Background technology
At present, the leveling system in engineering field mainly is divided into two big types: manual leveling system and automatic horizontal control system.Automatic horizontal control system can be divided into two big types according to the topworks that adopts is different again: electromechanical automatic horizontal control system and fluid pressure type automatic horizontal control system.The manual leveling system mainly adopts range estimation and manual mode to carry out roughly leveling, or adopts other supplementary means to carry out the secondary adjustment, and the leveling time is long, and precision is low, and distortion is big, and repeatability is big, and stability is not high; The electromechanical automatic horizontal control system adopts the topworks of ball screw as leveling more; And be used in combination speed reduction unit, photoelectric encoder, servomotor etc. and form a supporting legs support; But the load-bearing capacity of ball screw is not strong; The driving force of system is less, therefore is not suitable for heavy mobile vehicle, only is applicable to the mobile vehicle that load is lighter; The fluid pressure type automatic horizontal control system mainly with hydraulic cylinder as topworks, adopt hydraulic-driven, driving force is big, load capacity is strong, but the speed displacement of its hydraulic cylinder feedback relative complex realizes that control automatically is difficult.
Summary of the invention
It is big to the purpose of this invention is to provide a kind of driving force, and load capacity is strong, and the leveling time is short, be out of shape for a short time, and repeatability is little, stable high car launcher job platform levelling device.
The objective of the invention is to realize: a kind of car launcher job platform levelling device through following technical scheme; Comprise main frame, ECU, Ultronics control system, preceding left branch leg oil cylinder, preceding right support oil cylinder, back left branch leg oil cylinder, the right support oil cylinder in back; The degree of tilt pick-up unit; Said main frame is connected with ECU, Ultronics control system respectively through data line; Said Ultronics control system is connected with ECU through data line; Said Ultronics control system is connected with preceding left branch leg oil cylinder, preceding right support oil cylinder, back left branch leg oil cylinder, the right support oil cylinder in back respectively through oil circuit; On left branch leg oil cylinder, preceding right support oil cylinder, back left branch leg oil cylinder, the right support oil cylinder inwall in back the pressure transducer (not shown in figure 1) is housed respectively before said; All pressure transducers are respectively through the signal wire (not shown in figure 1) that is connected with ECU; Said tilt detecting device is fixed on the job platform through screw rod; Be provided with the cruciform mercury cell in the said degree of tilt pick-up unit; Said mercury cell center is provided with pit; Mercury is housed in the pit; Be equipped with respectively and preceding left branch leg oil cylinder, preceding right support oil cylinder, back left branch leg oil cylinder, the back corresponding pressure transducer of right support oil cylinder
![Figure 2011101398756100002DEST_PATH_IMAGE001](https://patentimages.storage.googleapis.com/3c/57/48/952ea20bab7cc4/2011101398756100002DEST_PATH_IMAGE001.png)
, pressure transducer
, pressure transducer
and pressure transducer
said mercury cell end, and said pressure transducer
, pressure transducer
, pressure transducer
He pressure transducer
are connected Yu ECU through signal wire respectively.
Said main frame is a microcomputer.
Said ECU is an electronic control unit, claims " car running computer ", " vehicle-mounted computer " etc. again.Say it is the automobile microcomputerized controller from purposes at present, also be the automobile single-chip microcomputer.It is the same with common single-chip microcomputer, is made up of large scale integrated circuits such as microprocessor (CPU), storer (ROM, RAM), input/output interface (I/O), analog to digital converter (A/D) and shaping, drivings.The function of ECU is to carry out computing, processing, judgement according to the information that the program of its internal memory and data are taken into account various sensors inputs to air mass flow, output order then, and the electric impulse signal that certain width is provided to fuel injector is with the control distributive value.ECU is made up of microcomputer, input, output and control circuit etc.
The Ultronics control system is a hydraulic control system, and in its unique double spool control technology, every plate valve has two spools to its key at multiple directional control valve; Be equivalent to a three-position four-way valve is become the combination of two 3-position-3-way valves, two spools both can be controlled separately, also can be carried out to control according to steering logic; And two actuator ports all have pressure transducer; Each spool is position sensor all, can control the pressure or the flow of two-way hydraulic oil respectively through the closed-loop control to transducing signal, has very high control accuracy; Multiple directional control valve can obtain various controlling schemes through different combinations, to satisfy the needs of system.
The present invention mainly realizes the leveling process through the variation of measuring mercury gravity, and this system adopts hydraulic-driven, and driving force is big, and load capacity is strong, can realize automatic leveling process preferably.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
With reference to accompanying drawing; Present embodiment comprises main frame 2, ECU3, Ultronics control system 1, preceding left branch leg oil cylinder 4, preceding right
support oil cylinder 5, back left branch
leg oil cylinder 6, the right
support oil cylinder 7 in back; Also be provided with a degree of tilt pick-up unit; Said main frame 2 is connected with ECU3, Ultronics control system 1 respectively through data line; Said Ultronics control system 1 is connected with ECU3 through data line; Said Ultronics control system 1 is connected with preceding left branch leg oil cylinder 4, preceding right
support oil cylinder 5, back left branch
leg oil cylinder 6, the right
support oil cylinder 7 in back respectively through oil circuit; On left branch leg oil cylinder 4, preceding right
support oil cylinder 5, back left branch
leg oil cylinder 6, right
support oil cylinder 7 inwalls in back the pressure transducer (not shown in figure 1) is housed respectively before said; All pressure transducers are respectively through the signal wire (not shown in figure 1) that is connected with ECU3; Said degree of tilt pick-
up unit 10 is fixed on the
job platform 16 through
screw rod 15; Be provided with
cruciform mercury cell 8 in the said degree of tilt pick-
up unit 10; Said
mercury cell 8 centers are provided with
pit 9; In the
pit 9 mercury is housed; Be equipped with respectively and preceding left branch leg oil cylinder 4, preceding right
support oil cylinder 5, back left branch
leg oil cylinder 6, the right
support oil cylinder 7 corresponding pressure transducers in
back
11,
pressure transducer
12,
pressure transducer
13 and
pressure transducer
14 said
mercury cell 8 ends, and said
pressure transducer
11,
pressure transducer
12,
pressure transducer
13 He
pressure transducer
14 are connected Yu ECU3 through signal wire respectively.
During work; If job platform 16 is in heeling condition, then the liquid mercury in the mercury cell 8 center pits 9 will flow to lower mercury cell 8 ends, because the gravity of mercury self; Can make the pressure transducer pressure of this end become big; Pressure signal passes to ECU3 through signal wire and converts digital signal to and be presented on the operation panel, and the staff sends the instruction of job platform being carried out leveling through main frame 2 to Ultronics control system 1, left branch leg oil cylinder 4 before Ultronics control system 1 drives, preceding right support oil cylinder 5, the right support oil cylinder 7 of back left branch leg oil cylinder 6 or back; Make the big corresponding oil cylinder piston of pressure stretch out a segment length; Make the liquid mercury of this end slowly flow to middle pit, equal pressure shows that illustrative system had been in horizontality when numerical value was tending towards the horizontal pressure force displayed value.Generally less pressure display value is not adjusted, because the withdrawal of oil cylinder supporting leg might make tire land, this is not fill to be permitted.