Hydraulic device and its combined lift truck
Technical field
The utility model is related to a kind of combined lift truck hydraulic device and its combined lift trucks, belong to engineering machine
Tool field.
Background technology
Conventional lift truck common-use words urban transportation facility maintenance or construction or the assembling of heavy mechanical equipment.
It is conventional flat road that environment residing for it, which is typically, is arranged on vehicle platform, operation construction of conveniently marching into the arena, can be effective
Raising work efficiency.
For some track traffic facilities, due to needing to be laid with power line or installing some auxiliary equipment additional, it is also desirable to energy
Worker is promoted to suitable height and carries out operation by the equipment enough lifted.But current track traffic construction site lacks properly
Flat road surface, since the direction of operation is there may be orbital facilities both sides, so lifting device is needed to carry back and forth, for
Inconvenient construction of marching into the arena for the tractor of some vehicle platforms.
It is existing directly to add lifting device realization elevating function using railroad hauling car, but this kind of equipment is that track is special
With, for and be not connected with existing track in the track traffic facility built or isolated, it is necessary to specially say that it is carried to behind scene again
It is maneuvered into large-scale crane on track, it is unsuitable for some small-scale track traffic facility constructions, it is of high cost, carry week
Phase is long.
It carries and perhaps can be solved with the multi-functional lifting device in orbital facilities scene if any a kind of can facilitate simultaneously
State problem.
The content of the invention
The present invention provides a kind of hydraulic device and its combined lift truck, for two kinds of operating environments of highway and track
The hydraulic control system of lift truck.
To achieve the above object, the technical solution adopted by the present invention is:
Hydraulic device, the telescopic oil cylinder of amplitude oil cylinder, support telescopic arm including driving telescopic arm adjust manual platform
Leveling cyclinder and the rotation of rotary table oil cylinder of driving elevator rotation, the oil inlet pipe and oil outlet pipe of the amplitude oil cylinder are equipped with
Bidirectional balanced valve, the oil inlet pipe and oil outlet pipe of the telescopic oil cylinder are equipped with flexible balanced valve, and the leveling cyclinder is two
Group, the oil inlet pipe and oil outlet pipe of one of which leveling cyclinder are equipped with Bidirectional balanced valve, the oil inlet pipe of two groups of leveling cyclinders
Road and oil outlet pipe set hydraulic lock after collecting;
Hydraulic oil tank and oil pump systems are further included, oil pump systems include main oil pipe, and main oil pipe is arranged in series oil pump, high pressure
Filter and bypass check valve filter a, main oil pipe access amplitude oil cylinder, telescopic oil cylinder, leveling cyclinder and are turned after multi-way valve
Platform angling cylinder;
Amplitude oil cylinder, telescopic oil cylinder, the oil return pipe of leveling cyclinder and rotation of rotary table oil cylinder are passed through fuel tank after multi-way valve.
Preferably, the multi-way valve is to lead to reversal valve three more, using hydraulic pilot, electromagnetism and manual various control.
Preferably, each oil inlet pipe is equipped with pressure reducing valve before being passed through multi-way valve.
Preferably, main oil pipe is divided into the oil inlet main oil pipe for being passed through multi-way valve and the control for providing multi-way valve guide's hydraulic oil
Oil pipe, in-line filter and overflow valve on control oil pipe, pressure release is set between the filter forepart of the control oil pipe and oil return pipe
Valve.Pipeline where oil pump is also parallel with manual pump conduit, and manual pump of the manual pump conduit equipped with front end is with filter and unidirectionally
Valve.
Combined lift truck equipped with above-mentioned hydraulic device, including road rail vehicle car body and elevator, car body is divided into
Front truck portion and rear car portion, are hinged and connected between front truck portion and rear car portion, and the bottom in front truck portion and rear car portion is respectively equipped with a pair of of automobile
Wheel and one group of directive wheel, directive wheel are lifting structure, directive wheel in orbit by front truck portion and rear car portion jack to automotive wheels from
It turns up the soil face;
The bottom platform of elevator is arranged in rear car portion, and elevator is equipped with manual platform, and the bottom of the elevator is put down
Platform is rotating platform, and rotating platform is built-in with rotation of rotary table oil cylinder, is telescopic arm between elevator bottom platform and manual platform,
Telescopic arm is built-in with telescopic oil cylinder, amplitude oil cylinder is set between telescopic arm outermost layer and rotating platform, the manual platform is with stretching
It is hinged and connected between the top of arm, the lower part of articulated position sets two groups of leveling cyclinder connection manual platforms and telescopic arm, the people
Work platform is in horizontality always in the stretching of telescopic arm or lifting process under leveling cyclinder adjusting.
The utility model has the advantage of provide a kind of hydraulic system suitable for combined lift truck and corresponding liter
Vehicle is dropped, the lift work purpose under two kinds of operating environments of rail-road is realized, reduces cost, improve operating speed, use is wheeled
Automobile mode drives directly into operating environment, then travels operation on track, can adapt to the changeable construction environment of orbital facilities, carries
The high working at height efficiency of orbital facilities.
Description of the drawings
Fig. 1 is the hydraulic scheme of the present invention,
Fig. 2 is the structure chart of the combined lift truck of the present invention.
Reference numeral:
With bypass check valve a4, pump 5 carries 7 amplitude oil cylinder 8 of bypass check valve b6 multi-way valves to 1 oil pump, 2 filter 3 manually
9 leveling cyclinder of telescopic oil cylinder and 10 rotation of rotary table oil cylinder, 11 hydraulic lock, 12 Bidirectional balanced valve 13 14 main oil pipe 15 of balanced valve that stretches are led
16 fuel tank of oil return pipe, 17 relief valve, 18 pressure reducing valve.
Specific embodiment
Present disclosure hydraulic device as shown in Figure 1 and combined lift truck as shown in Figure 2.
Hydraulic device as shown in Figure 1 includes the amplitude oil cylinder 7 of driving telescopic arm, the telescopic oil cylinder 8 of support telescopic arm, tune
The leveling cyclinder 9 of whole manual platform and the rotation of rotary table oil cylinder 10 of driving elevator rotation, the oil inlet pipe of the amplitude oil cylinder 7
Bidirectional balanced valve 12 is equipped with oil outlet pipe, the oil inlet pipe and oil outlet pipe of the telescopic oil cylinder 8 are equipped with flexible balance
Valve 13, the leveling cyclinder 9 are two groups, and the oil inlet pipe and oil outlet pipe of one of which leveling cyclinder 9 are equipped with bidirectional balanced
Valve 12, the oil inlet pipe and oil outlet pipe of two groups of leveling cyclinders 9 set hydraulic lock 11 after collecting.
Luffing fuel tank is used for the lifting of telescopic arm, realizes the lifting angle adjustment of telescopic arm.Telescopic oil cylinder in telescopic arm,
In the case where hoisting depth is inadequate, realizes the brachium adjustment of telescopic arm, adapt to the adjustment of higher construction location.
Hydraulic power system includes fuel tank 16 and oil pump systems, and oil pump systems include main oil pipe 14, and the series connection of main oil pipe 14 is set
It puts oil pump 1, filter 2 and bypass check valve filter a3, main oil pipe 14 and amplitude oil cylinder 7, telescopic oil cylinder is accessed after multi-way valve 6
8th, leveling cyclinder 9 and rotation of rotary table oil cylinder 10;Amplitude oil cylinder 7, telescopic oil cylinder 8, leveling cyclinder 9 and rotation of rotary table oil cylinder 10 return
Oil pipe 15 comes together in main oil return pipe 15 after multi-way valve 6 and is passed through fuel tank 16, and main oil return pipe 15 is set with bypass check valve filtering
Device b5.Multi-way valve 6 is to lead to reversal valve three more, using hydraulic pilot, electromagnetism and manual various control.Each oil inlet pipe leads to
Pressure reducing valve 18 is equipped with before entering multi-way valve 6.
Main oil pipe 14 divides the oil inlet main oil pipe for being passed through multi-way valve 6 and the control oil pipe for providing 6 guide's hydraulic oil of multi-way valve,
In-line filter and overflow valve on control oil pipe set relief valve between the filter forepart of the control oil pipe and oil return pipe 15
17.Relief valve 17 is used for each multi-way valve by each hydraulic cylinder into the discharge degree under oil outlet pipe closed state, prevents oil pump from damaging
It is bad.
Time oil return pipe 15 is additionally provided with, secondary oil return pipe 15 collects the control hydraulic oil after multi-way valve 6 is passed through by control oil pipe simultaneously
It is passed through fuel tank 16.Secondary oil return pipe 15 is used to collect the control oil of each valve or lets out the pressure oil at place.
1 place pipeline of oil pump is also parallel with manual pump conduit, and manual pump conduit is equipped with the manual pump positioned at pipeline front end
And check valve.The manual pump being arranged in parallel can provide power for hydraulic system in case of a system failure, improve equipment
Security,
Combined lift truck, including road rail vehicle car body and elevator, car body is divided into front truck portion and rear car portion, front truck
It is hinged and connected between portion and rear car portion, the bottom in front truck portion and rear car portion is respectively equipped with a pair of of automotive wheels and one group of directive wheel.Car body
It is divided into front truck portion and rear car portion and is hinged and connected, facilitates turning adjustment of the car body under road running state.
Directive wheel is lifting structure, and front truck portion and rear car portion are jacked to automotive wheels in orbit and leave ground by directive wheel.
Using automotive wheels ground connection traveling under road running state, directive wheel is retracted to extreme higher position at this time, prevents from contacting with ground.It is in-orbit
On road when driving, directive wheel moves downwardly to extreme lower position and supports car body, and automotive wheels leave ground and keep certain at this time
Highly, directive wheel is on track as support wheel and driving wheel, realizes the form on track.
The bottom platform of elevator is arranged in rear car portion, and elevator is equipped with manual platform, and the bottom of the elevator is put down
Platform is rotating platform, and rotating platform is built-in with rotation of rotary table oil cylinder 10, is flexible between elevator bottom platform and manual platform
Arm, telescopic arm are built-in with telescopic oil cylinder 8, set amplitude oil cylinder 7 between telescopic arm outermost layer and rotating platform, the manual platform with
It is hinged and connected between the top of telescopic arm, the lower part of articulated position sets two groups of leveling cyclinders 9 and connects manual platform and telescopic arm, institute
It states manual platform and is in horizontality always under the adjusting of leveling cyclinder 9 in the stretching of telescopic arm or lifting process.
Rotating platform is rolled to each side for adjusting telescopic arm to car body, reaches track side surfaces direction position, by manual platform
By near operation construction location.Amplitude oil cylinder is used to adjust the angle between telescopic arm and horizontal plane.Telescopic oil cylinder in telescopic arm will
Telescopic arm extends to maximum, realizes the farthest highest conveying of manual platform.
Leveling cyclinder is used to adjust the horizontal level between manual platform, and during lifting, manual platform needs telescopic arm
Moment is in horizontality, at this time by the angle between leveling cyclinder adjustment manual platform and telescopic arm top, realizes manually flat
The platform moment is in horizontality.