CN102190247B - Hydraulic pilot control system and hydraulic pilot crane provided with same - Google Patents

Hydraulic pilot control system and hydraulic pilot crane provided with same Download PDF

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Publication number
CN102190247B
CN102190247B CN 201110121407 CN201110121407A CN102190247B CN 102190247 B CN102190247 B CN 102190247B CN 201110121407 CN201110121407 CN 201110121407 CN 201110121407 A CN201110121407 A CN 201110121407A CN 102190247 B CN102190247 B CN 102190247B
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CN
China
Prior art keywords
control
hydraulic pilot
hydraulic
handle
oil circuit
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CN 201110121407
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Chinese (zh)
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CN102190247A (en
Inventor
李丰
周斌
颜理
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三一汽车起重机械有限公司
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Priority to CN 201110121407 priority Critical patent/CN102190247B/en
Publication of CN102190247A publication Critical patent/CN102190247A/en
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Publication of CN102190247B publication Critical patent/CN102190247B/en

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Abstract

The invention discloses a hydraulic pilot control system and a hydraulic pilot crane provided with the same. The hydraulic pilot control system comprises a plurality of main oilways, a plurality of control oilways, one or a plurality of hydraulic pilot handles, a master control electromagnetic valve and a plurality of position sensors, wherein the plurality of main oilways are respectively connected to corresponding execution mechanisms, and a main valve is arranged in each main oilway; a hydraulic pilot valve is arranged in each control oilway which is connected to one main valve; each hydraulic pilot handle is connected to the hydraulic pilot valve and respectively conducts the control oilway where one hydraulic pilot valve is in when the hydraulic pilot handle is in each conduction position state; the master control electromagnetic valve is connected with all the control oilways; each position sensor is used for sensing one conduction position state of the hydraulic pilot handles and triggering a handle position signal. By means of the hydraulic control system disclosed by the invention, the cost of the hydraulic control system is reduced, the manufacturing and installing time of wire harnesses for protecting the electromagnetic valve is shorted, and fault points are also reduced.

Description

Hydraulic guide control system and be provided with the hydraulic pilot hoisting crane of this system
Technical field
The present invention relates to the fluid control field, relate in particular to a kind of Hydraulic guide control system and be provided with the hydraulic pilot hoisting crane of this system.
Background technology
At present, the little tonnage hoisting crane major part of the market mainstream is to adopt hydraulic way control, is exactly a kind of applications maturation, crane hydraulic control system widely such as the control system of hydraulic pilot hoisting crane.As depicted in figs. 1 and 2, its core constituent elements is hydraulic pilot handle, main valve 1 ', hydraulic pilot valve 2 ' and corresponding protection electromagnetic valve 4 '.Wherein, each main valve 1 ' is arranged in every working connection, and the conducting meeting of every working connection is so that the corresponding mechanics of hoisting crane carries out corresponding actions.Single hydraulic pilot handle can move to four direction in the plane, and produces four conduction position states.The hydraulic pilot handle is connected with hydraulic pilot valve 2 ', the hydraulic pilot handle when each conduction position state, the oil circuit control at a place in the conducting hydraulic pilot valve 2 '; And each hydraulic pilot valve 2 ' is connected with a main valve 1 ' respectively, controls the action of this main valve 1 ', and then controls conducting and the cut-off of corresponding working connection.Wherein the a1 ' among Fig. 1, a3 ', b1 ', b3 ' point is communicated with a1 ', a3 ', b1 ', b3 ' point among Fig. 2 respectively.Dotted line among Fig. 1 represents oil circuit control.
Four sense of motions of hydraulic pilot handle as shown in Figure 3, comprise+Y ,-Y ,+X and-the X four direction.The action of corresponding hoisting crane is hoisting when supposing the hydraulic pilot handle to the direction motion of-Y, this moment, the hydraulic principle of hoisting crane was: the hydraulic pilot handle is during to the motion of-Y-direction, the oil circuit control of conducting-Y-direction, produced a difference of pressure at valve core of main valve this moment, therefore spool produces displacement under this pressure-acting, corresponding working connection conducting, crane hoisting plays action.Its excess-three of hydraulic pilot handle direction action principle of work is identical therewith.Because hoisting crane can produce dangerous working condition unavoidably in artificial nonstandard operation; therefore namely will be to the people when making dangerous play; as produce (namely sensor senses is behind height spacing alarm signal) behind the height spacing alarm, utilize the control handle handle of the output control of controller or circuit to continue to make conservation treatment and occur to avoid dangerous to the-motion of Y-direction.The oil circuit control that the mode of this conservation treatment is generally at pilot handle increases by one by the protection electromagnetic valve of controller control; as shown in Figure 2; after namely the controller judgement of above-mentioned connection protection electromagnetic valve 4 ' is about to dangerous working condition occur; thereby this protection electromagnetic valve outage is cut off the hydraulic pressure pilot handle at the oil circuit control that this side up, reach the action protection of handle on this direction.
Because hoisting crane generally has two hydraulic pilot handles, therefore generally have the handle action of eight directions at least, therefore on oil circuit control, need at least eight protection electromagnetic valves to carry out middle action and process the safety guard-safeguard that can keep relevant action.This shows; this protected mode has caused a higher hydraulic control system cost; the assembling of hydraulic tubing, making and the set-up time of protection electromagnetic valve wire harness have been prolonged; also increased the pin resource occupation of controller; increase simultaneously the trouble point in the hoisting crane use procedure, also be unfavorable for the malfunction elimination in the past-sale service process.
Summary of the invention
The hydraulic pilot hoisting crane that technical matters to be solved by this invention provides a kind of Hydraulic guide control system and is provided with this system can greatly reduce the number of protecting electromagnetic valve, reduces the cost of control system, has simplified control system.
For solving the problems of the technologies described above, according to an aspect of the present invention, provide a kind of Hydraulic guide control system, comprising: many working connections, be connected to respectively corresponding actuating unit, be respectively arranged with a main valve in every working connection; Many oil circuit controls wherein are respectively arranged with a hydraulic pilot valve in every oil circuit control; Every oil circuit control is connected in the main valve, conducting and the cut-off of control main valve; One or more hydraulic pilot handles, wherein each hydraulic pilot handle is connected to a plurality of hydraulic pilot valves, and has a plurality of conduction position states; When each hydraulic pilot handle is in each conduction position state, the oil circuit control at a place in the difference conducting hydraulic pilot valve, this Hydraulic guide control system also comprises the master control electromagnetic valve, connects all oil circuit controls; A plurality of position transdusers, each position transduser is used for a conduction position state of sensing hydraulic pilot handle, and triggers the handle position signal; And electrical controller, be connected with the danger signal sensor that arranges on the actuating unit, and be connected with the master control electromagnetic valve with position transduser, when the handle position signal of the danger signal that receives the danger signal sensor and corresponding position transduser, control master control closed electromagnetic valve.
Further, position transduser is arranged on the hydraulic pilot handle.
Further, position transduser is pressure sensor, is arranged in each bar oil circuit control, in order to detect the oil pressure in each bar oil circuit control.
Further, also comprise the overhead control oil circuit that is connected with all oil circuit controls, the master control electromagnetic valve is arranged in the overhead control oil circuit.
Further, electrical controller also comprises controller, and this controller has the input pin that is connected with each position transduser and the output pin that is connected with the master control electromagnetic valve.
Further, each position transduser comprises: the first conductive part; The second conductive part arranges with the first conductive part interval; And interconnecting part; When the hydraulic pilot handle is in a conduction position state, contact simultaneously the first conductive part and the second conductive part corresponding to the interconnecting part in the position transduser of this conduction position state with the movement of hydraulic pilot handle.
Further, the first conductive part and the second conductive part all are fixed on the handle base of hydraulic pilot handle below; Interconnecting part is connected on the handle base of hydraulic pilot handle below by spring; Position transduser also comprises triggering section, be arranged on the hydraulic pilot handle, when the hydraulic pilot handle is in a conduction position state, accordingly triggering section with the movement of hydraulic pilot handle with spring-compressed, so that interconnecting part contacts the first conductive part and the second conductive part simultaneously.
According to a further aspect in the invention, also provide a kind of hydraulic pilot hoisting crane, it comprises the control system of above-mentioned any hydraulic pilot hoisting crane.
The present invention has following beneficial effect:
Comprise the master control electromagnetic valve that connects all oil circuit controls in the Hydraulic guide control of the present invention system; also be provided with simultaneously the position transduser for the conduction position state of sensing hydraulic pilot handle; like this; after the action of the corresponding mechanics of conducting of a certain working connection produces warning or danger; producing pulleying when for example crane hoisting plays action reports to the police; if at this moment the conduction position state that is in to the hydraulic pilot handle of position sensors sense is the conducting corresponding to the hydraulic pilot valve in the corresponding oil circuit control of working connection of hoisting crane action; namely the artificial operation hydraulic pilot handle that continues carries out the action of the hoisting crane of dangerous direction; then the controller in the system or control circuit can cut off the power supply of above-mentioned master control electromagnetic valve, protect.That is to say, by the cooperation of above-mentioned position transduser and master control electromagnetic valve, can realize control that dangerous play is limited, and need not in each bar oil circuit control, all to arrange a protection electromagnetic valve.Like this, just reduce the cost of hydraulic control system, reduced the wire harness of protection electromagnetic valve and made and the set-up time, also reduced the required trouble point of control system.
Except purpose described above, feature and advantage, the present invention also has other purpose, feature and advantage.The below is with reference to figure, and the present invention is further detailed explanation.
Description of drawings
Accompanying drawing is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the scheme drawing of oil circuit control in the Hydraulic guide control system of prior art;
Fig. 2 is the scheme drawing of working connection in the Hydraulic guide control system of prior art, shows in the lump the part oil circuit control among the figure;
Fig. 3 is the sense of motion scheme drawing of hydraulic pilot handle in the Hydraulic guide control system;
Fig. 4 is the structural representation according to hydraulic pilot handle in the Hydraulic guide control system of the first embodiment of the present invention;
Fig. 5 is the scheme drawing according to the oil circuit control of the Hydraulic guide control system of the first embodiment of the present invention;
Fig. 6 is the scheme drawing according to the working connection of the Hydraulic guide control system of the first embodiment of the present invention, shows in the lump the part oil circuit control among the figure;
Fig. 7 concerns block diagram according to the control between the each several part in the Hydraulic guide control system of the first embodiment of the present invention;
Fig. 8 is the control process figure when using Hydraulic guide control system according to the first embodiment of the present invention that the hydraulic pilot hoisting crane is controlled.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
Hydraulic guide control system according to the first embodiment of the present invention comprises: one or more hydraulic pilot handle 3, many oil circuit controls as shown in Figure 5, many working connections as shown in Figure 6 as shown in Figure 4.As can see from Figure 6, be respectively arranged with a main valve 1 in every working connection.In addition, every working connection is connected to respectively corresponding actuating unit, is provided with the danger signal sensor on the actuating unit, the action of sensing actuating unit, and when the action of actuating unit produces danger, send distress signal.As can see from Figure 5, be respectively arranged with a hydraulic pilot valve 2 in every oil circuit control; Every oil circuit control is connected in the main valve 1, conducting and the cut-off of control main valve 1, particularly, four oil circuit control a1, a3 among Fig. 5, b1, b3 are communicated with oil circuit control a1, a3, b1, b3 among Fig. 6 respectively, realize that each hydraulic pilot valve 2 is to the control of each main valve 1.Be appreciated that the corresponding oil circuit control that only shows four working connections among Fig. 6 among Fig. 5, other working connections are controlled by the oil circuit control identical with oil circuit control among Fig. 5 too.Each hydraulic pilot handle is connected to a plurality of hydraulic pilot valves 2; Return Fig. 4, can see, each hydraulic pilot handle 3 has a plurality of conduction position states, for example conducting state of A direction.When each hydraulic pilot handle 3 is in each conduction position state, the oil circuit control at a place in the difference conducting hydraulic pilot valve 2.In the present embodiment, the Hydraulic guide control system comprises two hydraulic pilot handles 3, each hydraulic pilot handle 3 has four conduction position states, oil circuit control a1, the a3 in four conduction position states difference corresponding diagram 5 of one of them hydraulic pilot handle 3, the conducting of the hydraulic pilot valve 2 among b1, the b3.In addition, among the present invention, as shown in Figure 5, this Hydraulic guide control system also comprises master control electromagnetic valve 4, a plurality of position transduser 31 and electrical controller (not shown).This master control electromagnetic valve 4 connects all oil circuit controls.Each position transduser 31 is used for a conduction position state of sensing hydraulic pilot handle 3, and triggers the handle position signal.The danger signal sensor that arranges on electrical controller and the above-mentioned corresponding actuating unit that is connected with working connection connects, and are connected with the master control electromagnetic valve with position transduser 31 and are connected, when the handle position signal of the danger signal that receives the danger signal sensor and corresponding position transduser, control master control electromagnetic valve 4 is closed.
Be appreciated that; when the action of the corresponding actuating unit of conducting of a certain working connection in this Hydraulic guide control system produce report to the police or danger after; take the hydraulic pilot hoisting crane as example; when for example the hoisting crane of hydraulic pilot hoisting crane moves; corresponding danger signal sensor produces pulleying and reports to the police; if at this moment to sense the conduction position state that hydraulic pilot handle 3 is in be conducting corresponding to the hydraulic pilot valve 2 in the corresponding oil circuit control of working connection of hoisting crane action to position transduser 31; namely position transduser 31 detects artificial action and continues the action that operation hydraulic pilot handle 3 attempts to carry out the hoisting crane of dangerous direction; then the electrical controller in the system (such as controller or control circuit) can cut off the power supply of above-mentioned master control electromagnetic valve 4, protects.That is to say; cooperation by above-mentioned danger signal sensor, position transduser 31 and master control electromagnetic valve 4; can realize control that dangerous play is limited, and need not in each bar oil circuit control, all to arrange a protection electromagnetic valve, with the break-make of each bar oil circuit control of independent control.Like this, just reduced the cost of hydraulic component and the cost of hydraulic control system, reduced the wire harness of protection electromagnetic valve and made and the set-up time, also reduced the required trouble point of control system, the malfunction elimination during for past-sale service provides convenient.
Can find out more intuitively that by Fig. 7 connection and control between this Hydraulic guide control system various piece concern.As shown in Figure 7, master control electromagnetic valve 4 and hydraulic pilot valve 2 all are connected to oil circuit control, and particularly, master control electromagnetic valve 4 is connected to all oil circuit controls controlling the break-make of all oil circuit controls, and each hydraulic pilot valve 2 is separately positioned in the oil circuit control.Oil circuit control is connected to the main valve 1 in the working connection, and particularly, each main valve 1 is separately positioned in the working connection.Every working connection is connected to respectively corresponding actuating unit.The danger signal sensor that is connected with electrical controller is set on the actuating unit, after the action that senses actuating unit is caused danger, produces corresponding danger signal to electrical controller.In addition, hydraulic pilot handle 3 is connected with hydraulic pilot valve 2, the opening and closing of control hydraulic pilot valve 2, be provided with the position transduser 31 that is connected with electrical controller on the hydraulic pilot handle 3, each position transduser 31 is used for a conduction position state of sensing hydraulic pilot handle 3, and trigger the handle position signal, the handle position signal is sent to electrical controller.Electrical controller also is connected with master control electromagnetic valve 4, and when the handle position signal of the danger signal that receives the danger signal sensor and corresponding position transduser, control master control electromagnetic valve (4) is closed, to protect.
In addition, as seen from the above, because the existence of position transduser 31, the operating state of the hydraulic pilot handle 3 among the present invention can read, if use the signal of controller receiving position sensor 31, after dangerous working condition occurring, if operating personal imperative operation corresponding actions, controller can record the course of action of hydraulic pilot handle 3.Like this, if safety misadventure occurs, can judge easily accident liability side by above-mentioned record.
This control system is that with respect to the difference of original control system mode in use the control process of former control system is a kind of process of static state; take the control hoisting crane as example; as after producing the pulleying warning; electrical controller then cuts off the handle pulleying and moves the protection power of electromagnetic valve of corresponding single oil circuit control; and the control process of the control system among the present invention is after hoisting crane is producing warning; only have the hydraulic pilot handle to continue when the dangerous play direction is moved, just to cut off the power supply of the master control electromagnetic valve 4 of all oil circuit controls; otherwise hoisting crane still can work; do not affect the use of all the other actions, dual mode control effect is similar.
As shown in Figure 4, in the present embodiment, position transduser 31 is arranged on the hydraulic pilot handle 3.Can be the sensor of any modes such as proximity transducer of the action of sensing hydraulic pilot handle 3.Position transduser is arranged on the handle, easily the location status of sensing handle.
Perhaps preferably, in practice, position transduser 31 also can be pressure sensor, is arranged in each bar oil circuit control, in order to detecting the oil pressure in each bar oil circuit control, and then indirectly judges the conduction position state of hydraulic pilot handle 3.
Preferably, as shown in Figure 5, in the present embodiment, the Hydraulic guide control system also comprises the overhead control oil circuit that is connected with all oil circuit controls, and master control electromagnetic valve 4 is arranged in the overhead control oil circuit.The master control electromagnetic valve 4 that is arranged so that of this overhead control oil circuit is connected to all oil circuits easily.
Preferably, in the present embodiment, electrical controller comprises the controller (not shown), and this controller has the input pin that is connected with each position transduser 31 and the output pin that is connected with master control electromagnetic valve 4.Like this; the alerting signal that this controller can produce according to the action from the corresponding mechanics of conducting of the signal of each position transduser 31 sensings and each working connection in this Hydraulic guide control system is controlled in good time and is closed master control electromagnetic valve 4; control protection, prevent that operating personal from carrying out maloperation and the generation accident at unsafe condition to the hydraulic pilot handle.
Preferably, in the present embodiment, as shown in Figure 4, each position transduser 31 comprises: the first conductive part 311, the second conductive part 312 and interconnecting part 313.Wherein, the second conductive part 312 and the first conductive part 311 intervals arrange.When hydraulic pilot handle 3 is in a conduction position state, contact simultaneously the first conductive part 311 and second conductive part 312 of this position transduser 31 with the movement of hydraulic pilot handle 3 corresponding to the interconnecting part 313 in the position transduser 31 of this conduction position state.Such the first conductive part 311 and the second conductive part 312 namely are communicated with, during practical application, the 24V+ signal that can for example the signal wire (SW) 315 at the first conductive part 311 places be connected the 24V power supply, and the second conductive part 312 is connected to a switching value input pin of controller, when the first conductive part 311 and 312 connection of the second conductive part, this switching value input pin of controller receives has the 24V+ signal.This sensor construction is simple, and is easy for installation.Certainly, in actual applications, can also use the sensor such as any type of suitable detection handle positions such as proximity transducers.
In the present embodiment, the first conductive part 311 and the second conductive part 312 all are fixed on the handle base of hydraulic pilot handle 3 belows; Interconnecting part 313 is connected on the handle base of hydraulic pilot handle 3 belows by spring, and spaced apart with the first conductive part 311 and the second conductive part 312.As shown in Figure 4, position transduser 31 also comprises triggering section 314, this triggering section 314 is arranged on the hydraulic pilot handle, when hydraulic pilot handle 3 is in a conduction position state, corresponding triggering section 314 with the movement of hydraulic pilot handle 3 with spring-compressed, so that interconnecting part 313 contacts the first conductive part 311 and the second conductive part 312 simultaneously.Utilize the cooperation of triggering section 314 and spring, realize that interconnecting part 313 is communicated with the first conductive part 311 and the second conductive part 312, this is simple for structure.
According to another aspect of the present invention, also provide a kind of hydraulic pilot hoisting crane, this hydraulic pilot hoisting crane comprises above-mentioned any Hydraulic guide control system.As seen from the above, the control system cost of this hydraulic pilot hoisting crane is lower, has reduced the wire harness of protection electromagnetic valve and has made and the set-up time, has also reduced the required trouble point of control system, and the malfunction elimination during for past-sale service provides convenient.
Certainly, the field of application of the Hydraulic guide control system among the present invention is not limited to the hydraulic pilot hoisting crane, and other various mechanical equipments that use hydraulic pilot system of the present invention and hydraulic pilot handle thereof to control all fall within the scope of the present invention.
In the present embodiment, choose the hydraulic pilot hoisting crane at three kinds of dangerous working conditions of easy appearance, pulleying, cross and put, overload when occuring, the control process when using Hydraulic guide control of the present invention system that it is controlled.As shown in Figure 7, this control process may further comprise the steps:
Step S101: open hoisting crane.
Step S102: the master control electromagnetic valve gets electric.Particularly, after the normal unlatching of hoisting crane, master control electromagnetic valve 4 gets electric and opens, thereby can be with all oil circuit control cut-offs, hoisting crane is in normal working, can and then control conducting and the cut-off of each bar oil circuit control and each bar working connection by control hydraulic pilot handle 3, and then control the corresponding various actions of hoisting crane.
Step S103: dangerous working condition is judged.Particularly, the situation that is provided with controller in the crane control system is reported to the police if produce when hoisting crane moves as example, and namely controller receives alerting signal, and then controller is judged the kind of dangerous working condition according to alerting signal.
1. if alerting signal is that the hoisting crane pulleying is reported to the police, then enter step S104a: dangerous play 1 is judged.Particularly, this dangerous play 1 is judged, and corresponding crane hoisting that whether be the decision operation personnel make hydraulic pilot handle 3 be in to the direction of operating of handle plays the conduction position of action, namely, if operating personal operation hydraulic pilot handle 3, make it to be in hydraulic pilot valve 2 conductings on the oil circuit control that makes the crane hoisting action, and then the conduction position of the working connection conducting of corresponding elevator action, then the position transduser on the corresponding conduction position 31 can trigger corresponding handle position signal.If controller receives this corresponding handle position signal, then the result of this dangerous play 1 judgement is "Yes"; If controller does not receive this corresponding handle position signal, then the result of this dangerous play 1 judgement is "No".
If judged result is "Yes", then enter step S105: master control electromagnetic valve dead electricity.Like this all oil circuit control cut-offs, the action that corresponding crane hoisting rises namely is prevented from.If of course it is to be understood that operating personal control this moment hydraulic pilot handle 3 is to all the other conduction position actions, then respective roll kick up the action the handle position blackout, the judged result of dangerous play 1 becomes "No", and the master control electromagnetic valve gets electric, and hoisting crane can also carry out other actions.
2. if alerting signal is that overload crane is reported to the police, then enter step S104c: dangerous play 3 is judged.Particularly, this dangerous play 3 is judged, and corresponding crane amplitude variation that whether be the decision operation personnel make hydraulic pilot handle 3 be in to the direction of operating of handle falls, large arm is stretched the conduction position of the action that waits any one increase moment percentum, namely, if operating personal operation hydraulic pilot handle 3, make it to be in hydraulic pilot valve 2 conductings on the oil circuit control of the action that makes hoisting crane increase the moment percentum, and then the conduction position of the working connection conducting of the action of corresponding increase moment percentum, then the position transduser on the corresponding conduction position 31 can trigger corresponding handle position signal.If controller receives this corresponding handle position signal, then the result of these dangerous play 3 judgements is "Yes"; If controller does not receive this corresponding handle position signal, then the result of these dangerous play 3 judgements is "No".
If judged result is "Yes", then enter step S105: master control electromagnetic valve dead electricity.Like this all oil circuit control cut-offs, the action that corresponding hoisting crane increases the moment percentum namely is prevented from.If of course it is to be understood that operating personal control this moment hydraulic pilot handle 3 is to all the other conduction position actions, then respective roll kick up the action the handle position blackout, the judged result of dangerous play 3 becomes "No", and the master control electromagnetic valve gets electric, and hoisting crane can also carry out other actions.
3. if alerting signal is that hoisting crane is crossed and put warning, then enter step S104b: dangerous play 2 is judged.Concrete judgement and control process and aforementioned two kinds of processes are similar, do not repeat them here.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and 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 modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (8)

1. Hydraulic guide control system comprises:
Many working connections are connected to respectively corresponding actuating unit, are respectively arranged with a main valve (1) in every described working connection;
Many oil circuit controls, wherein
Be respectively arranged with a hydraulic pilot valve (2) in every described oil circuit control;
Every described oil circuit control is connected in the described main valve (1), controls conducting and the cut-off of described main valve (1);
One or more hydraulic pilot handles (3), wherein
Each described hydraulic pilot handle (3) is connected to a plurality of described hydraulic pilot valves (2), and has a plurality of conduction position states;
When each described hydraulic pilot handle (3) is in each conduction position state, the oil circuit control at a place in the difference described hydraulic pilot valve of conducting (2),
It is characterized in that, also comprise:
Master control electromagnetic valve (4) connects all described oil circuit controls;
A plurality of position transdusers (31), each described position transduser (31) is used for a conduction position state of the described hydraulic pilot handle of sensing (3), and triggers the handle position signal; And
Electrical controller, be connected with the danger signal sensor that arranges on the described actuating unit, and with described position transduser (31) be connected master control electromagnetic valve (4) and be connected, when the handle position signal of the danger signal that receives described danger signal sensor and corresponding described position transduser, control described master control electromagnetic valve (4) and close.
2. Hydraulic guide control according to claim 1 system is characterized in that described position transduser (31) is arranged on the described hydraulic pilot handle (3).
3. Hydraulic guide control according to claim 1 system is characterized in that described position transduser (31) is pressure sensor, is arranged in described each bar oil circuit control, in order to detect the oil pressure in described each bar oil circuit control.
4. Hydraulic guide control according to claim 1 system is characterized in that also comprise the overhead control oil circuit that is connected with all described oil circuit controls, described master control electromagnetic valve (4) is arranged in the described overhead control oil circuit.
5. Hydraulic guide control according to claim 1 system, it is characterized in that, described electrical controller comprises controller, and described controller has the input pin that is connected with each described position transduser (31) and the output pin that is connected with described master control electromagnetic valve (4).
6. Hydraulic guide control according to claim 2 system is characterized in that,
Each described position transduser (31) comprising:
The first conductive part (311);
The second conductive part (312) arranges with described the first conductive part (311) interval; And
Interconnecting part (313);
When described hydraulic pilot handle (3) is in a conduction position state, contact simultaneously the first conductive part (311) and the second conductive part (312) corresponding to the interconnecting part (313) in the described position transduser (31) of this conduction position state with the movement of described hydraulic pilot handle (3).
7. Hydraulic guide control according to claim 6 system is characterized in that,
Described the first conductive part (311) and described the second conductive part (312) all are fixed on the handle base of described hydraulic pilot handle (3) below;
Described interconnecting part (313) is connected on the handle base of described hydraulic pilot handle (3) below by spring;
Described position transduser (31) also comprises triggering section (314), be arranged on the described hydraulic pilot handle (3), when described hydraulic pilot handle (3) is in a conduction position state, corresponding described triggering section (314) with the movement of described hydraulic pilot handle (3) with described spring-compressed, so that described interconnecting part (313) contacts described the first conductive part (311) and described the second conductive part (312) simultaneously.
8. a hydraulic pilot hoisting crane is characterized in that, comprises the control system of any one the described hydraulic pilot hoisting crane among the claim 1-7.
CN 201110121407 2011-05-11 2011-05-11 Hydraulic pilot control system and hydraulic pilot crane provided with same CN102190247B (en)

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CN103612988B (en) * 2013-11-29 2015-05-20 大连元利流体技术有限公司 Air-controlled return circuit of semiautomatic delivery system

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