hydraulic reservoir, in the situation that the inefficacy of described gear type pump from described hydraulic reservoir the liquid draw force feed to carry out pumpdown.
8. a double end ferry bus changes the head shifter that travels, this double end ferry bus comprises the underframe with the first bridge and second bridge, be separately positioned on the first operator's compartment and second operator's compartment on the top at described underframe two ends, the first steering swivel system, the first wheels that are arranged at described the first bridge both sides and are connected with described the first bridge by described the first steering swivel system, the second steering swivel system, the second wheels that are arranged at described the second bridge both sides and are connected with described the second bridge by described the second steering swivel system, wherein said the first steering swivel system includes two the first steering hardwarees, two the first steering track rod handles and first deflecting bar, described two the first steering hardwarees are arranged at respectively the both sides of described the first bridge and are connected with described the first wheels, one end of described two the first steering track rod handles is connected with described two the first steering hardwarees respectively, the other end is connected with the two ends of described the first deflecting bar respectively, described the second steering swivel system includes two the second steering hardwarees, two the second steering track rod handles and second deflecting bar, described two the second steering hardwarees are arranged at respectively the both sides of described the second bridge and are connected with described the second wheels, one end of described two the second steering track rod handles is connected with described two the second steering hardwarees respectively, the other end is connected with the two ends of described the second deflecting bar respectively, it is characterized in that, the described head shifter that travels that changes comprises:
Hydraulic power unit, be arranged on described underframe, and provide power by hydraulic oil;
The first performance element, be connected with described the first bridge and described the first steering track rod handle, and drive and be connected with described hydraulic power unit;
The second performance element, be connected with described the second bridge and described the second steering track rod handle, and drive and be connected with described hydraulic power unit;
Switch control unit, it includes the first change-over switch be arranged in described the first operator's compartment and the second change-over switch be arranged in described the second operator's compartment, wherein, described the first change-over switch is carried out when the first operator's compartment travels and is produced the first control signal at described double end ferry bus, controlling described hydraulic power unit by described switch control unit drives described the first performance element in active state and makes the described first round consist of driving wheel, and drive described the second performance element in locking state and make described second to take turns and consist of flower wheel, described the second wheels keep vertical in the process of moving with described the second bridge, described the second change-over switch is carried out when the second operator's compartment travels and is produced the second control signal at described double end ferry bus, controlling described hydraulic power unit by described switch control unit drives described the second performance element in active state and makes described second to take turns and consist of driving wheel, and drive described the first performance element in locking state and make the described first round consist of flower wheel, described the first wheels keep vertical in the process of moving with described the first bridge.
9. double end ferry bus according to claim 8 changes the head shifter that travels, it is characterized in that, described the first performance element is by a left side, right two the first oil cylinders form, described the second performance element is by a left side, right two the second oil cylinders form, wherein, each oil cylinder in described the first oil cylinder and described the second oil cylinder includes the hydraulic fluid port of four described hydraulic oil turnover of confession and the expansion link of two mutually noninterferes, and wherein two hydraulic fluid ports are controlled the motion of one of them expansion link, two other hydraulic fluid port is controlled the motion of another one expansion link, and an end of one of them expansion link is fixed on described the first bridge or described the second bridge, one end of another one expansion link is connected on described the first steering track rod handle or described the second steering track rod handle.
Double end ferry bus according to claim 9 change the head shifter that travels, it is characterized in that, described hydraulic power unit comprises:
Hydraulic reservoir, have described hydraulic oil in it;
At least one gear type pump, be connected with described hydraulic reservoir, described gear type pump from described hydraulic reservoir the liquid draw force feed to produce pumpdown;
Wherein, the hydraulic oil of being drawn by described gear type pump is pumped to described the first oil cylinder or described the second oil cylinder via one first valve group or a second valve group.
11. double end ferry bus according to claim 10 change the head shifter that travels, it is characterized in that, described at least one gear type pump comprises the first gear type pump and the second gear type pump in parallel.
12. double end ferry bus according to claim 11 change the head shifter that travels, it is characterized in that, described the first gear type pump is connected with described second valve group with described the first valve group respectively via check valve group, by pass valve group, change-over valve group with after described the second gear type pump parallel connection, described by pass valve group also is connected with described hydraulic reservoir by a return flow line, between described by pass valve group and described change-over valve group, also is provided with a hydraulic pressure detector switch.
13. double end ferry bus according to claim 12 change the head shifter that travels, it is characterized in that, described check valve group at least has two input ends and a mouth, described by pass valve group at least has an input end and two mouths, described change-over valve group is comprised of two two four-way electromagnetic reversing valves and two 3-position 4-way solenoid directional control valves, and described the first valve group and described second valve group are comprised of four two four-way electromagnetic reversing valves respectively.
14. double end ferry bus according to claim 11 change the head shifter that travels, it is characterized in that, also comprise:
Emergent electric pump, be connected with described by pass valve group with described hydraulic reservoir, in the situation that the inefficacy of described gear type pump from described hydraulic reservoir the liquid draw force feed to carry out pumpdown.
15. one kind be applied to as the described double end ferry bus of arbitrary claim in claim 1～7 change the head changing method that travels, it is characterized in that, comprising:
Open the first change-over switch in the first operator's compartment of double end ferry bus or the second change-over switch in the second operator's compartment, select the first operator's compartment to travel or the second operator's compartment travels, to carry out the switching of travelling of first, second operator's compartment;
When selecting the first operator's compartment to travel, described the first change-over switch produces the first control signal, controlling hydraulic power unit by switch control unit drives the first performance element in active state and makes the first round consist of driving wheel, and drive the second performance element in locking state and make second to take turns and consist of flower wheel, the second wheels keep vertical in the process of moving with the second bridge be attached thereto;
When selecting the second operator's compartment to travel, described the second change-over switch produces the second control signal, controlling hydraulic power unit by switch control unit drives the second performance element in active state and makes second to take turns and consist of driving wheel, and drive the first performance element in locking state and make the first round consist of flower wheel, the first wheels keep vertical in the process of moving with the first bridge be attached thereto.
Change the head changing method that travels 16. according to claim 15, it is characterized in that, described the first performance element is by a left side, right two the first oil cylinders form, described the second performance element is by a left side, right two the second oil cylinders form, wherein, each oil cylinder in described the first oil cylinder and described the second oil cylinder includes the hydraulic fluid port of four described hydraulic oil turnover of confession and the expansion link of two mutually noninterferes, and wherein two hydraulic fluid ports are controlled the motion of one of them expansion link, two other hydraulic fluid port is controlled the motion of another one expansion link, and an end of one of them expansion link is fixed on first bridge or the second bridge of underframe of described double end ferry bus, one end of another one expansion link be connected to the first steering track rod handle of the first steering swivel system be connected with described the first bridge or the second steering track rod handle of the second steering swivel system of being connected with described the second bridge on.
Change the head changing method that travels 17. according to claim 16, it is characterized in that, described hydraulic power unit is to carry out pumpdown by the first gear type pump of parallel connection and the second gear type pump, the liquid draw force feed from hydraulic reservoir by described the first gear type pump or described the second gear type pump, enter described the first valve group or described second valve group via check valve group, by pass valve group, change-over valve group, then enter respectively described the first oil cylinder or described the second oil cylinder.
Change the head changing method that travels 18. according to claim 15, it is characterized in that, also comprise:
Carry out first, second operator's compartment travel the switching before, utilize the hydraulic pressure detector switch to detect the hydraulic pressure value between described by pass valve group and described change-over valve group, reported to the police when detected hydraulic pressure value is less than default return hydraulic pressure value, and stopped carrying out the switching that first, second operator's compartment travels.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210185939.0A CN103465974B (en) | 2012-06-07 | 2012-06-07 | A kind of double end ferry bus and change head and travel shifter and method |
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| CN201210185939.0A CN103465974B (en) | 2012-06-07 | 2012-06-07 | A kind of double end ferry bus and change head and travel shifter and method |
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| CN103465974B CN103465974B (en) | 2015-10-14 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP0308574A1 (en) * | 1987-06-26 | 1989-03-29 | Al-Ko Kober Ag | Arrangement for transporting the steering and engine units of automotive front-driven special purpose motor vehicles |
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Effective date of registration: 20210616 Address after: 102206 b4061, building 8, No. 97, Changping Road, Shahe Town, Changping District, Beijing (Changping Demonstration Park) Patentee after: XINFA AIRPORT EQUIPMENT Ltd. Patentee after: LANGFANG CIMC AIRPORT EQUIPMENT Co.,Ltd. Patentee after: SHENZHEN CIMC-TIANDA AIRPORT SUPPORT Co.,Ltd. Address before: 102206 Building 5, 97 Changping Road, Shahe Town, Changping District, Beijing Patentee before: XINFA AIRPORT EQUIPMENT Ltd. Patentee before: China International Marine Containers (Group) Co.,Ltd. Patentee before: SHENZHEN CIMC-TIANDA AIRPORT SUPPORT Co.,Ltd. |