CN203611746U - Hydraulic travelling open-type system for forklift truck with double driving cabs - Google Patents
Hydraulic travelling open-type system for forklift truck with double driving cabs Download PDFInfo
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- CN203611746U CN203611746U CN201320662970.9U CN201320662970U CN203611746U CN 203611746 U CN203611746 U CN 203611746U CN 201320662970 U CN201320662970 U CN 201320662970U CN 203611746 U CN203611746 U CN 203611746U
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Abstract
The utility model relates to a hydraulic travelling open-type system for a forklift truck with double driving cabs. The hydraulic travelling open-type system comprises a main hydraulic system and a hydraulic control system, wherein the main hydraulic system comprises a hydraulic oil tank, a variable pump, a system overflow valve, a monostable diverter valve, a two-position four-way magnetic exchange valve, a three-position four-way pilot operated directional control valve, a front travel motor and a rear travel motor; the hydraulic control system comprises a main driving pedal type two-position three-way pilot valve, an auxiliary driving pedal type two-position three-way pilot valve, a main driving three-position four-way hand-directional valve, an auxiliary driving three-position four-way hand-directional valve and a shuttle valve. A working system of switching one single motor and double motors is adopted to realize the switching between the working conditions of walking on the flat ground and climbing, of a side forklift truck with the double driving cabs, so that the problems that the side forklift truck with the double driving cabs demands high speed in the process of driving on the flat ground and demands large driving moment in the process of climbing can be solved; furthermore, a hydraulic controlled pilot technology is utilized so that hydraulic control valves which control an automobile to travel can be more conveniently arranged in the driving cabs, so that the hydraulic travelling open-type system accords with the driving habit of operators.
Description
Technical field
The utility model belongs to fork truck technical field, is specifically related to carry for tunnel, ring road the side fork lift truck of long strip type goods.
Background technology
Certain extraordinary side fork lift truck is carried long strip type goods for tunnel, ring road, because causing vehicle cannot turn headstock, the space constraint of operating environment travels, as adopt reverse travel, can be because the visual field of chaufeur is bad, very easily cause vehicle and wall collision, therefore, need to operator's compartment be set respectively at vehicle two ends and carry out vehicle control, double-cab requires all to realize vehicle to run at two operator'ies compartment and handles.In two operator'ies compartment of existing double-cab fork truck, a set of independently driving system is set respectively, every cover independently driving system all comprises a controllable capacity pump, a main by pass valve, two running motors, two main control valves.Car load hydraulic travel system manufacturing cost is higher.
Utility model content
In order to solve the high problem of hydraulic travel system manufacturing cost of existing double-cab fork truck, the utility model provides a kind of simple in structure by structural development, good reliability, and meet navigating mate driving manipulation custom, for the hydraulic moving open-circuit system of double-cab fork truck.
Comprise main hydraulic system for the hydraulic moving open-circuit system of double-cab fork truck, described main hydraulic system comprises hydraulic reservoir 1, controllable capacity pump 2, system by pass valve 4, monostable flow divider valve 5, two four-way electromagnetic reversing valves 8,3-position 4-way pilot operated directional control valve 9, front running motor 12 and after running motors 13; The oil suction Q1 mouth of described controllable capacity pump 2 and pump housing release T1 mouth are being communicated with respectively fuel tank, and the oil-feed P1 mouth of controllable capacity pump 2 is communicated with the oil-feed P2 mouth of system by pass valve 4, the oil-feed P3 mouth of monostable flow divider valve 5 respectively by three-way pipe; The oil return T2 mouth of system by pass valve 4 is communicated with fuel tank; Monostable flow divider valve 5 has unstable state shunting A3 mouth and stable state shunting B3 mouth; The unstable state shunting A3 mouth of monostable flow divider valve 5 is being communicated with respectively the oil-feed P4 mouth of 3-position 4-way pilot operated directional control valve 9 and the feedback of controllable capacity pump 2 oil LS mouth by three-way pipe; The oil return T4 mouth of 3-position 4-way pilot operated directional control valve 9 is being communicated with fuel tank; The first work A5 mouth of running motor 12 and the first work A1 mouth of two four-way electromagnetic reversing valves 8 before the first work A4 mouth of 3-position 4-way pilot operated directional control valve 9 is being communicated with respectively by three-way pipe; The second work B5 mouth of running motor 12 and the second work B1 mouth of two four-way electromagnetic reversing valves 8 before the second work B4 mouth of 3-position 4-way pilot operated directional control valve 9 is being communicated with respectively by three-way pipe; The release T5 mouth of front running motor 12 is being communicated with fuel tank; The 3rd work C1 mouth of two four-way electromagnetic reversing valves 8 is being communicated with the first work A6 mouth of after running motor 13, and the 4th work D1 mouth of two four-way electromagnetic reversing valves 8 is being communicated with the second work B6 mouth of after running motor 13; The release T6 mouth of after running motor 13 is being communicated with fuel tank;
Also comprise hydraulic control system, described hydraulic control system comprises that master drives pedal type two-bit triplet priority valve 16 and the passenger side pedal type two-bit triplet priority valve 17, master drive 3-position 4-way hand change over valve 18, the passenger side 3-position 4-way hand change over valve 19, shuttle valve 20 and shuttle valve 21; The stable state shunting B3 mouth of described monostable flow divider valve 5 is being communicated with respectively main drive the oil-feed E1 mouth of pedal type two-bit triplet priority valve 16 and the oil-feed E2 mouth of the passenger side pedal type two-bit triplet priority valve 17 by three-way pipe; The working oil F1 mouth that described master drives pedal type two-bit triplet priority valve 16 is being communicated with the main oil-feed J1 mouth of driving 3-position 4-way hand change over valve 18, and the main oil return G1 mouth of driving pedal type two-bit triplet priority valve 16 is communicated with main oil return K1 mouth and the fuel tank of driving 3-position 4-way hand change over valve 18 respectively by three-way pipe; The first work M1 mouth that described master drives 3-position 4-way hand change over valve 18 is being communicated with the first oil-feed U2 mouth of shuttle valve 21, and main the second work N1 mouth of driving 3-position 4-way hand change over valve 18 is being communicated with the first oil inlet U1 of shuttle valve 20; The work F2 mouth of described the passenger side pedal type two-bit triplet priority valve 17 is being communicated with the oil-feed J2 mouth of the passenger side 3-position 4-way hand change over valve 19, and the oil return G2 mouth of the passenger side pedal type two-bit triplet priority valve 17 is being communicated with respectively oil return K2 mouth and the fuel tank of the passenger side 3-position 4-way hand change over valve 19 by three-way pipe; The first actuator port M2 of described the passenger side 3-position 4-way hand change over valve 19 is being communicated with the second oil-feed V1 mouth of shuttle valve 20, and the second working oil N2 mouth of the passenger side 3-position 4-way hand change over valve 19 is being communicated with the second oil-feed V2 mouth of shuttle valve 21; The fuel-displaced W1 mouth of shuttle valve 20 is being communicated with first of described 3-position 4-way pilot operated directional control valve 9 and is controlling oily X mouth, and the fuel-displaced W2 mouth of shuttle valve 21 is being communicated with second of described 3-position 4-way pilot operated directional control valve 9 and is controlling oily Y mouth.
The stable state shunting B3 mouth of described monostable flow divider valve 5 is provided with controlling water kick valve.
Useful technique effect of the present utility model embodies in the following areas:
1. the driving that the utility model uses a set of integrated hydraulic moving open-circuit system to realize double-cab side fork lift truck is handled; Adopt single double motor switch operating system, realized the switching with climbing operating mode at level walking of double-cab side fork lift truck, solved double-cab side fork lift truck level land while travelling rate request high, and when climbing, the problem that demanded drive torque is large;
2. the utility model uses hydraulic control frontier technology, makes to control the operator's compartment that is arranged in that the fluid control valve of vehicle to run can be convenient, meets the driving habit of operating personal;
3. the utility model is simple in structure, good economy performance, and reliability is high.
Accompanying drawing explanation
Fig. 1 is the utility model system architecture schematic diagram.
Sequence number in upper figure: hydraulic reservoir 1, controllable capacity pump 2, system by pass valve 4, monostable flow divider valve 5, two four-way electromagnetic reversing valves 8,3-position 4-way pilot operated directional control valve 9, front running motor 12, after running motor 13, main pedal type two-bit triplet priority valve 16, the passenger side pedal type two-bit triplet priority valve 17, main 3-position 4-way hand change over valve 18, the passenger side 3-position 4-way hand change over valve 19, shuttle valve 20 and the shuttle valve 21 driven driven.
The specific embodiment
Below in conjunction with accompanying drawing, by embodiment, the utility model is further described.
Embodiment:
Referring to Fig. 1, comprise main hydraulic system for the hydraulic moving open-circuit system of double-cab fork truck, described main hydraulic system comprises hydraulic reservoir 1, controllable capacity pump 2, system by pass valve 4, monostable flow divider valve 5, two four-way electromagnetic reversing valves 8,3-position 4-way pilot operated directional control valve 9, front running motor 12 and after running motors 13; The oil suction Q1 mouth of described controllable capacity pump 2 and pump housing release T1 mouth are being communicated with respectively fuel tank, and the oil-feed P1 mouth of controllable capacity pump 2 is communicated with the oil-feed P2 mouth of system by pass valve 4, the oil-feed P3 mouth of monostable flow divider valve 5 respectively by three-way pipe; The oil return T2 mouth of system by pass valve 4 is communicated with fuel tank; Monostable flow divider valve 5 has unstable state shunting A3 mouth and stable state shunting B3 mouth; The unstable state shunting A3 mouth of monostable flow divider valve 5 is being communicated with respectively the oil-feed P4 mouth of 3-position 4-way pilot operated directional control valve 9 and the feedback of controllable capacity pump 2 oil LS mouth by three-way pipe; The oil return T4 mouth of 3-position 4-way pilot operated directional control valve 9 is being communicated with fuel tank; The first work A5 mouth of running motor 12 and the first work A1 mouth of two four-way electromagnetic reversing valves 8 before the first work A4 mouth of 3-position 4-way pilot operated directional control valve 9 is being communicated with respectively by three-way pipe; The second work B5 mouth of running motor 12 and the second work B1 mouth of two four-way electromagnetic reversing valves 8 before the second work B4 mouth of 3-position 4-way pilot operated directional control valve 9 is being communicated with respectively by three-way pipe; The release T5 mouth of front running motor 12 is being communicated with fuel tank; The 3rd work C1 mouth of two four-way electromagnetic reversing valves 8 is being communicated with the first work A6 mouth of after running motor 13, and the 4th work D1 mouth of two four-way electromagnetic reversing valves 8 is being communicated with the second work B6 mouth of after running motor 13; The release T6 mouth of after running motor 13 is being communicated with fuel tank;
Also comprise hydraulic control system, hydraulic control system comprises that master drives pedal type two-bit triplet priority valve 16 and the passenger side pedal type two-bit triplet priority valve 17, master drive 3-position 4-way hand change over valve 18, the passenger side 3-position 4-way hand change over valve 19, shuttle valve 20 and shuttle valve 21; The stable state shunting B3 mouth of described monostable flow divider valve 5 is being communicated with respectively main drive the oil-feed E1 mouth of pedal type two-bit triplet priority valve 16 and the oil-feed E2 mouth of the passenger side pedal type two-bit triplet priority valve 17 by three-way pipe; The working oil F1 mouth that described master drives pedal type two-bit triplet priority valve 16 is being communicated with the main oil-feed J1 mouth of driving 3-position 4-way hand change over valve 18, and the main oil return G1 mouth of driving pedal type two-bit triplet priority valve 16 is communicated with main oil return K1 mouth and the fuel tank of driving 3-position 4-way hand change over valve 18 respectively by three-way pipe; The first work M1 mouth that described master drives 3-position 4-way hand change over valve 18 is being communicated with the first oil-feed U2 mouth of shuttle valve 21, and main the second work N1 mouth of driving 3-position 4-way hand change over valve 18 is being communicated with the first oil inlet U1 of shuttle valve 20; The work F2 mouth of described the passenger side pedal type two-bit triplet priority valve 17 is being communicated with the oil-feed J2 mouth of the passenger side 3-position 4-way hand change over valve 19, and the oil return G2 mouth of the passenger side pedal type two-bit triplet priority valve 17 is being communicated with respectively oil return K2 mouth and the fuel tank of the passenger side 3-position 4-way hand change over valve 19 by three-way pipe; The first actuator port M2 of described the passenger side 3-position 4-way hand change over valve 19 is being communicated with the second oil-feed V1 mouth of shuttle valve 20, and the second working oil N2 mouth of the passenger side 3-position 4-way hand change over valve 19 is being communicated with the second oil-feed V2 mouth of shuttle valve 21; The fuel-displaced W1 mouth of shuttle valve 20 is being communicated with first of described 3-position 4-way pilot operated directional control valve 9 and is controlling oily X mouth, and the fuel-displaced W2 mouth of shuttle valve 21 is being communicated with second of described 3-position 4-way pilot operated directional control valve 9 and is controlling oily Y mouth.
The stable state shunting B3 mouth of monostable flow divider valve 5 is provided with controlling water kick valve, and hydraulic control system is protected.
Described two four-way electromagnetic reversing valves 8, in the time of electromagnet no power, the first work A1 mouth, the second work B1 mouth is all in off-state, and the 3rd work C1 mouth is communicated with the 4th work D1 mouth; In the time that electromagnet is switched on, the first work A1 mouth and the 3rd work C1 mouth are connected, and the second working oil B1 mouth and the 4th work D1 mouth are connected.Its Main Function is to realize single motor walking to switch with the function of double motor walking.
Described 3-position 4-way pilot operated directional control valve 9, in the time that the first control oil X mouth, second is controlled oily Y mouth all without pressure, switches to meta, and its oil-feed P4 mouth, oil return T4 mouth, the first work A4 mouth and the second work B4 mouth are all communicated with.In the time that the first control oil X mouth has pressure, switch to left position, oil-feed P4 mouth and the first work A4 mouth are connected, and oil return T4 mouth and the second work B4 mouth are connected; In the time that the second control oil Y mouth has pressure, switch to right position, oil-feed P4 mouth and the second work B4 mouth are connected, and oil return T4 mouth and the first work A4 mouth are connected; Its Main Function is that the direction of travel that advances with retreat of realizing vehicle switches.
Described master drives pedal type two-bit triplet priority valve 16 in the time that pedal unclamps, and in the next, oil-feed E1 mouth disconnects, and work F1 mouth is communicated with oil return G1 mouth; In the time of push down on the pedal, master drives pedal type two-bit triplet priority valve 16 in upper, and oil-feed E1 mouth is communicated with work F1 mouth, and oil return G1 mouth disconnects.Described the passenger side pedal type two-bit triplet priority valve 17 principle of work are with the main pedal type two-bit triplet priority valve 16 of driving, and its Main Function is the moving velocity of controlling vehicle, is specifically arranged in the right crus of diaphragm position of chaufeur, and functional equivalent is in the throttle of automobile.
Described master drives 3-position 4-way hand change over valve 18 in the time of meta, and its oil-feed J1 mouth, oil return K1 mouth, the first work M1 mouth and the second work N1 mouth are all communicated with; In the time of the extremely left position of manual reverse of direction, oil-feed J1 mouth and the second work N1 mouth are connected, the first work M1 mouth and the connection of oil return K1 mouth; In the time of the extremely right position of manual reverse of direction, oil-feed J1 mouth and the first work M1 mouth are connected, the second work N1 mouth and the connection of oil return K1 mouth.Described the passenger side 3-position 4-way hand change over valve 19 principle of work are with the main 3-position 4-way hand change over valve 18 of driving.Its Main Function is the transposition of controlling 3-position 4-way pilot operated directional control valve 9, realizes advancing and retreating of vehicle, is specifically arranged in the right hand direction of chaufeur, and functional equivalent is in the gearshift of the front and back of automobile.
Specific works principle of the present utility model is as follows:
When chaufeur starts vehicle, do not handle main 3-position 4-way hand change over valve 18 and the passenger side 3-position 4-way hand change over valve 19 driven, main 3-position 4-way hand change over valve 18 and the passenger side 3-position 4-way hand change over valve 19 driven is all in meta.Do not step on master and drive pedal type two-bit triplet priority valve 16 and the passenger side pedal type two-bit triplet priority valve 17, drive pedal type two-bit triplet priority valve 16 and the passenger side pedal type two-bit triplet priority valve 17 all in the next.Controllable capacity pump 2 is from hydraulic reservoir 1 oil suction, hydraulic oil is through the extremely oil-feed P3 mouth of monostable flow divider valve 5 of the oil-feed P1 of controllable capacity pump 2 mouth, three-way pipe, monostable flow divider valve 5 offers hydraulic control system by a part of hydraulic oil from stable state shunting B3 mouth, and the hydraulic oil of hydraulic control system flows to respectively main drive pedal type two-bit triplet priority valve 16 and the passenger side pedal type two-bit triplet priority valve 17 through three-way pipe.Now because main drive pedal type two-bit triplet priority valve 16 with the passenger side pedal type two-bit triplet priority valve 17 all in the next, master drives the oil-feed E1 mouth of pedal type two-bit triplet priority valve 16 and the oil-feed E2 mouth of the passenger side pedal type two-bit triplet priority valve 17 all disconnects, and controls oil and overflows back fuel tank through the oil return T3 of monostable flow divider valve 5 mouth.After stable state is divided oil by monostable flow divider valve 5, remaining hydraulic oil is discharged from unstable state shunting A3 mouth, oil-feed P4 mouth through three-way pipe to 3-position 4-way pilot operated directional control valve 9, now first of 3-position 4-way pilot operated directional control valve 9 control oily X mouth, second control oily Y mouth all without pressure in meta, fluid is through the oil return T4 of 3-position 4-way pilot operated directional control valve 9 mouth oil sump tank, and vehicle remains static.
When vehicle operation is on smooth road surface, need to advance while travelling at the main operation vehicle of driving, master is driven to 3-position 4-way hand change over valve 18 commutates to left position, step on the main pedal type two-bit triplet priority valve 16 of driving, master drives pedal type two-bit triplet priority valve 16 and switches to upper, control fluid through the main oil-feed E1 mouth of driving pedal type two-bit triplet priority valve 16, work F1 mouth, the main oil-feed J1 mouth of driving 3-position 4-way hand change over valve 18, the second work N1 mouth is to the first oil-feed U1 mouth of shuttle valve 20, under the effect of pressure oil, the second oil-feed V1 mouth of shuttle valve 20 is closed, control fluid the arrives 3-position 4-way pilot operated directional control valve 9 oily X mouth of the first control through the fuel-displaced W1 mouth of shuttle valve 20, promote 9 transpositions of 3-position 4-way pilot operated directional control valve to left position.The pressure oil of main system is through the oil-feed P4 of 3-position 4-way pilot operated directional control valve 9 mouth, the first work A4 mouth, three-way pipe is to the first work A5 mouth of front running motor 12, running motor 12 left-hand revolutions before driving, the second work B5 mouth of the premenstrual running motor 12 of oil return of front running motor 12, three-way pipe, the second work B4 mouth of 3-position 4-way pilot operated directional control valve 9, oil return T4 mouth oil sump tank, realized vehicle and travelled main advancing of driving.
When vehicle operation is on smooth road surface, need to be main when driving operation vehicle rollback and travelling, master is driven to 3-position 4-way hand change over valve 18 commutates to right position, step on the main pedal type two-bit triplet priority valve 16 of driving, master drives pedal type two-bit triplet priority valve 16 and switches to upper, control fluid through the main oil-feed E1 mouth of driving pedal type two-bit triplet priority valve 16, work F1 mouth, the main oil-feed J1 mouth of driving 3-position 4-way hand change over valve 18, the first work M1 mouth is to the first oil-feed U2 mouth of shuttle valve 21, under the effect of pressure oil, the second oil-feed V2 mouth of shuttle valve 21 is closed, control fluid the arrives 3-position 4-way pilot operated directional control valve 9 oily Y mouth of the second control through the fuel-displaced W2 mouth of shuttle valve 21, promote 9 transpositions of 3-position 4-way pilot operated directional control valve to right position.The pressure oil of main system is through the oil-feed P4 of 3-position 4-way pilot operated directional control valve 9 mouth, the second work B4 mouth, three-way pipe 10 is to the second work B5 mouth of front running motor 12, running motor 12 clickwises before driving, the first work A5 mouth of the premenstrual running motor 12 of oil return of front running motor 12, three-way pipe, the first work A4 mouth of 3-position 4-way pilot operated directional control valve 9, oil return T4 mouth oil sump tank, realized vehicle and travelled main retreating of driving.
When vehicle operation is on smooth road surface, need to operate vehicle in the passenger side advances while travelling, the passenger side 3-position 4-way hand change over valve 19 is commutated to right position, step on the passenger side pedal type two-bit triplet priority valve 17, the passenger side pedal type two-bit triplet priority valve 17 switches to upper, control the oil-feed E2 mouth of fluid through the passenger side pedal type two-bit triplet priority valve 17, work F2 mouth, the oil-feed J2 mouth of the passenger side 3-position 4-way hand change over valve 19, the second work N2 mouth is to the second oil-feed V2 mouth of shuttle valve 21, under the effect of pressure oil, the first oil-feed U2 mouth of shuttle valve 21 is closed, control fluid the arrives 3-position 4-way pilot operated directional control valve 9 oily Y mouth of the second control through the fuel-displaced W2 mouth of shuttle valve 21, promote 9 transpositions of 3-position 4-way pilot operated directional control valve to right position.The pressure oil of main system is through the oil-feed P4 of 3-position 4-way pilot operated directional control valve 9 mouth, the second work B4 mouth, three-way pipe is to the second work B5 mouth of front running motor 12, running motor 12 clickwises before driving, the first work A5 mouth of the premenstrual running motor 12 of oil return of front running motor 12, three-way pipe, the first work A4 mouth of 3-position 4-way pilot operated directional control valve 9, oil return T4 mouth oil sump tank, realized vehicle and travelled advancing of the passenger side.
When vehicle operation is on smooth road surface, need to be in the time that the passenger side operates vehicle rollback and travels, the passenger side 3-position 4-way hand change over valve 19 is commutated to left position, step on the passenger side pedal type two-bit triplet priority valve 17, the passenger side pedal type two-bit triplet priority valve 17 switches to upper, control the oil-feed E2 mouth of fluid through the passenger side pedal type two-bit triplet priority valve 17, work F2 mouth, the oil-feed J2 mouth of the passenger side 3-position 4-way hand change over valve 19, the first work M2 mouth is to the second oil-feed V1 mouth of shuttle valve 20, under the effect of pressure oil, the first oil-feed U1 mouth of shuttle valve 20 is closed, control fluid the arrives 3-position 4-way pilot operated directional control valve 9 oily X mouth of the first control through the fuel-displaced W1 mouth of shuttle valve 20, promote 9 transpositions of 3-position 4-way pilot operated directional control valve to left position.The pressure oil of main system is through the oil-feed P4 of 3-position 4-way pilot operated directional control valve 9 mouth, the first work A4 mouth, three-way pipe is to the first work A5 mouth of front running motor 12, running motor 12 left-hand revolutions before driving, the second work B5 mouth of the premenstrual running motor 12 of oil return of front running motor 12, three-way pipe, the second work B4 mouth of 3-position 4-way pilot operated directional control valve 9, oil return T4 mouth oil sump tank, realized vehicle and travelled retreating of the passenger side.
In the time that vehicle need to carry out travelling compared with the climbing of wide-angle, can operation sheet double motor change-over switch, allow two four-way electromagnetic reversing valves, 8 electromagnet switch on, now first of 3-position 4-way pilot operated directional control valve 9 the work A4 mouth passes through three-way pipe, the A5 mouth of running motor 12 before one tunnel directly connects, separately leads up to the first work A1 mouth of two four-way electromagnetic reversing valves 8, the A6 mouth that the 3rd work C1 mouth connects after running motor 13.The second work B4 mouth of 3-position 4-way pilot operated directional control valve 9 is by three-way pipe, the B5 mouth of running motor 12 before a road directly connects, the work B6 mouth of D1 mouth connection after running motor 13 of the second work B1 mouth, the 4th of two four-way electromagnetic reversing valves 8 of separately leading up to.The front running motor 12 of now walking and after running motor 13 can be realized simultaneously and working, and have increased the propulsive effort of vehicle.
Claims (2)
1. for the hydraulic moving open-circuit system of double-cab fork truck, comprise main hydraulic system, described main hydraulic system comprises hydraulic reservoir (1), controllable capacity pump (2), system by pass valve (4), monostable flow divider valve (5), two four-way electromagnetic reversing valves (8), 3-position 4-way pilot operated directional control valve (9), front running motor (12) and after running motor (13); The oil suction Q1 mouth of described controllable capacity pump (2) and pump housing release T1 mouth are being communicated with respectively fuel tank, and the oil-feed P1 mouth of controllable capacity pump (2) is communicated with the oil-feed P3 mouth of the oil-feed P2 mouth of system by pass valve (4), monostable flow divider valve (5) respectively by three-way pipe; The oil return T2 mouth of system by pass valve (4) is communicated with fuel tank; Monostable flow divider valve (5) has unstable state shunting A3 mouth and stable state shunting B3 mouth; The unstable state shunting A3 mouth of monostable flow divider valve (5) is being communicated with respectively the oil-feed P4 mouth of 3-position 4-way pilot operated directional control valve (9) and the feedback of controllable capacity pump 2 oil LS mouth by three-way pipe; The oil return T4 mouth of 3-position 4-way pilot operated directional control valve (9) is being communicated with fuel tank; The first work A5 mouth of running motor (12) and the first work A1 mouth of two four-way electromagnetic reversing valves (8) before the first work A4 mouth of 3-position 4-way pilot operated directional control valve (9) is being communicated with respectively by three-way pipe; The second work B5 mouth of running motor (12) and the second work B1 mouth of two four-way electromagnetic reversing valves (8) before the second work B4 mouth of 3-position 4-way pilot operated directional control valve (9) is being communicated with respectively by three-way pipe; The release T5 mouth of front running motor (12) is being communicated with fuel tank; The 3rd work C1 mouth of two four-way electromagnetic reversing valves (8) is being communicated with the first work A6 mouth of after running motor (13), and the 4th work D1 mouth of two four-way electromagnetic reversing valves (8) is being communicated with the second work B6 mouth of after running motor (13); The release T6 mouth of after running motor (13) is being communicated with fuel tank; It is characterized in that: also comprise hydraulic control system, described hydraulic control system comprises that master drives pedal type two-bit triplet priority valve (16) and the passenger side pedal type two-bit triplet priority valve (17), master drive 3-position 4-way hand change over valve (18), the passenger side 3-position 4-way hand change over valve (19), the first shuttle valve (20) and the second shuttle valve (21); The stable state shunting B3 mouth of described monostable flow divider valve (5) is being communicated with respectively main drive the oil-feed E1 mouth of pedal type two-bit triplet priority valve (16) and the oil-feed E2 mouth of the passenger side pedal type two-bit triplet priority valve (17) by three-way pipe; The working oil F1 mouth that described master drives pedal type two-bit triplet priority valve (16) is being communicated with the main oil-feed J1 mouth of driving 3-position 4-way hand change over valve (18), and the main oil return G1 mouth of driving pedal type two-bit triplet priority valve (16) is communicated with main oil return K1 mouth and the fuel tank of driving 3-position 4-way hand change over valve (18) respectively by three-way pipe; The first work M1 mouth that described master drives 3-position 4-way hand change over valve (18) is being communicated with the first oil-feed U2 mouth of the second shuttle valve (21), and main the second work N1 mouth of driving 3-position 4-way hand change over valve (18) is being communicated with the first oil inlet U1 of the first shuttle valve (20); The work F2 mouth of described the passenger side pedal type two-bit triplet priority valve (17) is being communicated with the oil-feed J2 mouth of the passenger side 3-position 4-way hand change over valve (19), and the oil return G2 mouth of the passenger side pedal type two-bit triplet priority valve (17) is being communicated with respectively oil return K2 mouth and the fuel tank of the passenger side 3-position 4-way hand change over valve (19) by three-way pipe; The first actuator port M2 of described the passenger side 3-position 4-way hand change over valve (19) is being communicated with the second oil-feed V1 mouth of the first shuttle valve (20), and the second working oil N2 mouth of the passenger side 3-position 4-way hand change over valve (19) is being communicated with the second oil-feed V2 mouth of the second shuttle valve (21); The fuel-displaced W1 mouth of the first shuttle valve (20) is being communicated with first of described 3-position 4-way pilot operated directional control valve (9) and is controlling oily X mouth, and the fuel-displaced W2 mouth of the second shuttle valve (21) is being communicated with second of described 3-position 4-way pilot operated directional control valve (9) and is controlling oily Y mouth.
2. the hydraulic moving open-circuit system for double-cab fork truck according to claim 1, is characterized in that: the stable state shunting B3 mouth of described monostable flow divider valve (5) is provided with controlling water kick valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320662970.9U CN203611746U (en) | 2013-10-26 | 2013-10-26 | Hydraulic travelling open-type system for forklift truck with double driving cabs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320662970.9U CN203611746U (en) | 2013-10-26 | 2013-10-26 | Hydraulic travelling open-type system for forklift truck with double driving cabs |
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| CN203611746U true CN203611746U (en) | 2014-05-28 |
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| CN201320662970.9U Expired - Fee Related CN203611746U (en) | 2013-10-26 | 2013-10-26 | Hydraulic travelling open-type system for forklift truck with double driving cabs |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103507629A (en) * | 2013-10-26 | 2014-01-15 | 安徽合力股份有限公司 | Hydraulic traveling open-type system for fork truck with double driving cabs |
| CN106799964A (en) * | 2015-11-25 | 2017-06-06 | 熵零股份有限公司 | A kind of velocity profile drive system |
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2013
- 2013-10-26 CN CN201320662970.9U patent/CN203611746U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103507629A (en) * | 2013-10-26 | 2014-01-15 | 安徽合力股份有限公司 | Hydraulic traveling open-type system for fork truck with double driving cabs |
| CN103507629B (en) * | 2013-10-26 | 2016-03-02 | 安徽合力股份有限公司 | For the hydraulic moving open-circuit system of double-cab fork truck |
| CN106799964A (en) * | 2015-11-25 | 2017-06-06 | 熵零股份有限公司 | A kind of velocity profile drive system |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140528 Termination date: 20211026 |