CN203529851U - Winch control balance valve device, crane winch hydraulic system and crane - Google Patents
Winch control balance valve device, crane winch hydraulic system and crane Download PDFInfo
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- CN203529851U CN203529851U CN201320612892.1U CN201320612892U CN203529851U CN 203529851 U CN203529851 U CN 203529851U CN 201320612892 U CN201320612892 U CN 201320612892U CN 203529851 U CN203529851 U CN 203529851U
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- oil
- electromagnetic valve
- valve
- pressure
- winch
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Abstract
The utility model relates to a winch control balance valve device, a crane winch hydraulic system and a crane. The winch control balance valve device comprises a balance valve, a solenoid valve and a controller, in the ascending and descending processes of a winch, pressure oil in a first main oil way or in a second main oil way enters the balance valve, and the balance valve is opened; in the descending process of the winch, the pressure oil in the first main oil way enters a brake through a first oil inlet and a first oil outlet of the solenoid valve, and in the ascending process of the winch, pressure oil of a pressure oil source is made to enter the brake through a second oil inlet and a second oil outlet of the solenoid valve. According to the winch control balance valve device, the crane winch hydraulic system and the crane, in the descending process of the winch, the timing sequence of the hydraulic system self is used for controlling the winch brake to be turned on or turned off, it is avoided that the brake is turned on or turned off from time to time to cause shaking of the system, in the ascending process of the winch, the external oil source is used for controlling the winch brake to be turned on or turned off, heavy loads of the winch are effectively prevented from being hoisted or slidden down for the second time, reliability is improved, and the winch system is more compact.
Description
Technical field
The utility model relates to technical field of engineering machinery, is specifically related to a kind of rolling control balancing valve apparatus, crane hoisting hydraulic efficiency pressure system and hoisting crane.
Background technology
Hoisting crane, for example medium and small tonnage wheel crane, generally adopts balance cock to add the open type hydraulic system hoisting mechanism of drg.Drg is when preventing that motor is static, and back oil cavity pressure is too high to be caused and to obtain motor internal leakage and increase, and causes load slip, has guaranteed that motor is braked completely and the normally closed hydraulic brake that adopts.The mode that drg is opened mainly contains two kinds: the automatically controlled mode that oil sources is external and oil sources are taken at the hydraulic control mode of working connection A ', B ' mouthful.
For example, as shown in Figure 1, drg unfolding mode is the external automatically controlled mode of oil sources, and brake control valve X mouth connects one and stablizes oil sources, by controlling the energising of brake control valve-Y1 and the opening and closing that power-off realizes hoist brake 3.In hoisting crane motion (zero clearing of pressure memory value) start-up course, by programming control, brake control valve-Y1 switches on, make drg opening time have precedence over balance cock opening time, to prevent opening the compression shock causing after the initial drg of hoisting crane, while again hoisting after heavy-duty lifting certain altitude simultaneously, pressure while once rising before remembering by system program, only have and arrive a front memory pressure when the open pressure of A ' of hoisting hydraulic system, drg is just opened, and actv. has prevented that weight from playing the double slide of motion.When elevator falls in motion actuated process, the pressure falling mouthful is opened balance cock, and programming control brake control valve-Y1 energising guarantees that drg opening time has precedence over balance cock opening time, closes and the elevator shake that causes while opening while having avoided drg.Hoisting crane and falling in motion stopped process, by programming control, balance cock is first closed, after control again brake control valve-Y1 power-off drg closed, prevented that drg from closing the system pressure fluctuation early causing larger, cause rocking of car load.
The external automatically controlled mode of oil sources need be controlled respectively hoisting crane start-up course, hoisting crane stopped process, elevator start-up course and the elevator stopped process that falls that falls, and control program is more complicated, easily makes mistakes; Adopt oil sources to be taken at the hydraulic control mode of working connection A ', B ' mouthful, in hoisting crane start-up course, due to the impact that load produces motor oil back chamber, while having caused, pressure is opened balance cock after first opening drg again, but during heavy duty, because drg is opened pressure and is far smaller than and overcomes the pressure that load is fallen, this will cause drg to be opened too early, and load drives motor to rotate backward, and weight can fall lentamente, particularly during heavily loaded secondary lifting, more obvious.
Therefore, need a kind of novel winch control device.
Utility model content
The purpose of this utility model is to propose a kind of rolling control balancing valve apparatus, uses the time schedule control hoist brake of hydraulic efficiency pressure system itself in elevator falls motion process, uses the automatically controlled control hoist brake of external oil sources in hoisting crane process.
A rolling control balancing valve apparatus, comprising: balance cock, electromagnetic valve and controller; In the process that falls, rises at elevator, pass through respectively the first working connection, the second working connection by pressure oil input hydraulic pressure motor; Described balance cock communicates with described the first working connection and described the second working connection respectively by oil pipe, and in the process that falls, rises at elevator, the pressure oil in described the first working connection or described the second working connection enters described balance cock, and opens described balance cock; The first oil inlet of described electromagnetic valve communicates with described the first working connection by oil pipe, and the second oil inlet of described electromagnetic valve is by oil pipe cut-in pressure oil sources; In the process falling at elevator, described controller is controlled described electromagnetic valve and is opened the first oil inlet, makes pressure oil in described the first working connection enter drg by the first oil inlet and the oil outlet of described electromagnetic valve, and opens described drg; Wherein, the oil pressure threshold value of opening of described balance cock is opened oil pressure threshold value higher than described drg; In the process that elevator rises, described controller is controlled described electromagnetic valve and is opened the second oil inlet, and the pressure oil that makes described pressure oil-source enters drg by the second oil inlet and the oil outlet of described electromagnetic valve, and opens described drg.
According to an embodiment of the present utility model, further, also comprise: shuttle valve; Described shuttle valve is arranged in the oil circuit that the first oil inlet of described electromagnetic valve communicates with described the first working connection, and in described the first working connection, pressure oil enters the first oil inlet of described electromagnetic valve by described shuttle valve.
According to an embodiment of the present utility model, further, also comprise: reducing valve; Described reducing valve is arranged in the oil circuit that the first oil inlet of described electromagnetic valve communicates with described the first working connection, and in described the first working connection, pressure oil enters the first oil inlet of described electromagnetic valve by described reducing valve.
According to an embodiment of the present utility model, further, described electromagnetic valve is direct-acting electromagnetic valve or guide electromagnetic valve.
According to an embodiment of the present utility model, further, described balance cock is static balancing valve or dynamic balance valve.
A crane hoisting hydraulic efficiency pressure system, comprises rolling control balancing valve apparatus as above.
A hoisting crane, comprises crane hoisting hydraulic efficiency pressure system as above.
Rolling control balancing valve apparatus of the present utility model, crane hoisting hydraulic efficiency pressure system and hoisting crane, in falling motion process, uses elevator the time schedule control hoist brake of hydraulic efficiency pressure system itself, while opening while having avoided drg, close the thrashing causing, in hoisting crane process, use the automatically controlled control hoist brake of external oil sources simultaneously, effectively prevented elevator heavy duty secondary lifting and sliding, improved the reliability of system, conventional balanced valve and electromagnetic valve (brake control valve) are combined on a valve, make hoisting system structure compacter.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, forms the application's a part, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is hoisting hydraulic system schematic diagram of the prior art;
Fig. 2 A and 2B are according to the schematic diagram of rolling control balancing valve apparatus of the present utility model embodiment; Fig. 2 A is the constructional drawing of rolling control balancing valve apparatus, and Fig. 2 B is the control principle drawing of rolling control balancing valve apparatus;
Wherein: 1-hoist motor, 2-balance cock, 3-drg, 4-electromagnetic valve (brake control valve).
The specific embodiment
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
It should be noted that: any technical characterictic in the present embodiment, any technical scheme is all the technical characterictic of plurality of optional or one or more in optional technical scheme, cannot exhaustive all alternative technical characterictics of the present utility model and alternative technical scheme in order to describe succinct need in presents, also the embodiment that is not easy to each technical characterictic all emphasizes that it is one of optional numerous embodiments, so those skilled in the art should know: any technical characterictic in the present embodiment and any technical scheme all do not limit protection domain of the present utility model, protection domain of the present utility model should comprise that those skilled in the art do not pay the thinkable any alternate embodiments of creative work.
Below in order to narrate conveniently, hereinafter alleged " left side ", " right side ", " on ", left and right, the upper and lower of D score and accompanying drawing itself is to consistent.
As shown in Figure 2 A and 2B, rolling control balancing valve apparatus comprises: balance cock 12, electromagnetic valve 11(brake control valve) and controller (not shown in FIG.).Balance cock is for preventing load free fall, to keep the pressure-gradient control valve of back pressure.
In the process that falls, rises at elevator, pass through respectively the first working connection A mouth, the second working connection B mouth by pressure oil input hydraulic pressure motor 21.
The first oil inlet of electromagnetic valve 11 with by oil pipe, communicate with the first working connection A, and the second oil inlet X1 of electromagnetic valve 11 is by oil pipe cut-in pressure oil sources.In the process falling at elevator, controller is controlled electromagnetic valve 11 and is opened the first oil inlet, makes pressure oil in the first working connection by X mouth, and the first oil inlet of electromagnetic valve and oil outlet enter drg 22.The oil pressure threshold value of opening of balance cock 12 is opened oil pressure threshold value higher than drg 22.
In the process that elevator rises, controller is controlled electromagnetic valve 11 and is opened the second oil inlet, and the pressure oil that makes pressure oil-source enters drg 22 by the second oil inlet and the oil outlet of electromagnetic valve.
Rolling control balancing valve apparatus of the present utility model, the opening and closing of the time schedule control hoist brake that uses hydraulic efficiency pressure system itself in elevator falls process have been realized, the thrashing of closing while opening while having avoided drg and causing, simultaneously in hoisting crane process, use the opening and closing of the automatically controlled control hoist brake of external oil sources, effectively prevent elevator heavy duty secondary lifting and sliding, improved the reliability of system.
At elevator, fall in motion process, the pressure of hoist brake is taken at the mouth pressure that falls of hoisting system, because the opening and closing pressure of balance cock 12 is higher than drg 22, therefore fall when starting, mouth pressure is first opened drg, after open again balance cock, prevent drg from not opening completely and balance cock is opened, caused the elevator shake that falls.At elevator, fall in stopped process, first close balance cock, then close drg, effectively prevented that drg from closing early and the system pressure fluctuation that causes is larger, cause rocking of car load.
In hoisting crane motion process, the mode that hoist brake is opened is the external automatically controlled mode of oil sources, and electromagnetic valve X1 mouth connects one and stablizes oil sources, by controller, controls the energising of electromagnetic valve-Y1 and the opening and closing that power-off realizes hoist brake.
According to an embodiment of the present utility model, shuttle valve 13 is arranged in the oil circuit that the first oil inlet of electromagnetic valve communicates with the first working connection, and in the first working connection, pressure oil enters the first oil inlet of electromagnetic valve 11 by shuttle valve.Also shuttle valve 13 can be set, make the pressure oil of pressure oil-source by the second oil inlet and the oil outlet of electromagnetic valve 11, through shuttle valve, by T mouth, enter drg 22.
According to an embodiment of the present utility model, reducing valve 14 is arranged in the oil circuit that the first oil inlet of electromagnetic valve communicates with the first working connection, and in the first working connection, pressure oil enters the first oil inlet of electromagnetic valve 11 by reducing valve 14.
According to an embodiment of the present utility model, in the process rising at elevator, controller, after drg is opened, is controlled balance cock and is opened.Controller is stored the pressure that hoists, while again hoisting after winding lifting certain altitude, when controller judges that the pressure of the second working connection reaches previous and hoists during pressure, controller is controlled electromagnetic valve and is opened the second oil inlet, the pressure oil that makes pressure oil-source enters drg by the second oil inlet and the oil outlet of electromagnetic valve, opens drg.
According to an embodiment of the present utility model, in hoisting crane motion (zero clearing of pressure memory value) start-up course, by programming control, brake control valve-Y1 switches on, make drg opening time have precedence over balance cock opening time, prevented that hoisting crane drg from not opening the compression shock causing, while again hoisting after heavy-duty lifting certain altitude simultaneously, pressure while once rising before remembering by system program, only have and arrive a front memory pressure when the open pressure of A of hoisting hydraulic system, drg is just opened, and actv. has prevented that weight from playing the double slide of motion.
According to an embodiment of the present utility model, electromagnetic valve is direct-acting electromagnetic valve or guide electromagnetic valve.Balance cock is static balancing valve or dynamic balance valve.
According to an embodiment of the present utility model, a kind of crane hoisting hydraulic efficiency pressure system, comprises rolling control balancing valve apparatus as above.
According to an embodiment of the present utility model, a kind of hoisting crane, comprises crane hoisting hydraulic efficiency pressure system as above.
" first " in the utility model, " second " etc. are distinguished on describing, and there is no other particular meaning.
The advantage of the rolling control balancing valve apparatus in the utility model, crane hoisting hydraulic efficiency pressure system and hoisting crane is as follows:
1, rise and fall and control respectively, reliability is high
In falling motion process, uses elevator the opening and closing of the time schedule control hoist brake of hydraulic efficiency pressure system itself, while opening while having avoided drg, close the thrashing causing, in hoisting crane process, use the opening and closing of the automatically controlled control hoist brake of external oil sources simultaneously, effectively prevent elevator heavy duty secondary lifting and sliding, improved the reliability of system.
2, compact conformation
Innovative design novel balance valve, is combined in conventional balanced valve and electromagnetic valve (brake control valve) on a valve, makes hoisting system structure compacter.
Above-mentioned arbitrary technical scheme disclosed in the utility model unless otherwise stated, if it discloses number range, so disclosed number range is preferred number range, any it should be appreciated by those skilled in the art: preferred number range is only the obvious or representative numerical value of technique effect in many enforceable numerical value.Because numerical value is more, cannot be exhaustive, so the utility model just discloses part numerical value with casehistory the technical solution of the utility model, and the above-mentioned numerical value of enumerating should not form the restriction of the utility model being created to protection domain.
In addition, in the disclosed arbitrary technical scheme of above-mentioned the utility model applied for the term that represents position relationship or shape unless otherwise stated its implication comprise and its approximate, similar or approaching state or shape.Arbitrary parts that the utility model provides can be both to be assembled by a plurality of independent component parts, the produced separate part of the technique that also can be one of the forming.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit.Although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the field are to be understood that: still can modify or part technical characterictic is equal to replacement the specific embodiment of the present utility model; And not departing from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technical scheme scope that the utility model asks for protection.
Claims (7)
1. a rolling control balancing valve apparatus, is characterized in that, comprising:
Balance cock, electromagnetic valve and controller;
In the process that falls, rises at elevator, pass through respectively the first working connection, the second working connection by pressure oil input hydraulic pressure motor;
Described balance cock communicates with described the first working connection and described the second working connection respectively by oil pipe; In the process that falls, rises at elevator, the pressure oil in described the first working connection or described the second working connection enters described balance cock, and opens described balance cock;
The first oil inlet of described electromagnetic valve communicates with described the first working connection by oil pipe, and the second oil inlet of described electromagnetic valve is by oil pipe cut-in pressure oil sources;
In the process falling at elevator, described controller is controlled described electromagnetic valve and is opened the first oil inlet, makes the pressure oil in described the first working connection enter drg by the first oil inlet of described electromagnetic valve and the oil outlet of described electromagnetic valve, and opens described drg; Wherein, the oil pressure threshold value of opening of described balance cock is opened oil pressure threshold value higher than described drg;
In the process rising at elevator, described controller is controlled described electromagnetic valve and is opened the second oil inlet, makes the pressure oil of described pressure oil-source enter drg by the second oil inlet of described electromagnetic valve and the oil outlet of described electromagnetic valve, and opens described drg.
2. device as claimed in claim 1, is characterized in that:
Also comprise: shuttle valve;
Described shuttle valve is arranged in the oil circuit that the first oil inlet of described electromagnetic valve communicates with described the first working connection, and in described the first working connection, pressure oil enters the first oil inlet of described electromagnetic valve by described shuttle valve.
3. device as claimed in claim 2, is characterized in that:
Also comprise: reducing valve;
Described reducing valve is arranged in the oil circuit that the first oil inlet of described electromagnetic valve communicates with described the first working connection, and in described the first working connection, pressure oil enters the first oil inlet of described electromagnetic valve by described reducing valve.
4. device as claimed in claim 1, is characterized in that:
Described electromagnetic valve is direct-acting electromagnetic valve or guide electromagnetic valve.
5. device as claimed in claim 1, is characterized in that:
Described balance cock is static balancing valve or dynamic balance valve.
6. a crane hoisting hydraulic efficiency pressure system, is characterized in that:
Comprise the rolling control balancing valve apparatus as described in claim 1 to 5 any one.
7. a hoisting crane, is characterized in that:
Comprise crane hoisting hydraulic efficiency pressure system as claimed in claim 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320612892.1U CN203529851U (en) | 2013-09-30 | 2013-09-30 | Winch control balance valve device, crane winch hydraulic system and crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320612892.1U CN203529851U (en) | 2013-09-30 | 2013-09-30 | Winch control balance valve device, crane winch hydraulic system and crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203529851U true CN203529851U (en) | 2014-04-09 |
Family
ID=50416087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320612892.1U Withdrawn - After Issue CN203529851U (en) | 2013-09-30 | 2013-09-30 | Winch control balance valve device, crane winch hydraulic system and crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203529851U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103466494A (en) * | 2013-09-30 | 2013-12-25 | 徐州重型机械有限公司 | Winch- controlling balance valve device, crane winch hydraulic system and crane |
| CN105217508A (en) * | 2014-10-30 | 2016-01-06 | 徐州重型机械有限公司 | A kind of hoist brake control system, method and hoisting crane |
| CN110817719A (en) * | 2019-12-08 | 2020-02-21 | 怀化学院 | Main winch balance valve group |
-
2013
- 2013-09-30 CN CN201320612892.1U patent/CN203529851U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103466494A (en) * | 2013-09-30 | 2013-12-25 | 徐州重型机械有限公司 | Winch- controlling balance valve device, crane winch hydraulic system and crane |
| CN103466494B (en) * | 2013-09-30 | 2015-11-25 | 徐州重型机械有限公司 | A kind of rolling control balancing valve apparatus, crane hoisting hydraulic efficiency pressure system and hoisting crane |
| CN105217508A (en) * | 2014-10-30 | 2016-01-06 | 徐州重型机械有限公司 | A kind of hoist brake control system, method and hoisting crane |
| CN110817719A (en) * | 2019-12-08 | 2020-02-21 | 怀化学院 | Main winch balance valve group |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140409 Effective date of abandoning: 20151125 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20140409 Effective date of abandoning: 20151125 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |