CN109253120A - Combination cylinder energy conservation hoisting system - Google Patents
Combination cylinder energy conservation hoisting system Download PDFInfo
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- CN109253120A CN109253120A CN201811208139.XA CN201811208139A CN109253120A CN 109253120 A CN109253120 A CN 109253120A CN 201811208139 A CN201811208139 A CN 201811208139A CN 109253120 A CN109253120 A CN 109253120A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/22—Synchronisation of the movement of two or more servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/14—Energy-recuperation means
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- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention lifts existing unbalance loading, asynchronous problem for engineering machinery twin-tub, provides a kind of combination cylinder energy conservation hoisting system.Combination cylinder used in the system is welded by least two hydraulic cylinders, hydraulic cylinder welding, welding at the top of hydraulic cylinder piston rod, and possesses common earrings, the rod chamber connection of hydraulic cylinder, may be implemented combination cylinder without unbalance loading, synchronous lifting.Combination cylinder energy conservation hoisting system disclosed by the invention is with no unbalance loading, synchronous lifting, energy utilization efficiency are high, it is at low cost, without many-sided advantage such as pilot oil source, simple and reliable.
Description
Technical field
The invention belongs to hydraulic system technical fields, and in particular to a kind of combination cylinder energy conservation hoisting system.
Background technique
Currently, the engineering machinery such as excavator, loading machine mostly use hydraulic system to drive swing arm, using swing arm rising and
Decline is to execute operation.Wherein, actuator is hydraulic cylinder.During the work time, i.e., when engineering machinery twin-tub lifts, due to two sides
Cylinder is asynchronous and the inclined side that causes swing arm or so, so that swing arm and upper frame hinged place, hydraulic cylinder piston rod and swing arm hinged place, liquid
Cylinder pressure body is unevenly distributed with vehicle frame hinged place pressure at both sides, and hinged place is caused to wear, or even can be deformed, and engineering machine has been seriously affected
The normal operation of tool.So the synchronization of hydraulic cylinder, without unbalance loading lifting becoming the research hotspot of domestic and international practitioner.
Currently, multiple hydraulic cylinders synchronous lifting mostly uses the technical solution of hydraulic servo oil cylinder.For example, Beijing richness power is sensible
Device and the control of a kind of synchronous load of hydraulic servo oil cylinder are given in patent CN 107524649A disclosed in Science and Technology Ltd.
Method processed.It is connected using displacement sensor, load cell and servo-control system, to solve the unbalance loading in cylinder action
Problem realizes hydraulic cylinder synchronous movement.By using servo techniques, the accurate position that controls synchronizes the program.But due to engineering machine
Tool often works in that dust is big, adverse circumstances of high temperature, miriness.Program too complex, will increase dramatically for engineering machinery
Cost, and the service life is not grown in the presence of a harsh environment.It is therefore desirable to consider the new simple thinking of one kind to realize that hydraulic cylinder is same
Step, unbiased carrying are dynamic.
Summary of the invention
The present invention lifts existing unbalance loading, asynchronous problem for engineering machinery twin-tub, provides a kind of combination cylinder energy conservation act
The system of liter.Combination cylinder used in the system is welded by least two hydraulic cylinders, hydraulic cylinder welding, hydraulic cylinder piston rod
Top welding, and possess common earrings.The system may be implemented combination cylinder without unbalance loading, synchronous lifting, with no unbalance loading, synchronization
Lifting, energy utilization efficiency it is high, it is at low cost, without pilot oil source, simple and reliable etc. various aspects advantage.
To achieve the goals above, the scheme that the present invention uses is:
Combination cylinder energy conservation hoisting system includes mechanical device and hydraulic system, wherein mechanical device include: swing arm (13),
Vehicle frame (14), the tail portion of swing arm are hinged on vehicle frame；Hydraulic system includes: that pump motor (1), motor (2), the Ith 2/2-way change
To valve (3), the IIth 2/2-way reversal valve (4), the IIIth 2/2-way reversal valve (5), the IVth 2/2-way reversal valve (6),
V 2/2-way reversal valve (7), the VIth 2/2-way reversal valve (8), combination cylinder (9), accumulator (10), fuel tank (11)；Combination
Cylinder piston rod earrings is hinged on the middle part of swing arm, and combination cylinder cylinder body earrings is hinged on vehicle frame；In the hydraulic system, motor with
Ith oil of pump motor mechanical connection, the Ith hydraulic fluid port connected tank of pump motor, the IIth hydraulic fluid port of pump motor and the IIIth 2/2-way reversal valve
Mouth is connected to the Ith hydraulic fluid port of the IIth 2/2-way reversal valve, on the right side of the IIth hydraulic fluid port and combination cylinder of the IIIth 2/2-way reversal valve
The connection of Ith hydraulic fluid port of rodless cavity and the IVth 2/2-way reversal valve, the IIth hydraulic fluid port and combination cylinder of the IVth 2/2-way reversal valve
The connection of Ith hydraulic fluid port of left side rodless cavity and the Vth 2/2-way reversal valve, the IIth hydraulic fluid port and storage of the Vth 2/2-way reversal valve
The connection of Ith hydraulic fluid port of energy device and the VIth 2/2-way reversal valve, the IIth hydraulic fluid port of the VIth 2/2-way reversal valve are connected to fuel tank,
Combination cylinder rod chamber is connected to the Ith hydraulic fluid port of the IIth hydraulic fluid port of the IIth 2/2-way reversal valve and the Ith 2/2-way reversal valve, the
IIth hydraulic fluid port of I 2/2-way reversal valve is connected to fuel tank；
The combination cylinder is welded by more than two hydraulic cylinders, and the cylinder body of all hydraulic cylinder is welded to each other, and is owned
The piston rod part of hydraulic cylinder is welded to each other, and uses common earrings, the constituted mode of the combination cylinder are as follows:
Two hydraulic cylinders weld together side by side, and the Ith hydraulic cylinder body (9-1) and the IIth hydraulic cylinder body (9-2) weld
It is integrated, the Ith hydraulic cylinder piston rod (9-5) and the IIth hydraulic cylinder piston rod (9-6) are welded on the common earrings (9- of piston rod jointly
10) on, the common earrings of cylinder body (9-9) is welded on combination cylinder bottom；
Alternatively, three hydraulic cylinders, three vertex in equilateral triangle are distributed and weld, the Ith hydraulic cylinder body (9-1)
It is welded as a whole with the IIth hydraulic cylinder body (9-2), the IIIth hydraulic cylinder body (9-3), the Ith hydraulic cylinder piston rod (9-5) and the
II hydraulic cylinder piston rod (9-6), the IIIth hydraulic cylinder piston rod (9-7) are welded on jointly on the common earrings of piston rod (9-10), cylinder
The common earrings of body (9-9) is welded on combination cylinder bottom；
Alternatively, square four vertex of four hydraulic cylinders are distributed and weld, the Ith hydraulic cylinder body (9-1), the IIth
Hydraulic cylinder body (9-2), the IIIth hydraulic cylinder body (9-3), the IVth hydraulic cylinder body (9-4) are welded as a whole, and the Ith hydraulic cylinder is living
Stopper rod (9-5), the IIth hydraulic cylinder piston rod (9-6), the IIIth hydraulic cylinder piston rod (9-7), the IVth hydraulic cylinder piston rod (9-8) are altogether
With being welded on the common earrings of piston rod (9-10), the common earrings of cylinder body (9-9) is welded on combination cylinder bottom；
Rodless cavity and rod chamber can connects with dynamical element on the left of the combination cylinder, the Ith hydraulic fluid port of dynamical element and
Rodless cavity connection, the IIth hydraulic fluid port of dynamical element are connected to combination cylinder rod chamber on the left of combination cylinder, and dynamical element and pump motor, electricity
Machine is coaxially connected.
The dynamical element is volume adjustable hydraulic pump or variable hydraulic motor；The pump motor is variable pump motor；Institute
The motor stated is generator or motor.
The 2/2-way reversal valve of described the Ith the-the VI 6 be switching regulator reversal valve or hydraulic control/electric proportional multi-way valve or
The valve group of inserted valve composition.
Compared with prior art, the present invention has the advantage that
1) unbalance loading, the asynchronous when lifting of engineering machinery twin-tub is solved the problems, such as, so that hydraulic cylinder, swing arm, vehicle frame etc. are more
Add and safely and reliably work, hydraulic system and mechanical device have the longer service life.
2) energy utilization efficiency is high, restriction loss is small.Energy regenerating can be carried out while driving, effectively by swing arm gravity
Potential energy is converted to utilizable energy, so that motor, pump motor is worked in high efficient district, improves overall efficiency.
3) installed power is small, and using auxiliary power source auxiliary pump motor output, accumulator or dynamical element can assist driving
Dynamic load reduces system installed power.
4) without the technical advantages such as pilot oil source, at low cost, simple and reliable, noise is low, action potential recycling.
Detailed description of the invention
Fig. 1 is the first implementation of combination cylinder element of the present invention；
Fig. 2 is second of implementation of combination cylinder element of the present invention；
Fig. 3 is the third implementation of combination cylinder element of the present invention；
Fig. 4 is the systematic schematic diagram of the embodiment of the present invention 1；
Fig. 5 is the equipment figure of the embodiment of the present invention 1；
Fig. 6 is the systematic schematic diagram of the embodiment of the present invention 2；
Fig. 7 is the equipment figure of the embodiment of the present invention 2；
In figure: 1- pump motor, 2- motor, the Ith 2/2-way reversal valve of 3-, the IIth 2/2-way reversal valve of 4-, 5- the IIIth
2/2-way reversal valve, the IVth 2/2-way reversal valve of 6-, the Vth 2/2-way reversal valve of 7-, the commutation of the VIth 2/2-way of 8-
Valve, 9- combination cylinder (the Ith hydraulic cylinder body of 9-1-, the IIth hydraulic cylinder body of 9-2-, the IIIth hydraulic cylinder body of 9-3-, 9-4- the IVth
Hydraulic cylinder body, the Ith hydraulic cylinder piston rod of 9-5-, the IIth hydraulic cylinder piston rod of 9-6-, the IIIth hydraulic cylinder piston rod of 9-7-, 9-8-
IVth hydraulic cylinder piston rod, the common earrings of 9-9- cylinder body, the common earrings of 9-10- piston rod), 10- accumulator, 11- fuel tank, 12-
Dynamical element, 13- swing arm, 14- vehicle frame, 15- dipper, 16- scraper bowl.
Specific embodiment
The present invention is described in further details with reference to the accompanying drawing:
As shown in Figure 1-3, combination cylinder element implementation are as follows:
Two hydraulic cylinders weld together side by side, and the Ith hydraulic cylinder body 9-1 and the IIth hydraulic cylinder body 9-2 are welded as one
Body, the Ith hydraulic cylinder piston rod 9-5 and the IIth hydraulic cylinder piston rod 9-6 are welded on jointly on the common earrings 9-10 of piston rod, cylinder body
Common earrings 9-9 is welded on combination cylinder bottom；
Alternatively, three hydraulic cylinders, three vertex in equilateral triangle are distributed and weld, the Ith hydraulic cylinder body 9-1 with
IIth hydraulic cylinder body 9-2, the IIIth hydraulic cylinder body 9-3 are welded as a whole, the Ith hydraulic cylinder piston rod 9-5 and the IIth hydraulic cylinder
Piston rod 9-6, the IIIth hydraulic cylinder piston rod 9-7 are welded on jointly on the common earrings 9-10 of piston rod, the common earrings 9-9 weldering of cylinder body
It connects in combination cylinder bottom；
Alternatively, square four vertex of four hydraulic cylinders are distributed and weld, the Ith hydraulic cylinder body 9-1, the IIth liquid
Cylinder pressure cylinder body 9-2, the IIIth hydraulic cylinder body 9-3, the IVth hydraulic cylinder body 9-4 are welded as a whole, the Ith hydraulic cylinder piston rod 9-5,
It is total that IIth hydraulic cylinder piston rod 9-6, the IIIth hydraulic cylinder piston rod 9-7, the IVth hydraulic cylinder piston rod 9-8 are welded on piston rod jointly
With on earrings 9-10, the common earrings 9-9 of cylinder body is welded on combination cylinder bottom.
Embodiment 1
As illustrated in figures 4-5, combination cylinder energy conservation hoisting system includes mechanical device and hydraulic system, wherein mechanical device packet
Include: swing arm (13), vehicle frame (14), the tail portion of swing arm is hinged on vehicle frame；Hydraulic system includes: pump motor (1), motor (2),
I 2/2-way reversal valve (3), the IIth 2/2-way reversal valve (4), the IIIth 2/2-way reversal valve (5), the IVth 2/2-way change
To valve (6), the Vth 2/2-way reversal valve (7), the VIth 2/2-way reversal valve (8), combination cylinder (9), accumulator (10), fuel tank
(11)；Combination cylinder piston rod earrings is hinged on the middle part of swing arm, and combination cylinder cylinder body earrings is hinged on vehicle frame；The hydraulic system
In, motor and pump motor are mechanically connected, the Ith hydraulic fluid port connected tank of pump motor, and the IIth hydraulic fluid port of pump motor and the IIIth 2/2-way commutate
The Ith hydraulic fluid port connection of the Ith hydraulic fluid port and the IIth 2/2-way reversal valve of valve, the IIth hydraulic fluid port and group of the IIIth 2/2-way reversal valve
Close the connection of the Ith hydraulic fluid port of rodless cavity and the IVth 2/2-way reversal valve, the IIth hydraulic fluid port of the IVth 2/2-way reversal valve on the right side of cylinder
It is connected to the Ith hydraulic fluid port of rodless cavity on the left of combination cylinder and the Vth 2/2-way reversal valve, the IIth of the Vth 2/2-way reversal valve the
Hydraulic fluid port is connected to the Ith hydraulic fluid port of accumulator and the VIth 2/2-way reversal valve, the IIth hydraulic fluid port of the VIth 2/2-way reversal valve with
Fuel tank connection, the Ith oil of the IIth hydraulic fluid port and the Ith 2/2-way reversal valve of combination cylinder rod chamber and the IIth 2/2-way reversal valve
Mouth connection, the IIth hydraulic fluid port of the Ith 2/2-way reversal valve are connected to fuel tank；
The combination cylinder is welded by more than two hydraulic cylinders, and the cylinder body of all hydraulic cylinder is welded to each other, and is owned
The piston rod part of hydraulic cylinder is welded to each other, and uses common earrings.
Rodless cavity and rod chamber can connects with dynamical element on the left of the combination cylinder, the Ith hydraulic fluid port of dynamical element and
Rodless cavity connection, the IIth hydraulic fluid port of dynamical element are connected to combination cylinder rod chamber on the left of combination cylinder, and dynamical element and pump motor, electricity
Machine is coaxially connected.
The dynamical element is volume adjustable hydraulic pump or variable hydraulic motor；The pump motor is variable pump motor；Institute
The motor stated is generator or motor.
The 2/2-way reversal valve of described the Ith the-the VI 6 be switching regulator reversal valve or hydraulic control/electric proportional multi-way valve or
The valve group of inserted valve composition.
The course of work: pump motor provides the pressure value of setting under the drive of the motor, and system is constituted together with accumulator
Constant pressure oil source, for swing arm lifting pressure oil is provided.If load smaller, accumulator is main energy source device, supplemented by pump motor
Help energy source device；If load larger, pump motor is main energy source device, and accumulator assists pump motor output.Concrete operations side
Formula are as follows: when combination cylinder raising, the I, the III, IV, V 2/2-way reversal valve is connected, the cutting of the II, the VI 2/2-way reversal valve,
The hydraulic energy of the swing arm gravitional force conversion stored in middle accumulator can lift to combination cylinder with pump motor output hydraulic pressure and provide energy
Amount；When combination cylinder is fallen after rise, since swing arm load acts on, combination cylinder rodless cavity pressure rise is connected the I, the III, V 2/2-way and is changed
To valve, remaining is cut off.Rodless cavity pressure oil squeezes into accumulator on the left of combination cylinder, so that gravitional force when swing arm is fallen turns
Hydraulic energy is changed to store.Rodless cavity pressure oil squeezes into the IIth hydraulic fluid port of pump motor, transfer tube motor action, band on the right side of combination cylinder
Dynamic electric power generation, carries out energy regenerating.Combination cylinder decline is initial, and energy storage pressure is smaller, is not enough to balance swing arm gravity, at this time
The IIIth 2/2-way reversal valve is connected, pressure oil is squeezed into rodless cavity on the right side of combination cylinder by pump motor, to balance swing arm gravity.When
Energy storage pressure is excessive, when combination cylinder being caused to can not be successfully falling, the II, the IV, V 2/2-way reversal valve is connected, to pump horse
Combination cylinder rod chamber is squeezed into up to by pressure oil, so that combination cylinder is smoothly fallen after rise, while rodless cavity pressure oil squeezes into accumulator, carries out
Energy regenerating.Most importantly by the combination of hydraulic cylinder, welding, combination cylinder, which realizes, to be synchronized, lifts without unbalance loading.
Embodiment 2
As shown in fig. 6-7, combination cylinder energy conservation hoisting system includes mechanical device and hydraulic system, wherein mechanical device packet
Include: dipper 15, scraper bowl 16, scraper bowl are hinged on dipper end；Hydraulic system includes: that pump motor 1, motor 2, the Ith 2/2-way change
To valve 3, the IIth 2/2-way reversal valve 4, the IIIth 2/2-way reversal valve 5, the IVth 2/2-way reversal valve 6, the Vth two two
Logical reversal valve 7, combination cylinder 9, accumulator 10, fuel tank 11, dynamical element 12；Combination cylinder cylinder body earrings is hinged on dipper top, group
Cylinder piston rod earrings is closed to be hinged on scraper bowl.In hydraulic system: motor is coaxially mechanically connected with pump motor, dynamical element, pumps horse
The Ith hydraulic fluid port and the IIth 2/2-way up to the Ith hydraulic fluid port connected tank, the IIth hydraulic fluid port of pump motor while with the IIIth 2/2-way reversal valve
Ith hydraulic fluid port of reversal valve is connected to, the IIth hydraulic fluid port of the IIIth 2/2-way reversal valve simultaneously with rodless cavity and the IVth on the right side of combination cylinder
Ith hydraulic fluid port of 2/2-way reversal valve is connected to, the IIth hydraulic fluid port of the IVth 2/2-way reversal valve simultaneously with accumulator and the Vth liang
The Ith hydraulic fluid port connection of two logical reversal valves of position, the IIth hydraulic fluid port of the Vth 2/2-way reversal valve are connected to fuel tank, dynamical element the Ith
Hydraulic fluid port is connected to rodless cavity on the left of combination cylinder, and the IIth hydraulic fluid port of dynamical element is connected to combination cylinder rod chamber, and combination cylinder rod chamber is same
The Ith hydraulic fluid port connection of the IIth hydraulic fluid port and the Ith 2/2-way reversal valve of II 2/2-way reversal valve of Shi Yu, the Ith 2/2-way
IIth hydraulic fluid port of reversal valve is connected to fuel tank.
The course of work: the system is pump control, valve control hybrid control system.During combination cylinder stretches out, it is specially herein
Scraper bowl shovels digging movement, and can enable pump motor swashplate angle is zero, and motor drives dynamical element to supply to rodless cavity on the left of combination cylinder at this time
The oil liquid of oil, rod chamber flows into the IIth hydraulic fluid port of dynamical element, forms closed circuit, this process is closed model pump control, therefore is damaged without throttling
It loses, capacity usage ratio is high.At the same time, the IVth 2/2-way reversal valve is connected, and the pressure oil stored is squeezed into group by accumulator
Close rodless cavity auxiliary power element movement on the right side of cylinder；Valve control can also be used, the III, the IV 2/2-way reversal valve is connected, remaining two
Pressure oil is squeezed into rodless cavity on the right side of combination cylinder by the logical reversal valve cutting in position two, pump motor, and combination cylinder rises, combination cylinder rod chamber pressure
Power oil drives dynamical element movement, and dynamical element is in motor operating conditions, auxiliary pump output, this process is valve control, there is throttling damage
It loses, capacity usage ratio is low；During combination cylinder decline, because load gravity rises combination cylinder rodless cavity pressure,
Rodless cavity pressure oil squeezes into dynamical element on the left of combination cylinder, so that it is in motor operating conditions, drives electric power generation, carries out the energy and returns
It receives.The IVth 2/2-way reversal valve is connected at this time, and rodless cavity pressure oil squeezes into accumulator on the right side of combination cylinder, thus by load gravity
Potential energy is converted to hydraulic energy and stores.Decline is initial, and energy storage pressure is lower to be not enough to bear load gravity, and the IIIth two two
Logical reversal valve is connected, and pressure oil is squeezed into rodless cavity on the right side of combination cylinder by pump, to balancing load gravity.When energy storage pressure is big,
When causing combination cylinder that can not fall after rise, the IIth 2/2-way reversal valve is connected, and pressure oil is squeezed into combination cylinder rod chamber by pump, so that group
Cylinder is closed smoothly to decline.Most importantly by the combination of hydraulic cylinder, welding, combination cylinder, which realizes, to be synchronized, lifts without unbalance loading.
Above-described embodiment is only two specific implementation examples of the application, based on the embodiment in the application, this field
Those of ordinary skill's every other embodiment obtained without making creative work, all should belong to the application
The range of protection.
Claims (4)
1. combination cylinder energy conservation hoisting system, comprising: mechanical device and hydraulic system, wherein mechanical device include: swing arm (14),
Vehicle frame (15), the tail portion of swing arm are hinged on vehicle frame；It is characterized by: hydraulic system include: hydraulic pump (1), power source (2),
Ith 2/2-way reversal valve (3), the IIth 2/2-way reversal valve (4), the IIIth 2/2-way reversal valve (5), the IVth 2/2-way
Reversal valve (6), the Vth 2/2-way reversal valve (7), the VIth 2/2-way reversal valve (8), combination cylinder (9), the Ith accumulator
(10), the IIth accumulator (11), fuel tank (12)；Combination cylinder piston rod earrings is hinged on the middle part of swing arm, combination cylinder cylinder body earrings
It is hinged on vehicle frame；In the hydraulic system, power source and hydraulic pump are mechanically connected, hydraulic pump inlet port connected tank, hydraulic pump
Oil outlet is connected to the Ith hydraulic fluid port of the Ith hydraulic fluid port of the IIIth 2/2-way reversal valve and the IIth 2/2-way reversal valve, and the IIIth two
IIth hydraulic fluid port of two logical reversal valves is connected to the Ith hydraulic fluid port of rodless cavity on the right side of combination cylinder and the IVth 2/2-way reversal valve, and the IVth
IIth hydraulic fluid port of 2/2-way reversal valve is connected to the Ith hydraulic fluid port of the Ith accumulator and the Vth 2/2-way reversal valve, and the Vth two
IIth hydraulic fluid port of two logical reversal valves is connected to the IIth hydraulic fluid port of the VIth 2/2-way reversal valve and fuel tank, the commutation of the VIth 2/2-way
Ith hydraulic fluid port of valve is connected to rodless cavity on the left of the IIth accumulator and combination cylinder, and combination cylinder rod chamber and the IIth 2/2-way commutate
The Ith hydraulic fluid port connection of the IIth hydraulic fluid port and the Ith 2/2-way reversal valve of valve, the IIth hydraulic fluid port and oil of the Ith 2/2-way reversal valve
Case connection；
The combination cylinder is welded by more than two hydraulic cylinders, and the cylinder body of all hydraulic cylinder is welded to each other, all hydraulic
The piston rod part of cylinder is welded to each other, and uses common earrings, the constituted mode of the combination cylinder are as follows:
Two hydraulic cylinders weld together side by side, and the Ith hydraulic cylinder body (9-1) and the IIth hydraulic cylinder body (9-2) are welded as one
Body, the Ith hydraulic cylinder piston rod (9-5) and the IIth hydraulic cylinder piston rod (9-6) are welded on the common earrings of piston rod (9-10) jointly
On, the common earrings of cylinder body (9-9) is welded on combination cylinder bottom；
Alternatively, three hydraulic cylinders, three vertex in equilateral triangle are distributed and weld, the Ith hydraulic cylinder body (9-1) and the
II hydraulic cylinder body (9-2), the IIIth hydraulic cylinder body (9-3) are welded as a whole, the Ith hydraulic cylinder piston rod (9-5) and the IIth liquid
Pressure cylinder piston bar (9-6), the IIIth hydraulic cylinder piston rod (9-7) are welded on jointly on the common earrings of piston rod (9-10), and cylinder body is total
Same earrings (9-9) is welded on combination cylinder bottom；
It is the Ith hydraulic cylinder body (9-1), the IIth hydraulic alternatively, square four vertex of four hydraulic cylinders are distributed and weld
Cylinder cylinder body (9-2), the IIIth hydraulic cylinder body (9-3), the IVth hydraulic cylinder body (9-4) are welded as a whole, the Ith hydraulic cylinder piston rod
(9-5), the IIth hydraulic cylinder piston rod (9-6), the IIIth hydraulic cylinder piston rod (9-7), the IVth hydraulic cylinder piston rod (9-8) weld jointly
It connects on the common earrings of piston rod (9-10), the common earrings of cylinder body (9-9) is welded on combination cylinder bottom；
Rodless cavity and rod chamber can be connect with dynamical element on the left of the combination cylinder, the Ith hydraulic fluid port of dynamical element with combine
Rodless cavity connection on the left of cylinder, the IIth hydraulic fluid port of dynamical element is connected to combination cylinder rod chamber, and dynamical element and pump motor, motor are same
Axis connection.
2. combination cylinder energy conservation hoisting system according to claim 1, it is characterised in that: the IIth accumulator can be by
Dynamical element replaces, and the Ith hydraulic fluid port of dynamical element is connected to rodless cavity on the left of combination cylinder, the IIth hydraulic fluid port of dynamical element and combination cylinder
The connection of left side rod chamber, and dynamical element and hydraulic pump, power source are coaxially connected.
3. combination cylinder energy conservation hoisting system according to claim 1, it is characterised in that: the dynamical element is variable liquid
Press pump or variable hydraulic motor；The hydraulic pump is volume adjustable hydraulic pump；The power source is engine or motor.
4. combination cylinder energy conservation hoisting system according to claim 1, it is characterised in that: described the Ith the-the VI 6 two
Two logical reversal valves are the valve groups of switching regulator reversal valve or hydraulic control/electric proportional multi-way valve or inserted valve composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811208139.XA CN109253120A (en) | 2018-10-17 | 2018-10-17 | Combination cylinder energy conservation hoisting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811208139.XA CN109253120A (en) | 2018-10-17 | 2018-10-17 | Combination cylinder energy conservation hoisting system |
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| CN109253120A true CN109253120A (en) | 2019-01-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111219369A (en) * | 2020-01-23 | 2020-06-02 | 福建工程学院 | Closed hydraulic circuit double-hydraulic-cylinder actuator system |
| CN112695834A (en) * | 2021-01-18 | 2021-04-23 | 长沙理工大学 | Triangular-arrangement combined energy-saving hydraulic cylinder and energy-saving engineering machinery |
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