CN103148060B - Step on lift control system and the controlling method of car staircase - Google Patents
Step on lift control system and the controlling method of car staircase Download PDFInfo
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- CN103148060B CN103148060B CN201310065863.2A CN201310065863A CN103148060B CN 103148060 B CN103148060 B CN 103148060B CN 201310065863 A CN201310065863 A CN 201310065863A CN 103148060 B CN103148060 B CN 103148060B
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Abstract
The invention provides a kind of lift control system and controlling method of stepping on car staircase.This to step in the lift control system of car staircase oil sources for providing fluid to hoist cylinder, selector valve is flowed to by the fluid of hoist cylinder for changing, piston in hoist cylinder is connected with staircase, for driving staircase to be elevated, comprise in addition: the operational order that order acquisition device is elevated staircase for receiving operator; Position detecting device is for detecting the adjustable height of staircase; Rotation detecting is for detecting the run signal of revolving dial; Controller, be connected respectively with the control end of selector valve, order acquisition device, position detecting device and rotation detecting, for obtaining operational order and the run signal of Real-time Obtaining revolving dial and the adjustable height of staircase, according to the run signal of revolving dial and the adjustable height of staircase, the control end to selector valve sends the control signal controlling staircase elevating movement.Thus avoid hydraulic energy and lose and eliminate potential safety hazard.
Description
Technical field
The present invention relates to engineering machinery field, in particular to a kind of lift control system and controlling method of stepping on car staircase.
Background technique
Large-scale engineering machinery, bulky as large excavator etc., the height driving distance ground, building is more and more higher, and driver needs to drive building up and down by staircase.And the driving building of the engineering machinery such as excavator is positioned on revolving dial, in order to the revolution not affecting revolving dial runs, stepping on car staircase generally needs to pack up after driver steps on car.
Fig. 1 is the schematic diagram according to the lift control system stepping on car staircase in prior art.In the drawings, the lifting of staircase is controlled by hoist cylinder 12.When the time receiving on needs staircase, oil hydraulic pump 11 pumps hydraulic oil enters the rodless cavity of hoist cylinder 12 from selector valve 13, and the hydraulic oil in the rod chamber of hoist cylinder 2 directly flows back to fuel tank 14 through selector valve 13, thus the piston promoting hoist cylinder 12 moves to rod chamber, drives on staircase and receives.When needs staircase is transferred, oil hydraulic pump 11 pumps hydraulic oil enters the rod chamber of hoist cylinder 12 from selector valve 13, in this case the pressure in rod chamber is exactly the working pressure of hydraulic system, under the effect of working pressure, the hydraulic oil in the rodless cavity of hoist cylinder 12 flows back to fuel tank 14 through selector valve 13.Selector valve 13 directly controls by operating button the flow direction changing hydraulic system by operator, thus controls the lifting direction of staircase.In addition, oil purifier 16, relief valve 17 and oil pressure gauge 18 are set as additional device, improve the functional reliability of this hydraulic system.
But because the operating mode of large-scale engineering machinery is complicated, staircase whether arrives precalculated position and whether engineering machinery performs an action, all need to rely on operator to estimate judgement, there is error unavoidably, such as when occurring that piston has arrived the end of rod chamber or rodless cavity, cannot continue action, now continue hydraulic driving and can cause section hydraulic energy loss, also can affect the operating life of hydraulic system.In addition, when engineering machinery carries out revolution operation, if there is the situation of misoperation staircase lifting, the potential safety hazard of engineering machinery can be caused, cause the Safety performance of engineering machinery to decline.
For relying on operator's Non-follow control staircase to be elevated the problem that cannot meet complex work environment in prior art, at present effective solution is not yet proposed.
Summary of the invention
The present invention aims to provide a kind of lift control system and controlling method of stepping on car staircase, relies on operator's Non-follow control staircase to be elevated the problem that cannot meet complex work environment to solve in prior art.
To achieve these goals, according to an aspect of the present invention, a kind of lift control system stepping on car staircase is provided.This lift control system stepping on car staircase comprises oil sources, selector valve, hoist cylinder, wherein, oil sources is used for providing fluid to hoist cylinder, selector valve is flowed to by the fluid of hoist cylinder for changing, piston in hoist cylinder is connected with staircase, for driving staircase to be elevated, further, this control system also comprises: order acquisition device, for receiving the operational order that operator are elevated staircase; Position detecting device, for detecting the adjustable height of staircase; Rotation detecting, for detecting the run signal of revolving dial; Controller, be connected respectively with the control end of selector valve, order acquisition device, position detecting device and rotation detecting, this controller is for obtaining operational order, and the run signal of Real-time Obtaining revolving dial and the adjustable height of staircase, according to the run signal of revolving dial and the adjustable height of staircase, the control end to selector valve sends the control signal controlling staircase elevating movement.
Further, position detecting device is arranged on the cylinder body of hoist cylinder, obtains the adjustable height of staircase for the running position correspondence by detecting piston in hoist cylinder.
Further, position detecting device comprises: multiple limit switch, is separately positioned on the position of the different adjustable heights of corresponding staircase, to detect the adjustable height of staircase.
Further, order acquisition device comprises: button received by staircase, for obtaining operational order operator receiving staircase; Button transferred by staircase, transfers the operational order of staircase for obtaining operator.
Further, rotation detecting is rotation pressure switch, according to the output state of rotation pressure switch, controller is also for judging whether revolving dial performs revolution action.
Further, selector valve comprises filler opening, return opening, the first actuator port and the second actuator port, wherein, filler opening is connected with oil sources, return opening connects fuel tank, and the first actuator port is connected with the rodless cavity of hoist cylinder, and the second actuator port is connected with the rod chamber of hoist cylinder; When selector valve is positioned at the first working position, the rod chamber of hoist cylinder is communicated with fuel tank, and the rodless cavity of hoist cylinder is communicated with oil sources, and staircase performs and transfers motion; When selector valve is positioned at the second working position, the rodless cavity of hoist cylinder is communicated with fuel tank, and the rod chamber of hoist cylinder is communicated with oil sources, and staircase receives motion on performing; When selector valve is positioned at the 3rd working position, the rod chamber of hoist cylinder is not all communicated with oil sources or fuel tank with rodless cavity.
Further, the lift control system stepping on car staircase provided by the invention also comprises: adjustable restrictive valve, is arranged between oil sources and selector valve, and the first hydraulic fluid port of adjustable restrictive valve is connected with oil sources, and the second hydraulic fluid port of adjustable restrictive valve is connected with the filler opening of selector valve.
Further, the lift control system stepping on car staircase provided by the invention also comprises: equilibrium valve, be arranged between hoist cylinder and selector valve, the oil outlet of equilibrium valve is connected with the second actuator port of selector valve, the control port of equilibrium valve is connected with the pipeline between the first actuator port of selector valve and the rodless cavity of hoist cylinder, and the filler opening of equilibrium valve is connected with the rod chamber of hoist cylinder.
Further, the lift control system stepping on car staircase provided by the invention also comprises: one-way valve, is connected in parallel with equilibrium valve.
According to another aspect of the present invention, a kind of lift control method stepping on car staircase is provided.This lift control method comprises: obtain operational order, operational order comprises on staircase receives operational order and the instruction of staircase lowering operation; The run signal of Real-time Obtaining revolving dial; The adjustable height of Real-time Obtaining staircase; According to the run signal of operational order, revolving dial and the adjustable height of staircase, corresponding transmission controls the control signal of staircase elevating movement.
Further, according to the run signal of operational order, revolving dial and the adjustable height of staircase, the corresponding control signal controlling staircase elevating movement that sends comprises: when revolving dial is performing revolution action, sends and controls the control signal that staircase does not carry out elevating movement.
Further, according to the run signal of operational order, revolving dial and the adjustable height of staircase, the corresponding control signal controlling staircase elevating movement that sends comprises: when revolving dial does not perform revolution action, the control signal controlling staircase to be received or transfers action is sent according to operational order, and when the adjustable height of staircase reaches preset height, send and control the control signal that staircase stops lifting.
Apply technological scheme of the present invention, controller obtains the operational order of operator, and carrying out in the process of staircase elevating control according to operational order, the height of real-time detection staircase and the action situation of revolving dial, when staircase operation puts in place or start to perform revolution action, timely control staircase stops lifting, avoid on the one hand hoist cylinder to reach the limit of position and still perform the hydraulic energy loss that hydraulic driving causes, eliminate the potential safety hazard that companionway may cause when turning round on the other hand, thus enable staircase meet complicated working environment safely and reliably.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram according to the lift control system stepping on car staircase in prior art;
Fig. 2 is the schematic diagram stepping on the lift control system of car staircase according to the embodiment of the present invention;
Fig. 3 is the schematic diagram preferably stepping on the lift control system of car staircase according to the embodiment of the present invention;
Fig. 4 is the schematic diagram stepping on the lift control method of car staircase according to the embodiment of the present invention;
Fig. 5 transfers control flow chart according to the staircase stepping on the lift control method of car staircase of the embodiment of the present invention;
Control flow chart received by the staircase stepping on the lift control method of car staircase according to the embodiment of the present invention to Fig. 6.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
Embodiments provide one and step on car staircase lift control system, Fig. 2 is the schematic diagram stepping on car staircase lift control system according to the embodiment of the present invention, as shown in Figure 2, this hydraulic lifting system comprises oil sources 21, selector valve 22, hoist cylinder 23, wherein, oil sources 21 is for providing fluid to hoist cylinder 23, selector valve 22 is flowed to by the fluid of hoist cylinder 23 for changing, piston in hoist cylinder 23 is connected with staircase, be elevated for driving staircase, also comprise divided by outside upper-part: order acquisition device 26, for obtaining the operational order that operator are elevated staircase, position detecting device 25, for detecting the adjustable height of staircase, rotation detecting 27, for detecting the run signal of revolving dial, controller 24, be connected respectively with the control end of selector valve 22, order acquisition device 26, position detecting device 25 and rotation detecting 27, for obtaining operational order, and the adjustable height signal of the run signal of Real-time Obtaining revolving dial and staircase, according to the run signal of revolving dial and the adjustable height signal of staircase, the control end to selector valve sends the control signal controlling staircase elevating movement.Thus, when this steps on the hydraulic work system of car staircase lift control system, hydraulic oil flows to and is roughly: after oil sources pumping, enter hoist cylinder after selector valve carry out staircase lifting driving, then selector valve enters fuel tank, complete hydraulic circulation, in the process, by the control of selector valve, change hydraulic oil and enter the direction of rod chamber or rodless cavity to change the direction of receipts and decline on staircase.
Utilize the lift control system stepping on car staircase of the embodiment of the present invention, controller 24 receives the operational order of operator by order acquisition device 26, control command is sent by selector valve 22 according to this operational order, change flow of pressurized and step on the lifting of car staircase to control hoist cylinder 23 action with realization, in control procedure, utilize position detecting device 25 to obtain the adjustable height of staircase in real time, and utilize rotation detecting 27 to obtain the run signal of revolving dial, when performing revolution action, do not carry out staircase descending operation, control staircase stopping lifting in time when staircase runs to put in place simultaneously, the hydraulic energy loss that the hydraulic driving that still performs the piston arrives limit position avoiding on the one hand hoist cylinder 23 causes, eliminate the potential safety hazard that companionway may cause when turning round on the other hand, thus enable staircase meet complicated working environment safely and reliably.
Fig. 3 is the schematic diagram preferably stepping on the lift control system of car staircase according to the embodiment of the present invention, and as shown in Figure 3, above position detecting device 25, can use lead limit switch or arrange on proximity switch at oil cylinder 23 and realize.Preferably, position detecting device 25 is arranged on the cylinder body of hoist cylinder 23, obtains the adjustable height of staircase for the running position correspondence by detecting piston in hoist cylinder 23.Particularly, position detecting device 25 comprises: multiple limit switch, is separately positioned on the cylinder body position of the different adjustable heights of corresponding staircase, with the running position of indicator piston.Such as can arrange two limit switches, wherein, the first limit switch 251, for when piston runs to the first predeterminated position, changes on off state; Second limit switch 252, for when piston runs to the second predeterminated position, changes on off state.Above first predeterminated position can be at the limit position close to rod chamber, and namely piston has arrived the end of rod chamber, and now staircase receives position; Second predeterminated position can be at the limit position close to rodless cavity, and namely piston has arrived the end of rodless cavity, and now the limit of hydraulic pressure installation transferred to by staircase.In both cases, need to stop staircase continuation is received or transferred.Thus staircase can be obtained according to the switching value of two limit switches and whether be elevated and put in place.
Similarly, plural limit switch can be set, a concrete height of the corresponding staircase of switching value of each limit switch, thus ensure that control is more flexible.
Except drawing the mode of staircase adjustable height by detection piston position correspondence above, position detecting device can also be limit switch or the range unit of other form, such as be separately positioned on the limit switch of the position of the different adjustable heights of corresponding staircase, when staircase arrives relevant position, carry out switch changed position, or use range unit, measure the distance of the relative fixed reference of staircase, correspondence obtains adjustable height.
Order acquisition device 26 can use the mode such as button and operating stem to realize, and when using push-botton operation, order acquisition device 26 can comprise: staircase is received button 261, for obtaining operational order operator receiving staircase; Button 262 transferred by staircase, transfers the operational order of staircase for obtaining operator.
During in order to avoid carrying out revolution operation at engineering machinery revolving dial, operator's misoperation instruction acquisition device, cause the problem of potential safety hazard, the lift control system stepping on car staircase of this preferred embodiment utilizes rotation detecting 27, send the actuating signal of revolving dial, particularly, rotation detecting 27 is can be rotation pressure switch, controller 24 is also for judging according to the output state of rotation pressure switch whether revolution action performs, such as when revolving dial turns round, controller 24 sends and controls the control signal that staircase does not carry out elevating movement.When revolving dial does not perform revolution action, send the control signal controlling staircase to be received or transfers action according to operational order, and when the adjustable height of staircase reaches preset height, send and control the control signal that staircase stops lifting.
The hydraulic connecting stepping on the lift control system of car staircase of above-described embodiment closes and is: selector valve 22 comprises oil inlet P, oil return inlet T, the first actuator port A and the second actuator port B, wherein oil inlet P is connected with oil sources, oil return inlet T connects fuel tank, first actuator port A is connected with the rodless cavity of hoist cylinder, and the second actuator port B is connected with the rod chamber of hoist cylinder.
When selector valve 22 is positioned at the first working position, oil return inlet T connects the second actuator port B, and oil inlet P connects the first actuator port A, thus the rod chamber of hoist cylinder is communicated with fuel tank, and the rodless cavity of hoist cylinder is communicated with oil sources, and staircase performs and transfers motion; When selector valve is positioned at the second working position, the rodless cavity of hoist cylinder is communicated with fuel tank, and the rod chamber of hoist cylinder is communicated with oil sources, and staircase receives motion on performing; Oil return inlet T connects the first actuator port A, and oil inlet P connects the second actuator port B, and when selector valve is positioned at the 3rd working position, the rod chamber of hoist cylinder is not all communicated with oil sources or fuel tank with rodless cavity.
Particularly, above selector valve 22 can use three position four-way directional control valve, wherein the oil inlet P of three position four-way directional control valve is connected with oil sources 21, the oil return inlet T of three position four-way directional control valve connects fuel tank, first actuator port A of three position four-way directional control valve is connected with the rodless cavity of hoist cylinder 23, and the second actuator port B of three position four-way directional control valve is connected with the rod chamber of hoist cylinder 23.When this selector valve 22 is positioned at meta, oil inlet P and oil return inlet T are all ended, hoist cylinder 23 stops action, staircase lifting action performs stopping, when this selector valve 22 is positioned at left position, hydraulic oil connects the second actuator port B by oil inlet P, hydraulic oil enters the rod chamber of hoist cylinder 23, promote piston rod to move to rodless cavity, hydraulic oil in rodless cavity returns oil return inlet T by the first actuator port A, drive on staircase and receive, when this selector valve 22 is positioned at right position, hydraulic oil connects the first actuator port A by oil inlet P, hydraulic oil enters the rodless cavity of hoist cylinder 23, promote piston rod to move to rod chamber, hydraulic oil in rod chamber returns oil return inlet T by the second actuator port B, driving staircase is transferred.
Preferably, the lift control system stepping on car staircase of the present embodiment can also arrange adjustable throttle valve 32 between oil sources 21 and selector valve 22, wherein the first hydraulic fluid port of this adjustable restrictive valve 32 is connected with oil sources 21, second hydraulic fluid port of adjustable restrictive valve 32 is connected with the filler opening of three position four-way directional control valve 22, thus by regulating hydraulic flow, the rising or falling speed of staircase can be changed.Thus according to the requirement of user and the requirement of job site, staircase rising or falling speed is regulated.
In addition, in order to ensure the functional reliability of hydraulic lifting system, the lift control system stepping on car staircase of the present embodiment can also arrange equilibrium valve 33.This equilibrium valve 33 is arranged between hoist cylinder 23 and selector valve 22, the control port V1 of equilibrium valve 33 is connected with the pipeline between the first actuator port A of selector valve 22 and hoist cylinder rodless cavity, the oil outlet V2 of equilibrium valve is connected with the second actuator port B of selector valve 22, and the filler opening C2 of equilibrium valve is connected with the rod chamber of hoist cylinder 23.When performing staircase and transferring action, pressure in hoist cylinder 23 rod chamber is exactly the working pressure of hydraulic system, and under the effect of working pressure, equilibrium valve is just opened, hydraulic oil in the rodless cavity of hoist cylinder 23 refluxes after equilibrium valve and selector valve 22, forms circulation.In normal state, the non-vanishing or negative pressure of the pressure of rod chamber, equilibrium valve is opened.If rodless cavity connect tubing leak or break, hoist cylinder 23 piston glide, make the pressure in rod chamber be negative because the control end of equilibrium valve is connected with the rod chamber of hoist cylinder 23, equilibrium valve closedown.Thus make hoist cylinder 23 stop motion, thus support staircase stopping decline, and can not glide or slump suddenly, ensure that the job safety of engineering machinery and personnel.The lift control system stepping on car staircase of the present embodiment can also comprise one-way valve, is connected in parallel with equilibrium valve 33, and complex equilibrium valve uses.
More than stablize oil sources 21 and can provide power by Engine driven Hydraulic Pump or by motor-driven hydraulic pumps.When pressure oil is from the rod chamber of hoist cylinder 23, staircase is transferred; When pressure enters from the rod chamber of hoist cylinder 23, staircase is received.The embodiment of the present invention additionally provides a kind of lift control method stepping on car staircase, and this lift control method stepping on car staircase steps on the lift control system of car staircase for any one controlling above embodiment and provide.Fig. 4 is the schematic diagram stepping on the lift control method of car staircase according to the embodiment of the present invention, and as shown in the figure, this lift control method stepping on car staircase comprises:
Step S41, obtain operational order, this operational order comprises on staircase receives operational order and the instruction of staircase lowering operation;
Step S43, the run signal of Real-time Obtaining revolving dial;
Step S45, the adjustable height of Real-time Obtaining staircase;
Step S47, according to the run signal of operational order, revolving dial and the adjustable height of staircase, corresponding transmission controls the control signal of staircase elevating movement.
Particularly, in step S45, the adjustable height of Real-time Obtaining staircase specifically can comprise: the adjustable height being obtained staircase by the running position correspondence detecting piston in hoist cylinder 23.
Utilize in step S43 the run signal obtaining revolving dial, can judge whether revolving dial performs revolution action, utilize the adjustable height obtained in step S45, can judge whether adjustable height has reached the preset height of needs.
The control flow of step S47 is specifically as follows:
By the run signal of revolving dial, judge whether revolving dial performs revolution action, when revolving dial is performing revolution action, sending and control the control signal that staircase does not carry out elevating movement.When revolving dial does not perform revolution action, the control signal controlling staircase to be received or transfers action is sent according to operational order, by the adjustable height obtained in step S45, judge whether adjustable height has reached the preset height of needs, and when the adjustable height of staircase reaches preset height, send and control the control signal that staircase stops lifting.
Below in conjunction with flow chart respectively to a kind of upper receipts of concrete companionway with transfer control procedure and be described, the cylinder body of what this was concrete the step on hoist cylinder 23 of the lift control system of car staircase arranges two limit switches, wherein, first limit switch 251, for when piston runs to the first predeterminated position, change on off state; Second limit switch 252, for when piston runs to the second predeterminated position, changes on off state.Above first predeterminated position can be at the limit position close to rod chamber, and namely piston has arrived the end of rod chamber, and now staircase receives position; Second predeterminated position can be at the limit position close to rodless cavity, and namely piston has arrived the end of rodless cavity, and now the limit of hydraulic pressure installation transferred to by staircase.Order acquisition device 26 is arranged staircase receives button 261 and button 262 transferred by staircase.When user press staircase receives button 261 time, staircase is received button 261 and sends signal " 1 ", when user press staircase transfer button 262 time, staircase is transferred button 262 and is sent signal " 1 ".Its first limit switch 251 when piston runs to the first precalculated position, can send signal " 1 ", otherwise is " 0 ".Its second limit switch 252 when piston runs to the second precalculated position, can send signal " 1 ", otherwise is " 0 ".Rotation pressure switch, when revolving dial has action, sends signal " 1 ", when not turning round action, sends signal " 0 ".When the right position of its solenoid valve obtains electric, staircase is transferred, and when the left position of its solenoid valve obtains electric, staircase is received.
Fig. 5 transfers control flow chart according to the staircase stepping on the lift control method of car staircase of the embodiment of the present invention, when receiving after staircase transfers the signal " 1 " that button 262 sends, only when the second limit switch 252 sends " 0 " signal and the signal that rotation pressure switch sends is " 0 ", send electrical signal to the right position of selector valve 22.Thus control staircase is transferred.
Control flow chart received by the staircase stepping on the lift control method of car staircase according to the embodiment of the present invention to Fig. 6, after receiving and staircase receiving signal " 1 " that button 261 sends, only when the second limit switch 252 sends " 0 " signal and the signal that rotation pressure switch sends is " 0 ", send electrical signal to the left position of selector valve 22.Thus control staircase is received.
More than step on the controlling method of car staircase, by rotation pressure switch and limit switch collection signal, feed back to controller 24 simultaneously and send by controller 24 folding and unfolding that car staircase is stepped in control signal and then control through logical calculated and after controlling, convenient construction and facilitate staff to step on car, has higher reliability and Security.
Apply technological scheme of the present invention, controller 24 is utilized to receive the operational order of operator, control command is sent by selector valve 22 according to this operational order, change flow of pressurized and step on the lifting of car staircase to control hoist cylinder 23 action with realization, in control procedure, utilize position detecting device 25 to obtain the adjustable height of staircase in real time, and utilize rotation detecting 27 to obtain the run signal of revolving dial, when staircase operation puts in place or start to perform revolution action, timely control staircase stops lifting, avoid on the one hand hoist cylinder 23 to reach the limit of position and still perform the hydraulic energy loss that hydraulic driving causes, eliminate the potential safety hazard that companionway may cause when turning round on the other hand, thus enable staircase meet complicated working environment safely and reliably.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general computing device, they can concentrate on single computing device, or be distributed on network that multiple computing device forms, alternatively, they can realize with the executable program-code of computing device, thus, they can be stored and be performed by computing device in the storage device, or they are made into each integrated circuit module respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. step on the lift control system of car staircase for one kind, comprise oil sources, selector valve, hoist cylinder, wherein, described oil sources is used for providing fluid to described hoist cylinder, described selector valve is flowed to by the fluid of described hoist cylinder for changing, and the piston in described hoist cylinder is connected with staircase, is elevated for driving described staircase, it is characterized in that, also comprise:
Order acquisition device, for receiving the operational order that operator are elevated staircase;
Position detecting device, for detecting the adjustable height of staircase;
Rotation detecting, for detecting the run signal of revolving dial;
Controller, be connected respectively with the control end of described selector valve, described order acquisition device, described position detecting device, described rotation detecting, this controller is for obtaining described operational order, and the adjustable height of the run signal of revolving dial described in Real-time Obtaining and described staircase, according to the run signal of described revolving dial and the adjustable height of described staircase, the control end to described selector valve sends the control signal controlling described staircase elevating movement.
2. the lift control system stepping on car staircase according to claim 1, it is characterized in that, described position detecting device is arranged on the cylinder body of described hoist cylinder, obtains the adjustable height of staircase for the running position correspondence by detecting piston in described hoist cylinder.
3. the lift control system stepping on car staircase according to claim 1, is characterized in that, described position detecting device comprises:
Multiple limit switch, is separately positioned on the position of the different adjustable heights of corresponding staircase, to detect the adjustable height of described staircase.
4. the lift control system stepping on car staircase according to claim 1, is characterized in that, described order acquisition device comprises:
Button received by staircase, for obtaining operational order operator receiving staircase;
Button transferred by staircase, transfers the operational order of staircase for obtaining operator.
5. the lift control system stepping on car staircase according to claim 1, it is characterized in that, described rotation detecting is rotation pressure switch, according to the output state of described rotation pressure switch, described controller is also for judging whether described revolving dial performs revolution action.
6. the lift control system stepping on car staircase according to any one of claim 1 to 5, it is characterized in that, described selector valve comprises filler opening, return opening, the first actuator port and the second actuator port, wherein said filler opening is connected with described oil sources, described return opening connects fuel tank, described first actuator port is connected with the rodless cavity of described hoist cylinder, and described second actuator port is connected with the rod chamber of described hoist cylinder;
When described selector valve is positioned at the first working position, the rod chamber of described hoist cylinder is communicated with described fuel tank, and the rodless cavity of described hoist cylinder is communicated with described oil sources, and described staircase performs and transfers motion; When described selector valve is positioned at the second working position, the rodless cavity of described hoist cylinder is communicated with described fuel tank, and the rod chamber of described hoist cylinder is communicated with described oil sources, and described staircase receives motion on performing; When described selector valve is positioned at the 3rd working position, the rod chamber of described hoist cylinder is not all communicated with described oil sources or described fuel tank with rodless cavity.
7. the lift control system stepping on car staircase according to claim 6, is characterized in that, also comprise:
Adjustable restrictive valve, is arranged between described oil sources and described selector valve, and the first hydraulic fluid port of described adjustable restrictive valve is connected with described oil sources, and the second hydraulic fluid port of described adjustable restrictive valve is connected with the filler opening of described selector valve.
8. the lift control system stepping on car staircase according to claim 6, is characterized in that, also comprise:
Equilibrium valve, be arranged between described hoist cylinder and described selector valve, the oil outlet of described equilibrium valve is connected with the second actuator port of selector valve, the control port of described equilibrium valve is connected with the pipeline between the first actuator port of described selector valve and the rodless cavity of described hoist cylinder, and the filler opening of described equilibrium valve is connected with the rod chamber of described hoist cylinder.
9. the lift control system stepping on car staircase according to claim 8, is characterized in that, also comprise:
One-way valve, is connected in parallel with described equilibrium valve.
10. step on a lift control method for car staircase, it is characterized in that, comprising:
Obtain operational order by order acquisition device, described operational order comprises on staircase receives operational order and the instruction of staircase lowering operation;
By the run signal of position detecting device Real-time Obtaining revolving dial;
By the adjustable height of rotation detecting Real-time Obtaining staircase;
According to the run signal of described operational order, described revolving dial and the adjustable height of described staircase, corresponding transmission controls the control signal of described staircase elevating movement.
11. lift control methods stepping on car staircase according to claim 10, it is characterized in that, according to the run signal of described operational order, described revolving dial and the adjustable height of described staircase, the control signal that corresponding transmission controls described staircase elevating movement comprises:
When described revolving dial is performing revolution action, sending and controlling the control signal that described staircase does not carry out elevating movement.
12. lift control methods stepping on car staircase according to claim 10, it is characterized in that, according to the run signal of described operational order, described revolving dial and the adjustable height of described staircase, the control signal that corresponding transmission controls described staircase elevating movement comprises:
When described revolving dial does not perform revolution action, send the control signal controlling staircase to be received or transfers action according to described operational order, and when the adjustable height of described staircase reaches preset height, send and control the control signal that staircase stops lifting.
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| CN201310065863.2A CN103148060B (en) | 2013-01-09 | 2013-01-09 | Step on lift control system and the controlling method of car staircase |
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| CN201310065863.2A CN103148060B (en) | 2013-01-09 | 2013-01-09 | Step on lift control system and the controlling method of car staircase |
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| CN103925261B (en) * | 2014-04-10 | 2015-11-18 | 中煤科工集团西安研究院有限公司 | A kind of rig electrichydraulic control anticollision device |
| CN105041191A (en) * | 2015-07-01 | 2015-11-11 | 滁州市恒信工贸有限公司 | Hydraulic supporting cat ladder |
| CN107131164A (en) * | 2017-05-23 | 2017-09-05 | 上海应用技术大学 | The hydraulic control system and method for elevating mechanism |
| CN109765218B (en) * | 2017-11-09 | 2022-04-12 | 深圳市新产业生物医学工程股份有限公司 | Control method and system of consumable box storage device and consumable box storage device |
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| CN1703559A (en) * | 2002-10-08 | 2005-11-30 | 沃尔沃建造设备控股（瑞典）有限公司 | A method and a device for controlling a vehicle and a computer program for performing the method |
| CN202089695U (en) * | 2011-05-17 | 2011-12-28 | 徐州昊意工程机械科技有限公司 | Hydraulic system for lorry-mounted crane |
| CN102400476A (en) * | 2011-10-28 | 2012-04-04 | 山河智能装备股份有限公司 | Hydraulic circuit controlling preferred movement of moveable arm to lift or rotate |
| CN102502409A (en) * | 2011-11-08 | 2012-06-20 | 中国矿业大学 | Horizontal pinned hydraulic system of crawler crane counterweight |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007048697A1 (en) * | 2007-10-11 | 2009-04-16 | Deere & Company, Moline | Hydraulic lifting device |
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| CN87100435A (en) * | 1986-01-25 | 1987-09-16 | 日立建机株式会社 | The hydraulic transmission of engineering machinery |
| US5497805A (en) * | 1993-05-07 | 1996-03-12 | Hitachi Construction Machinery Co., Ltd. | Drive control system for hydraulic machine |
| CN1703559A (en) * | 2002-10-08 | 2005-11-30 | 沃尔沃建造设备控股（瑞典）有限公司 | A method and a device for controlling a vehicle and a computer program for performing the method |
| CN202089695U (en) * | 2011-05-17 | 2011-12-28 | 徐州昊意工程机械科技有限公司 | Hydraulic system for lorry-mounted crane |
| CN102400476A (en) * | 2011-10-28 | 2012-04-04 | 山河智能装备股份有限公司 | Hydraulic circuit controlling preferred movement of moveable arm to lift or rotate |
| CN102502409A (en) * | 2011-11-08 | 2012-06-20 | 中国矿业大学 | Horizontal pinned hydraulic system of crawler crane counterweight |
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| CN103148060A (en) | 2013-06-12 |
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