CN205423361U - Emergent valves of transferring - Google Patents

Emergent valves of transferring Download PDF

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Publication number
CN205423361U
CN205423361U CN201620205568.1U CN201620205568U CN205423361U CN 205423361 U CN205423361 U CN 205423361U CN 201620205568 U CN201620205568 U CN 201620205568U CN 205423361 U CN205423361 U CN 205423361U
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CN
China
Prior art keywords
valve
motor
pressure
meeting
branch road
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201620205568.1U
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Chinese (zh)
Inventor
陈栋
叶建华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Zhenghua Heavy Industries Co Ltd
Original Assignee
Shanghai Zhenghua Heavy Industries Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Zhenghua Heavy Industries Co Ltd filed Critical Shanghai Zhenghua Heavy Industries Co Ltd
Priority to CN201620205568.1U priority Critical patent/CN205423361U/en
Application granted granted Critical
Publication of CN205423361U publication Critical patent/CN205423361U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses an emergent valves of transferring, need not to increase that the gib head counter weight just can realize emergent transferring, falling speed stepless adjustable at simple structure. Its technical scheme does: the external motor of valves, liquid braking device and oil sources, the valves is inside including the choke valve, the pilot operated directional control valve, the relief pressure valve, an unidirectional valve, and hand -operated direction valve, wherein choke valve and pilot operated directional control valve are connected on first the way that lies in motor high -pressure side port, a second way that is lieing in motor low tension side port is connected to relief pressure valve and check valve, liquid braking device connects the motor, the first end and the second end of hand -operated direction valve are connected respectively in first branch road and second branch road, liquid braking device is connected to the third end of hand -operated direction valve.

Description

A kind of meeting an urgent need transfers valve group
Technical field
This utility model relates to the technical field of Fluid Transmission and Control, particularly relates to the emergent device transferring valve group when breaking down crane main pump.
Background technology
When existing hoister in large tonnage main pump breaks down, after connecting and open brake by motor AB mouth, gib head can not be met an urgent need decline under gravity, and during or empty hook lighter mainly due to weight, on gib head, power is less than hindering the resistance declined to cause declining.
The way used on market is when design, gib head carrying out counterbalance design, i.e. considers that gib head to reach multiple, after the connection of motor AB mouth, gib head just can overcome resistance to decline under gravity, this way adds gib head weight, adds energy consumption during lift heavy.
Even if gib head can decline after the connection of motor AB mouth is opened brake, anti-generation high pressure is dragged because motor A mouth is supported, motor B mouth pressure oil can be gone to fuel tank from motor Leakage Energy, and the oil of motor B mouth has leaked rear motor and drawn internal generation to cavitate by load, and load can directly be dropped and be caused danger.
Utility model content
The brief overview of one or more aspect given below is to provide the basic comprehension in terms of these.This summarizes the extensive overview of the not all aspect contemplated, and the most non-scope attempting to define in terms of any or all of the key or decisive key element that is both not intended to identify all aspects.Its unique purpose is intended to provide in simplified form some concepts of one or more aspect and thinks the sequence of more detailed description given later.
The purpose of this utility model is to solve the problems referred to above, it is provided that a kind of emergent valve group of transferring, simple in construction, without increase gib head counterweight just can realize meeting an urgent need transfer, decrease speed is stepless adjustable.
The technical solution of the utility model is: this utility model discloses a kind of meeting an urgent need and transfers valve group, the external motor of valve group, liquid braking device and oil sources, choke valve is included inside valve group, pilot operated directional control valve, air relief valve, check valve, and hand-operated direction valve, wherein choke valve and pilot operated directional control valve are connected to be positioned on the first branch road of motor high-pressure side port, air relief valve and check valve are connected to be positioned on the second branch road of motor low-pressure side port, liquid braking device connects motor, first end of hand-operated direction valve and the second end are connected to the first branch road and the second branch road, the three-terminal link liquid braking device of hand-operated direction valve.
According to the emergent embodiment transferring valve group of the present utility model, the operation of hand-operated direction valve manipulation liquid braking device.
According to the emergent embodiment transferring valve group of the present utility model, air relief valve carries out decompression operation to entering the emergent oil sources transferring valve group, and oil sources is divided into first via oil sources and the second road binders source.
According to the emergent embodiment transferring valve group of the present utility model, first via oil sources is accessed motor low-pressure side by check valve, makes the suspension hook of outside actively decline.
According to the emergent embodiment transferring valve group of the present utility model, pilot operated directional control valve is opened under the effect in the second road binders source reduced pressure through air relief valve, make motor high-pressure side be connected with fuel tank by choke valve, adjusted, by adjusting the opening of choke valve, the speed that suspension hook is transferred.
According to the emergent embodiment transferring valve group of the present utility model, the speed that the suspension hook adjusted by adjusting the opening of choke valve is transferred is stepless adjustable.
According to the emergent embodiment transferring valve group of the present utility model, after the oil sources of motor low-pressure side loses, the oil circuit of motor on high-tension side decline oil return is blocked immediately, and the decentralization process of suspension hook stops.
According to the emergent embodiment transferring valve group of the present utility model, the pressure that arranges of air relief valve is more than the unlatching pressure of pilot operated directional control valve.
According to the emergent embodiment transferring valve group of the present utility model, the pressure that arranges of air relief valve is more than the resistance overcome required for suspension hook declines.
According to the emergent embodiment transferring valve group of the present utility model, oil sources includes pump, check valve and overflow valve, and wherein pump and check valve are connected on the second branch road, and one end of overflow valve is positioned on the first branch road, and the other end of overflow valve is positioned on the second branch road.
This utility model contrast prior art has following beneficial effect: this utility model safety of Arbitrary Loads be applicable to open and close type system is emergent transfers (containing empty hook).Its principle is: be used for opening liquid braking device by a road binders source, the oil sources reduced pressure through air relief valve in another road, it is linked into the low-pressure side of motor, it is made actively to decline, and the oil sources reduced pressure through air relief valve is received the control mouth of pilot operated directional control valve to control the unlatching of pilot operated directional control valve, on high-tension side for motor oil circuit is connected with fuel tank by pilot operated directional control valve by choke valve, and the speed of the stepless decline of weight is by throttle valve control.After disappearing through the oil sources of air relief valve, due to the control mouth pressure out of hand of pilot operated directional control valve, causing pilot operated directional control valve to be closed, thus cut off the connection of motor high-pressure side and fuel tank, gib head does not continues to decline.
The utility model has the advantage of:
1. improve safety when transferring, motor AB mouth is full of oil all the time, and the danger dropped suddenly will not occur;
2. with the connection of fuel tank whether motor high-pressure side hydraulic fluid port controls by pilot operated directional control valve, it is to avoid motor torque is supported the possibility firmly dragged down not, improves safety;
The most easy and simple to handle, emergent transfer after valve group accesses emergent oil sources, then the most emergent transfers, stop emergent oil sources and then stop transferring at once;
4. it is not only suitable for emergent the transferring of closed system driving, is also applied for emergent the transferring of open system driving;
5. it is applicable to external multiple actuator, except external motor, is equally applicable to external oil cylinder etc.;
6. it is increased without gib head counterweight, emergent the transferring of Arbitrary Loads (containing empty hook) can be realized, alleviate weight and decrease energy consumption.
Accompanying drawing explanation
Fig. 1 shows the structure chart of the emergent preferred embodiment transferring valve group of the present utility model.
Detailed description of the invention
After reading the detailed description that embodiment of the disclosure in conjunction with the following drawings, it is possible to be more fully understood that features described above of the present utility model and advantage.In the accompanying drawings, each assembly is not necessarily drawn to scale, and the assembly with similar correlation properties or feature is likely to be of same or like reference.
Fig. 1 shows the structure of the emergent preferred embodiment transferring valve group of the present utility model.Referring to Fig. 1, the present embodiment drives by motor and illustrates as a example by elevator winch, and whole emergent valve group of transferring comprises system and the emergent system transferred of realization opening brake.
The emergent of the present embodiment transfers the external motor of valve group 6, liquid braking device 7 and oil sources, and oil sources such as includes pump 8, check valve 9 and the structure of overflow valve 10.
Emergent transferring includes choke valve 1, pilot operated directional control valve 2, air relief valve 3, check valve 4 and hand-operated direction valve 5 inside valve group.Wherein choke valve 1 and pilot operated directional control valve 2 are connected to be positioned on first branch road of motor high-pressure side port A, and air relief valve 3 and check valve 4 are connected to be positioned on second branch road of motor low-pressure side port B.Liquid braking device 7 connects motor 6, and the first end P and the second end T of hand-operated direction valve 5 are connected to the first branch road and the second branch road, and the 3rd end B of hand-operated direction valve 5 connects liquid braking device 7.
Being connected on the second branch road for oil sources, pump 8 and check valve 9, one end of overflow valve 10 is positioned on the first branch road, and the other end of overflow valve 10 is positioned on the second branch road.
When the gib head of suspension hook needs emergent transferring, first liquid braking device 7 opened by operation hand-operated direction valve 5, access emergent oil sources the most only need to the emergent P mouth transferring valve group, after oil sources enters valve group, first passing through air relief valve 3 to reduce pressure, post-decompression oil sources is divided into two-way, and the first via accesses the low-pressure side of motor 6 by check valve 4, making suspension hook actively decline, pilot operated directional control valve 2 is opened on the second tunnel.Pilot operated directional control valve 2 is opened under the hydraulic control oil sources effect reduced pressure through air relief valve 3, makes the high-pressure side of motor 6 be connected with fuel tank by choke valve 1.By adjusting the opening of choke valve 1, can adjust the speed that gib head is transferred, the regulation of this speed belongs to stepless adjustable.
After the oil sources of motor low-pressure side loses, the oil circuit of motor on high-tension side decline oil return is blocked immediately, and the decentralization process of suspension hook stops.
In the present embodiment, the pressure that arranges of air relief valve 3 is more than the unlatching pressure of pilot operated directional control valve 2.The pressure that arranges of air relief valve 3 is more than the resistance (weight, gib head, steel wire rope weight on the power gib head overcoming resistance to need) overcome required for suspension hook declines.
Thering is provided of this disclosure being previously described is for making any person skilled in the art all can make or use the disclosure.Various amendment of this disclosure the most all will be apparent from, and the generic principles defined herein can be applied to other variants spirit or scope without departing from the disclosure.Thus, the disclosure is not intended to be limited to example described herein and design, but with disclosed herein principle and novel features consistent the widest scope should be awarded.

Claims (10)

1. emergent transfer valve group for one kind, it is characterized in that, the external motor of valve group, liquid braking device and oil sources, choke valve, pilot operated directional control valve, air relief valve, check valve and hand-operated direction valve is included inside valve group, wherein choke valve and pilot operated directional control valve are connected to be positioned on the first branch road of motor high-pressure side port, air relief valve and check valve are connected to be positioned on the second branch road of motor low-pressure side port, liquid braking device connects motor, first end of hand-operated direction valve and the second end are connected to the first branch road and the second branch road, the three-terminal link liquid braking device of hand-operated direction valve.
The most according to claim 1 meeting an urgent need transfers valve group, it is characterised in that the operation of hand-operated direction valve manipulation liquid braking device.
The most according to claim 2 meeting an urgent need transfers valve group, it is characterised in that air relief valve carries out decompression operation to entering the emergent oil sources transferring valve group, and oil sources is divided into first via oil sources and the second road binders source.
The most according to claim 3 meeting an urgent need transfers valve group, it is characterised in that first via oil sources is accessed motor low-pressure side by check valve, makes the suspension hook of outside actively decline.
The most according to claim 4 meeting an urgent need transfers valve group, it is characterized in that, pilot operated directional control valve is opened under the effect in the second road binders source reduced pressure through air relief valve, makes motor high-pressure side be connected with fuel tank by choke valve, is adjusted, by adjusting the opening of choke valve, the speed that suspension hook is transferred.
The most according to claim 5 meeting an urgent need transfers valve group, it is characterised in that the speed that the suspension hook adjusted by adjusting the opening of choke valve is transferred is stepless adjustable.
The most according to claim 6 meeting an urgent need transfers valve group, it is characterised in that after the oil sources of motor low-pressure side loses, the oil circuit of motor on high-tension side decline oil return is blocked immediately, and the decentralization process of suspension hook stops.
The most according to claim 7 meeting an urgent need transfers valve group, it is characterised in that the pressure that arranges of air relief valve is more than the unlatching pressure of pilot operated directional control valve.
The most according to claim 8 meeting an urgent need transfers valve group, it is characterised in that the pressure that arranges of air relief valve is more than the resistance overcome required for suspension hook declines.
The most according to any one of claim 1 to 9 meeting an urgent need transfers valve group, it is characterized in that, oil sources includes pump, check valve and overflow valve, and wherein pump and check valve are connected on the second branch road, one end of overflow valve is positioned on the first branch road, and the other end of overflow valve is positioned on the second branch road.
CN201620205568.1U 2016-03-17 2016-03-17 Emergent valves of transferring Expired - Fee Related CN205423361U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620205568.1U CN205423361U (en) 2016-03-17 2016-03-17 Emergent valves of transferring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620205568.1U CN205423361U (en) 2016-03-17 2016-03-17 Emergent valves of transferring

Publications (1)

Publication Number Publication Date
CN205423361U true CN205423361U (en) 2016-08-03

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Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105570214A (en) * 2016-03-17 2016-05-11 上海振华重工(集团)股份有限公司 Emergency descent valve bank

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105570214A (en) * 2016-03-17 2016-05-11 上海振华重工(集团)股份有限公司 Emergency descent valve bank

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160803

Termination date: 20180317