CN207420993U - A kind of hydraulic press backhaul without pump accumulator closed oil circuit - Google Patents
A kind of hydraulic press backhaul without pump accumulator closed oil circuit Download PDFInfo
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- CN207420993U CN207420993U CN201721447361.6U CN201721447361U CN207420993U CN 207420993 U CN207420993 U CN 207420993U CN 201721447361 U CN201721447361 U CN 201721447361U CN 207420993 U CN207420993 U CN 207420993U
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- backhaul
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- accumulator
- pump
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Abstract
The utility model is related to a kind of hydraulic press backhaul without pump accumulator closed oil circuit, it is to connect accumulator with backhaul hydraulic cylinder, and the space that the two is connected is configured with the enclosed space of certain pressure.Pressure oil in backhaul hydraulic cylinder is communicated by oil-piping with without pump accumulator, and the pressure of the pressure oil in backhaul hydraulic cylinder is identical with the pressure without pressure oil in pump accumulator, has certain pressure oil in backhaul hydraulic cylinder always and with certain pressure.It works when the sum of action component weight that the active force of main hydraulic cylinder works with hydraulic press is more than backhaul cylinder pressure walking beam, when the sum of action component weight of active force and hydraulic press work of main hydraulic cylinder is less than backhaul cylinder pressure walking beam backhaul.So as to reduce the configuration of the quantity and hydraulic component of hydraulic pressure pump to greatest extent, stablize return pressure, improve pressure response speed, reduce device configuration and energy loss to greatest extent.
Description
Technical field
The utility model is related to a kind of closed oil circuit without pump accumulator, more particularly to a kind of hydraulic press kicker cylinder and no pump
The closed oil circuit that accumulator is connected, belongs to hydraulic transmission technology field.
Background technology
The backhaul of conventional hydraulic machine is to provide pressure oil driving backhaul hydraulic cylinder by hydraulic pump walking beam backhaul is driven to realize
, since backhaul hydraulic cylinder not only needs higher pressure to also need to very big flow during backhaul, it is therefore desirable to match somebody with somebody
Standby sufficient amount of hydraulic pump.When hydraulic press works, main hydraulic cylinder cut-in pressure oil, walking beam first drive working portion idle running
Work is fast-forward into the oil return in backhaul hydraulic cylinder flows into fuel tank；During backhaul, backhaul hydraulic cylinder cut-in pressure is oily, in main hydraulic cylinder
Pressure oil pressure release flow into fuel tank, backhaul hydraulic cylinder drives walking beam to realize backhaul.It is above-mentioned it is reciprocal during, backhaul hydraulic cylinder is not
The oil inlet of disconnected ground, draining, not only waste substantial amounts of energy, also result in the pressure transient in backhaul hydraulic cylinder, and respond speed
Degree is slower.Moreover, also need to set complicated control loop in the configuration of backhaul hydraulic cylinder and hydraulic pump, in control loop
Element causes significant wastage because many factors such as abrasion often damage.Therefore, the setting of conventional hydraulic machine backhaul oil supply loop and
There are resource distribution is unreasonable, the complicated component of control loop is more, hydraulic cylinder operating pressure is unstable, response speed for mode
The drawbacks such as slowly, maintaining amount is big.
The content of the invention
The drawbacks of for conventional hydraulic machine backhaul hydraulic circuit and control mode as stated in the Background Art, the utility model carries
Gone out a kind of hydraulic press backhaul without pump accumulator closed oil circuit, it is to connect accumulator with backhaul hydraulic cylinder, and by the two
The space of connection is configured with the closed oil circuit of certain pressure.It is intended to reduce the quantity of hydraulic pressure pump and hydraulic pressure member to greatest extent
Device configures, and stablizes return pressure, improves response speed, reduces device configuration and energy loss to greatest extent.
To achieve these goals, the utility model is implemented by the following technical programs：A kind of hydraulic press backhaul without pump
Accumulator closed oil circuit, including hydraulic press, accumulator, hydraulic pump, the hydraulic press includes：Main hydraulic cylinder, walking beam, backhaul
Hydraulic cylinder；The accumulator includes main accumulator and without pump accumulator, and the hydraulic pump is one or more；The main hydraulic cylinder
Single rod of piston and backhaul hydraulic cylinder is fixedly connected with walking beam, and the pressure oil of the main hydraulic cylinder is by hydraulic pump and main accumulation of energy
Device provides, when depressing work, hydraulic power drive walking beam and its workpiece idle running soon lower and work into, it is characterised in that：
The backhaul hydraulic cylinder without pump accumulator with being connected and forming a closed oil circuit；
It is described to set pressure as 10~40Mpa without pump accumulator；
Backhaul hydraulic cylinder acts on hydraulic press walking beam and its reverberation matrix method of workpiece and hydraulic press walking beam and its work
The weight ratio value for making component is 1.2~4；
It is described without pump accumulator gas chamber on be provided with inflation mechanism, for adjust or supplement without pump accumulator in pressure；
Valve is provided on the oil-piping that the backhaul hydraulic cylinder is connected with without pump accumulator oil inlet and outlet, for connecting
Or disconnect backhaul hydraulic cylinder and without pump accumulator between connection.
The utility model has following favorable attributes compared with conventional hydraulic machine backhaul hydraulic circuit and control form：
1st, the backhaul hydraulic cylinder of hydraulic press and accumulator form a closed hydraulic circuit, and the pressure oil of backhaul hydraulic cylinder is by storing
Energy device is independently supplied, and supply energy had not only been not required in backhaul but also has eliminated substantial amounts of oil circuit control device, so as to drop to greatest extent
The low configuration of hydraulic pressure pump, has saved equipment investment, reduces electric power resource consumption；
2nd, the oil pocket of backhaul hydraulic cylinder with forming closed connecting chamber between the two without pump accumulator, when hydraulic press backhaul
When, backhaul hydraulic cylinder realizes zero loss of storage and release without pump accumulator, reaches energy saving mesh substantially without draining
's；
3rd, backhaul hydraulic cylinder has the advantages that pressure stability, fast response time, and backhaul operating mode significantly improves.
Description of the drawings
Attached drawing 1 is the utility model main hydraulic cylinder by the hydraulic schematic diagram of main accumulator supply pressure oil.
In fig. 1：1 be main hydraulic cylinder, 2 be backhaul hydraulic cylinder, 3 be walking beam, 4 be main accumulator, 5 be without pump accumulation of energy
Device.
Specific embodiment
Explanation is further explained to the utility model below in conjunction with attached drawing：
Closed oil circuit such as attached drawing 1 of the utility model from providing pressure oil to the backhaul hydraulic cylinder of hydraulic press without pump accumulator
Shown, the hydraulic oil in the main hydraulic cylinder 1 of hydraulic press is supplied by main accumulator 4, realizes that walking beam 3 drives working portion idle running fast
Lower and work is into pressure；Backhaul hydraulic cylinder 2 is connected by oil-piping with the oil inlet and outlet without pump accumulator 5, forms backhaul hydraulic pressure
The airtight chamber that the oil pocket of cylinder 2 is communicated with without both pump accumulators 5；Pressure is set as 25Mpa without pump accumulator 5, when main hydraulic pressure
When hydraulic oil in cylinder 1 is communicated with fuel tank, possessed oil pressure charged pressure oil into backhaul hydraulic cylinder 2 in no pump accumulator 5,
Make walking beam 3 that working portion be driven to realize backhaul, backhaul hydraulic cylinder 2 acts on time of hydraulic press walking beam 3 and its workpiece
Cheng Li is 2.5 with the weight ratio value of hydraulic press walking beam 3 and its workpiece.
Backhaul hydraulic cylinder 2 in the utility model without pump accumulator 5 by being independently supplied pressure oil, so as to drop to greatest extent
Low hydraulic press with pump quantity, saved equipment investment, reduced electric power resource configuration；The oil pocket and nothing of backhaul hydraulic cylinder 2
Pump accumulator 5 forms closed connecting chamber between the two, when under hydraulic press idle running is fast, work into during pressure, in backhaul hydraulic cylinder 2
Pressure oil be pressed into without pump accumulator 5, it is enabled to measure storage；During backhaul, no pump accumulator 5 discharges the energy of storage,
So as to fulfill the fuel system by being independently supplied pressure oil for the backhaul of hydraulic press walking beam 3 without pump accumulator 5, reach saving energy
The purpose in source.
Claims (5)
1. a kind of hydraulic press backhaul without pump accumulator closed oil circuit, including hydraulic press, accumulator, hydraulic pump, the hydraulic press
Include：Main hydraulic cylinder, walking beam, backhaul hydraulic cylinder；The accumulator includes main accumulator and without pump accumulator, the hydraulic pressure
It pumps as one or more；Single rod of the main hydraulic cylinder piston and backhaul hydraulic cylinder is fixedly connected with walking beam, the main liquid
The pressure oil of cylinder pressure is provided by hydraulic pump and main accumulator, and when depressing work, hydraulic power drives walking beam and its workpiece
Idle running is lower soon and work into, it is characterised in that：
The backhaul hydraulic cylinder without pump accumulator with being connected and forming a closed oil circuit.
2. a kind of hydraulic press backhaul according to claim 1 without pump accumulator closed oil circuit, it is characterised in that：The nothing
Pump accumulator sets pressure as 10-40Mpa.
3. a kind of hydraulic press backhaul according to claim 1 or 2 without pump accumulator closed oil circuit, it is characterised in that：Institute
It states backhaul hydraulic cylinder and acts on hydraulic press walking beam and its reverberation matrix method of workpiece and hydraulic press walking beam and its workpiece
Weight ratio value be 1.2~4.
4. a kind of hydraulic press backhaul according to claim 1 without pump accumulator closed oil circuit, it is characterised in that：The nothing
Inflation mechanism is provided on pump accumulator gas chamber, for adjusting or supplementing without the pressure in pump accumulator.
5. a kind of hydraulic press backhaul according to claim 1 without pump accumulator closed oil circuit, it is characterised in that：Described time
Valve is provided on the oil-piping that journey hydraulic cylinder is connected with without pump accumulator oil inlet and outlet, for being switched on or switched off backhaul hydraulic pressure
Cylinder and without pump accumulator between connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721447361.6U CN207420993U (en) | 2017-11-02 | 2017-11-02 | A kind of hydraulic press backhaul without pump accumulator closed oil circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721447361.6U CN207420993U (en) | 2017-11-02 | 2017-11-02 | A kind of hydraulic press backhaul without pump accumulator closed oil circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207420993U true CN207420993U (en) | 2018-05-29 |
Family
ID=62306847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721447361.6U Active CN207420993U (en) | 2017-11-02 | 2017-11-02 | A kind of hydraulic press backhaul without pump accumulator closed oil circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN207420993U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107829988A (en) * | 2017-11-02 | 2018-03-23 | 中科聚信洁能热锻装备研发股份有限公司 | A kind of hydraulic press backhaul without pump accumulator closed oil circuit and its control method |
-
2017
- 2017-11-02 CN CN201721447361.6U patent/CN207420993U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107829988A (en) * | 2017-11-02 | 2018-03-23 | 中科聚信洁能热锻装备研发股份有限公司 | A kind of hydraulic press backhaul without pump accumulator closed oil circuit and its control method |
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