CN108584808A - A kind of low cost of reach truck accessory, single control hydraulic system - Google Patents
A kind of low cost of reach truck accessory, single control hydraulic system Download PDFInfo
- Publication number
- CN108584808A CN108584808A CN201810569619.2A CN201810569619A CN108584808A CN 108584808 A CN108584808 A CN 108584808A CN 201810569619 A CN201810569619 A CN 201810569619A CN 108584808 A CN108584808 A CN 108584808A
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- electromagnetic reversing
- way electromagnetic
- oil cylinder
- reversing valves
- way
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- 239000000446 fuel Substances 0.000 claims abstract description 4
- 239000003921 oil Substances 0.000 description 118
- 239000010720 hydraulic oil Substances 0.000 description 7
- 239000010729 system oil Substances 0.000 description 7
- 210000000664 rectum Anatomy 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/22—Hydraulic devices or systems
-
- 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
-
- 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
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
- F15B2211/7114—Multiple output members, e.g. multiple hydraulic motors or cylinders with direct connection between the chambers of different actuators
- F15B2211/7128—Multiple output members, e.g. multiple hydraulic motors or cylinders with direct connection between the chambers of different actuators the chambers being connected in parallel
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Combustion & Propulsion (AREA)
- Chemical & Material Sciences (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention provides a kind of low cost of reach truck accessory, single control hydraulic system, including reach oil cylinder, dump ram, sidesway oil cylinder and hydraulic circuit, the oil revolving end that the fuel feeding end of hydraulic circuit passes sequentially through 2/2-way solenoid-operated proportional reversal valve, the first two four-way electromagnetic reversing valves and hydraulic circuit connects to form hydraulic circuit；The actuator port of the first two four-way electromagnetic reversing valves is connect with second, third and the 4th two four-way electromagnetic reversing valve respectively, the second two four-way electromagnetic reversing valves are connect with reach oil cylinder, two four-way electromagnetic reversing valves of third are connect with dump ram, and the 4th two four-way electromagnetic reversing valve is connect with sidesway oil cylinder.The full scale control of reach truck accessory is realized by a 2/2-way solenoid-operated proportional reversal valve and four two four-way electromagnetic reversing valves, and only need the input of a proportional quantities, the quantitative requirement to the analog output port of electric-control system is reduced, cost can be largely reduced.
Description
Technical field
The invention belongs to forklift hydraulic systems, and in particular to a kind of low cost of reach truck accessory, single control hydraulic pressure system
System.
Background technology
Reach truck accessory generally has the function of that goods shelf is moved forward and backward, pallet fork tilts and pallet fork sidesway this three,
The precision of each action can be preferably controlled using proportional valve control, so application of the proportioning valve in forklift hydraulic system is also more next
It is more extensive.The accessory proportionally controlled hydraulic system principle that the prior art uses is as shown in Figure 1, each execution acts respectively by right
The 3-position 4-way solenoid-operated proportional reversal valve answered is controlled, but 3-position 4-way solenoid-operated proportional reversal valve cost is higher, corresponding
Three functions will use three 3-position 4-way solenoid-operated proportional reversal valves, amount to there are six proportional quantities input, accessory is caused to compare entirely
Example control hydraulic system cost is larger, is unfavorable for marketing.
Invention content
In order to overcome the shortcomings of the prior art, the present invention provides a kind of full scale control of reach truck accessory
Hydraulic system processed reduces hydraulic system cost, to improve the competitiveness of product in market on the basis of not changing ratio control.
For achieving the above object, present invention employs following technical solutions：
A kind of low cost of reach truck accessory, single control hydraulic system, including reach oil cylinder, dump ram, sidesway oil cylinder and
Hydraulic circuit, the fuel feeding end of the hydraulic circuit pass sequentially through 2/2-way solenoid-operated proportional reversal valve, the first two four-way electromagnetics
The oil revolving end of reversal valve and hydraulic circuit connects to form hydraulic circuit；The actuator port of the first two four-way electromagnetic reversing valves
Connect respectively with the second two four-way electromagnetic reversing valves, two four-way electromagnetic reversing valves of third and the 4th two four-way electromagnetic reversing valve
It connects, the second two four-way electromagnetic reversing valves are connect with reach oil cylinder, two four-way electromagnetic reversing valves of third and dump ram
Connection, the 4th two four-way electromagnetic reversing valve are connect with sidesway oil cylinder.
First actuator port of further scheme, the first two four-way electromagnetic reversing valves is distinguished by the first four-way pipe
With the second two 2 mouthfuls of oil inlet Ps of four-way electromagnetic reversing valve, the oil inlet P 3 of two four-way electromagnetic reversing valves of third and the 4th liang
The oil inlet P 4 of position four-way electromagnetic reversing valve connects；Second actuator port of the first two four-way electromagnetic reversing valves passes through the two or four
The siphunculus oil return inlet T 3 with two T2 mouthfuls of the oil inlet of the second two four-way electromagnetic reversing valves, third four-way electromagnetic reversing valves respectively
It is connected with the oil return inlet T 4 of the 4th two four-way electromagnetic reversing valve.
Further scheme, two actuator ports of the second two four-way electromagnetic reversing valves respectively with the nothing of reach oil cylinder
Rod cavity, rod chamber connection；Two actuator ports of two four-way electromagnetic reversing valves of third respectively with the rodless cavity of dump ram, have bar
Chamber connects；The sidesway oil cylinder includes that oil cylinder is moved in left side, oil cylinder, two works of the 4th two four-way electromagnetic reversing valve are moved in right side
Make hydraulic fluid port to connect with the rodless cavity of left side shifting oil cylinder, right side shifting oil cylinder respectively；The rod chamber of oil cylinder is moved in left side and oil cylinder is moved on right side
Rod chamber connection.
Present invention employs a 2/2-way solenoid-operated proportional reversal valves and four two four-way electromagnetic reversing valves to realize
The full scale control of reach truck accessory, cost be far below using three 3-position 4-way solenoid-operated proportional reversal valves at
This；The 3-position 4-way solenoid-operated proportional reversal valve price of single 8 latus rectum is at 1500 yuan in the market, and three then up to 4500 yuan；And it uses
At 200 yuan, single 8 latus rectum 2/2-way solenoid-operated proportional changes the present invention program two four-way electromagnetic reversing valve prices of single 8 latus rectum
To valve price at 700 yuan or so, the present invention program system schema cost is at 1500 yuan or so, therefore before using the present invention program separate unit
Shifting formula fork truck is only by cost-effective 3000 yuan/platform on solenoid valve.
And the input of a proportional quantities is only needed, that is, passes through the proportion electro-magnet of 2/2-way solenoid-operated proportional reversal valve
Oil mass is controlled by size of current, and then realizes the tune to reach oil cylinder, dump ram, sidesway oil cylinder movement speed respectively
It is whole, so as to reduce the quantitative requirement to the analog output port of electric-control system, can further reduce the cost.
Wherein：There are two working positions for 2/2-way solenoid-operated proportional reversal valve, when the work of 2/2-way solenoid-operated proportional reversal valve
Make at left position, oil inlet P mouth is connected to for A mouthfuls with actuator port, and left side proportion electro-magnet can pass through electric control system controls electricity
Stream size, to control the flow of entrance execution oil cylinder, closely controls to change the P mouthful openings of sizes with A mouthful of actuator port
The movement speed of oil cylinder；When being operated in right position, oil inlet P mouth is off for A mouthfuls with actuator port.
The first two four-way electromagnetic reversing valves are operated in left position when the solenoid is energized there are two working position, this
When, B1 mouthfuls with the second actuator port of 1 mouthful of oil inlet P is connected to, and the first A1 mouthfuls of actuator port is connected to oil return inlet T 1；When electromagnet is disconnected
When electric, it is operated in right position, then 1 mouthful of oil inlet P is connected to for A1 mouthfuls with the first actuator port, the second B1 mouthfuls of actuator port and oil return inlet T 1
Connection.
The second two four-way electromagnetic reversing valves, two four-way electromagnetic reversing valves of third and the 4th two four-way electromagnetics change
To two four-way electromagnetic reversing valves that valve is said function, there are two working positions for two four-way electromagnetic reversing valves, with second liang
Illustrate for the four-way electromagnetic reversing valve of position, when its electromagnet Y3 is powered, be operated in left position, at this point, 2 mouthfuls of oil inlet P and first
A2 mouthfuls of connections of actuator port, the second B2 mouthfuls of actuator port are connected to oil return inlet T 2；When electromagnet Y3 is powered off, Fig. 2 institutes are worked in
The right position shown is in off-state between two each hydraulic fluid ports of four-way electromagnetic reversing valve at this time.
Description of the drawings
Fig. 1 is the Hydraulic System Principle schematic diagram of the prior art,
Fig. 2 is the Hydraulic System Principle schematic diagram of the present invention.
Specific implementation mode
Below in conjunction with the accompanying drawings, the present invention is further described by embodiment.
As shown in Fig. 2, a kind of low cost of reach truck accessory, single control hydraulic system, including reach oil cylinder 6, inclination
Oil cylinder 7, sidesway oil cylinder and hydraulic circuit, the fuel feeding end of the hydraulic circuit pass sequentially through 2/2-way solenoid-operated proportional reversal valve 1,
The first two four-way electromagnetic reversing valves 2 connect to form hydraulic circuit with the oil revolving end of hydraulic circuit；Described the first two four are powered
The actuator port of magnetic reversal valve 2 respectively with the second two four-way electromagnetic reversing valves 3, two four-way electromagnetic reversing valves 4 of third and
4 two four-way electromagnetic reversing valves 5 connect, and the second two four-way electromagnetic reversing valves 3 are connect with reach oil cylinder 6, third two
Four-way electromagnetic reversing valve 4 is connect with dump ram 7, and the 4th two four-way electromagnetic reversing valve 5 is connect with sidesway oil cylinder.
A1 mouthfuls of the first actuator port of further scheme, the first two four-way electromagnetic reversing valves 2 passes through the first four-way
Pipe 10 respectively with 2 mouthfuls of the oil inlet P of the second two four-way electromagnetic reversing valves 3, the oil inlet of two four-way electromagnetic reversing valves 4 of third
The oil inlet P 4 of P3 and the 4th two four-way electromagnetic reversing valve 5 connects；Second working oil of the first two four-way electromagnetic reversing valves 2
Mouthfuls B1 mouthfuls pass through the second four-way pipe 11 two T2 mouthfuls of oil inlet, third four-ways with the second two four-way electromagnetic reversing valves 3 respectively
The oil return inlet T 3 of solenoid directional control valve 4 and the oil return inlet T 4 of the 4th two four-way electromagnetic reversing valve 5 connect.
Further scheme, two actuator ports of the second two four-way electromagnetic reversing valves 3 respectively with reach oil cylinder 6
Rodless cavity, rod chamber connection；Two actuator ports of two four-way electromagnetic reversing valves 4 of third respectively with the rodless cavity of dump ram 7,
Rod chamber connects；The sidesway oil cylinder includes that oil cylinder 8 is moved in left side, oil cylinder 9, the 4th two four-way electromagnetic reversing valve are moved in right side
5 two actuator ports move oil cylinder 8 with left side respectively, the rodless cavity of right side shifting oil cylinder 9 is connect；Left side move oil cylinder 8 rod chamber with
The rod chamber connection of oil cylinder 9 is moved on right side.
The course of work of the hydraulic system of the present invention is as follows：
When executing Forward action, the Y1 proportion electro-magnets of 2/2-way solenoid-operated proportional reversal valve 1 are powered, the second two four-ways
The Y3 electromagnet of solenoid directional control valve 3 is powered, and the hydraulic oil from system oil passage is through 2/2-way solenoid-operated proportional reversal valve 1
A mouthfuls of oil inlet P mouth, actuator port pass through 1 mouthful of the oil inlet P of the first two four-way electromagnetic reversing valves 2, the first actuator port A1
Mouthful, the first four-way pipe 10,2 mouthfuls of the oil inlet P of the second two four-way electromagnetic reversing valves 3, A2 mouthful of the first actuator port, which enter, to move forward
The rodless cavity of oil cylinder 6 pushes the piston rod of reach oil cylinder 6 to stretch out, and the rod chamber oil return of reach oil cylinder 6 passes sequentially through the second two
2 mouthfuls of B2 mouthfuls of the second actuator port of four-way electromagnetic reversing valve 3, oil return inlet T, the second four-way pipe 11, the first two four-way electromagnetics change
To B1 mouthfuls of the second actuator port of valve 2, the oil return line of 1 mouthful of connection hydraulic system of oil return inlet T, when needing to adjust speed of advancement,
By the Y1 proportion electro-magnet electrical currents of electric control system controls 2/2-way solenoid-operated proportional reversal valve 1, pass through two to change
The flow of two energization magnetic proportional reversing valves 1 of position realizes speed of advancement adjustment；When movement is made after execution, 2/2-way electromagnetism ratio
The Y1 proportion electro-magnets of example reversal valve 1 are powered, and the Y2 electromagnet of the first two four-way electromagnetic reversing valves 2 is powered, the second two four
The Y3 electromagnet of electric change valve 3 is powered, and the hydraulic oil from system oil passage is through 2/2-way solenoid-operated proportional reversal valve 1
Oil inlet P mouth, A mouthfuls of actuator port, 1 mouthful of the oil inlet P of the first two four-way electromagnetic reversing valves 2, B1 mouthfuls of the second actuator port,
Enter Forward by the second four-way pipe 11,2 mouthfuls of the oil return inlet T of the second two four-way electromagnetic reversing valves 3, B2 mouthfuls of the second actuator port
The rod chamber of oil cylinder 6 pushes the piston rod of reach oil cylinder 6 to withdraw, and the rodless cavity oil return of reach oil cylinder 6 passes sequentially through the second two
2 mouthfuls of A2 mouthfuls of the first actuator port of four-way electromagnetic reversing valve 3, oil inlet P, the first four-way pipe 10, the first two four-way electromagnetics change
To A1 mouthfuls of the first actuator port of valve 2, the oil return line of 1 mouthful of connection hydraulic system of oil return inlet T, when moving speed after needing to adjust,
By the Y1 proportion electro-magnet electrical currents of electric control system controls 2/2-way solenoid-operated proportional reversal valve 1, pass through two to change
The flow of two energization magnetic proportional reversing valves 1 of position moves speed adjustment after realization.
When executing hypsokinesis action, the Y1 proportion electro-magnets of 2/2-way solenoid-operated proportional reversal valve 1 are powered, third two
The Y4 electromagnet of four-way electromagnetic reversing valve 4 is powered, hydraulic oil warp of the hydraulic oil from system oil passage from system oil passage
A mouthfuls of oil inlet P mouth, the actuator port of 2/2-way solenoid-operated proportional reversal valve 1 pass through the first two four-way electromagnetic reversing valves 2
1 mouthful of oil inlet P, A1 mouthfuls of the first actuator port, the first four-way pipe 10,3 mouthfuls of the oil inlet P of two four-way electromagnetic reversing valves 4 of third,
First A3 mouthfuls of actuator port enters the rodless cavity of dump ram 7, pushes the piston rod of dump ram 7 to stretch out, dump ram 7 has
Rod cavity oil return passes sequentially through B3 mouthfuls of second actuator port of two four-way electromagnetic reversing valves 4 of third, 3 mouthfuls of oil return inlet T, the second four-way
Pipe 11, the oil return of 1 mouthful of B1 mouthfuls of the second actuator port of the first two four-way electromagnetic reversing valves 2, oil return inlet T connection hydraulic system
Road passes through the Y1 proportion electro-magnets of electric control system controls 2/2-way solenoid-operated proportional reversal valve 1 when needing to adjust hypsokinesis speed
Electrical current realizes the adjustment of hypsokinesis speed to change the flow by 2/2-way solenoid-operated proportional reversal valve 1；Before execution
It fascinates when making, the Y1 proportion electro-magnets of 2/2-way solenoid-operated proportional reversal valve 1 are powered, the first two four-way electromagnetic reversing valves 2
Y2 electromagnet is powered, and the Y4 electromagnet of two four-way electromagnetic reversing valves 4 of third is powered, the hydraulic oil warp from system oil passage
2/2-way solenoid-operated proportional reversal valve 1, oil inlet P mouth, A mouthfuls of actuator port, the oil inlet of the first two four-way electromagnetic reversing valves 2
Mouthful P1 mouthfuls, B1 mouthfuls of the second actuator port, by the second four-way pipe 11, two four-way electromagnetic reversing valves 4 of third 3 mouthfuls of oil return inlet T,
Second B3 mouthfuls of actuator port enters the rod chamber of dump ram 7, pushes the piston rod of dump ram 7 to withdraw, the nothing of dump ram 7
Rod cavity oil return passes sequentially through A3 mouthfuls of first actuator port of two four-way electromagnetic reversing valves 4 of third, 3 mouthfuls of oil inlet P, the first four-way
Pipe 10, the oil return of 1 mouthful of A1 mouthfuls of the first actuator port of the first two four-way electromagnetic reversing valves 2, oil return inlet T connection hydraulic system
Road passes through the Y1 proportion electro-magnets of electric control system controls 2/2-way solenoid-operated proportional reversal valve 1 when needs, which adjust, leans forward speed
Electrical current realizes speed adjustment of leaning forward to change the flow by 2/2-way solenoid-operated proportional reversal valve 1.
When execution left side is mobile to be made, the Y1 proportion electro-magnets of 2/2-way solenoid-operated proportional reversal valve 1 are powered, the 4th liang
The Y5 electromagnet of position four-way electromagnetic reversing valve 5 is powered, hydraulic pressure of the hydraulic oil from system oil passage from system oil passage
Oil inlet P mouth, actuator port A mouthful of the oil through 2/2-way solenoid-operated proportional reversal valve 1 pass through the first two four-way electromagnetic reversing valves
21 mouthful of oil inlet P, A1 mouthfuls of the first actuator port, the oil inlet P 4 of the first the 10, the 4th two four-way electromagnetic reversing valve 5 of four-way pipe
Mouth, A4 mouthfuls of the first actuator port enter the rodless cavity that oil cylinder 8 is moved in left side, and the piston rod that oil cylinder 8 is moved on the left of promotion stretches out, and left side is moved
The rod chamber oil return of oil cylinder 8 enters right side and moves 9 rod chamber of oil cylinder, pushes right side to move 9 piston rod of oil cylinder and withdraws, oil cylinder 9 is moved on right side
Rodless cavity oil return passes sequentially through B4 mouthfuls of the second actuator port of the 4th two four-way electromagnetic reversing valve 5,4 mouthfuls of oil return inlet T, and the two or four
Siphunculus 11, the oil return of 1 mouthful of B1 mouthfuls of the second actuator port of the first two four-way electromagnetic reversing valves 2, oil return inlet T connection hydraulic system
Road passes through the Y1 ratio electromagnetism of electric control system controls 2/2-way solenoid-operated proportional reversal valve 1 when needing to adjust left side shifting speed
Iron electrical current realizes that speed adjustment is moved in left side to change the flow by 2/2-way solenoid-operated proportional reversal valve 1.
When executing that right side is mobile to be made, the Y1 proportion electro-magnets of 2/2-way solenoid-operated proportional reversal valve 1 are powered, the first two
The Y2 electromagnet of four-way electromagnetic reversing valve 2 is powered, and the Y5 electromagnet of the 4th two four-way electromagnetic reversing valve 5 is powered, from being
The hydraulic oil for oil passage of uniting is through 2/2-way solenoid-operated proportional reversal valve 1, oil inlet P mouth, A mouthfuls of actuator port, the first two four
1 mouthful of the oil inlet P of electric change valve 2, B1 mouthfuls of the second actuator port pass through 11, the 4th two four-way electromagnetics of the second four-way pipe
4 mouthfuls of the oil return inlet T of reversal valve 5, B4 mouthfuls of the second actuator port enter the rodless cavity that oil cylinder 9 is moved on right side, and right side is pushed to move oil cylinder 9
Piston rod stretches out, and the rod chamber oil return that oil cylinder 8 is moved in left side enters left side shifting 8 rod chamber of oil cylinder, and left side is pushed to move 8 piston rod of oil cylinder
It withdraws, the first actuator port A4 that 8 rodless cavity oil return oil return of oil cylinder passes sequentially through the 4th two four-way electromagnetic reversing valve 5 is moved in left side
Mouthful, 4 mouthfuls of oil inlet P, the first four-way pipe 10, A1 mouthfuls of the first actuator port of the first two four-way electromagnetic reversing valves 2, oil return inlet T 1
The oil return line of mouth connection hydraulic system passes through electric control system controls 2/2-way electromagnetism ratio when needing to adjust right side shifting speed
The Y1 proportion electro-magnet electrical currents of example reversal valve 1, it is real to change the flow by 2/2-way solenoid-operated proportional reversal valve 1
Speed adjustment is moved on existing right side.
In addition, the embodiment and attached drawing proposed in this specification are only used for the preferred reality of example the object of the invention
Apply example, it is no intended to limit the scope of the invention, therefore understands that can make without departing from the spirit and scope of the invention
Other equivalent schemes and modification, also all belong to the scope of protection of the present invention.
Claims (3)
1. a kind of low cost of reach truck accessory, single control hydraulic system, including reach oil cylinder（6）, dump ram（7）, side
Move oil cylinder and hydraulic circuit, it is characterised in that：The fuel feeding end of the hydraulic circuit passes sequentially through the commutation of 2/2-way solenoid-operated proportional
Valve（1）, the first two four-way electromagnetic reversing valves（2）It connect to form hydraulic circuit with the oil revolving end of hydraulic circuit；Described first liang
Position four-way electromagnetic reversing valve（2）Actuator port respectively with the second two four-way electromagnetic reversing valves（3）, two four-way electromagnetics of third
Reversal valve（4）With the 4th two four-way electromagnetic reversing valve（5）Connection, the second two four-way electromagnetic reversing valves（3）With Forward
Oil cylinder（6）Connection, two four-way electromagnetic reversing valves of third（4）With dump ram（7）Connection, the 4th two four-way electromagnetic reversing valve
（5）It is connect with sidesway oil cylinder.
2. low cost, the single control hydraulic system of a kind of reach truck accessory according to claim 1, it is characterised in that：
The first two four-way electromagnetic reversing valves（2）The first actuator port（A1 mouthfuls）Pass through the first four-way pipe（10）Respectively with second
Two four-way electromagnetic reversing valves（3）2 mouthfuls of oil inlet P, two four-way electromagnetic reversing valves of third（4）Oil inlet P 3 and the 4th liang
Position four-way electromagnetic reversing valve（5）Oil inlet P 4 connect；The first two four-way electromagnetic reversing valves（2）The second actuator port（B1
Mouthful）Pass through the second four-way pipe（11）Respectively with the second two four-way electromagnetic reversing valves（3）T2 mouthfuls of oil inlet, two four-ways of third
Solenoid directional control valve（4）Oil return inlet T 3 and the 4th two four-way electromagnetic reversing valve（5）Oil return inlet T 4 connect.
3. low cost, the single control hydraulic system of a kind of reach truck accessory according to claim 2, it is characterised in that：
The second two four-way electromagnetic reversing valves（3）Two actuator ports respectively with reach oil cylinder（6）Rodless cavity, rod chamber connect
It connects；Two four-way electromagnetic reversing valves of third（4）Two actuator ports respectively with dump ram（7）Rodless cavity, rod chamber connection；
The sidesway oil cylinder includes that oil cylinder is moved in left side（8）, right side move oil cylinder（9）, the 4th two four-way electromagnetic reversing valve（5）Two
Actuator port moves oil cylinder with left side respectively（8）, right side move oil cylinder（9）Rodless cavity connection；Oil cylinder is moved in left side（8）Rod chamber with
Oil cylinder is moved on right side（9）Rod chamber connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810569619.2A CN108584808B (en) | 2018-06-05 | 2018-06-05 | Low-cost single-control hydraulic system of forward forklift attachment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810569619.2A CN108584808B (en) | 2018-06-05 | 2018-06-05 | Low-cost single-control hydraulic system of forward forklift attachment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108584808A true CN108584808A (en) | 2018-09-28 |
| CN108584808B CN108584808B (en) | 2024-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810569619.2A Active CN108584808B (en) | 2018-06-05 | 2018-06-05 | Low-cost single-control hydraulic system of forward forklift attachment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112209305A (en) * | 2020-10-30 | 2021-01-12 | 合力工业车辆（上海）有限公司 | Hydraulic system of storage forklift |
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| WO2013159590A1 (en) * | 2012-04-28 | 2013-10-31 | 安徽合力股份有限公司 | Energy regeneration type forklift hydraulic system |
| CN104340928A (en) * | 2014-09-11 | 2015-02-11 | 宁波力达物流设备有限公司 | Multifunctional hydraulic fork truck |
| CN204200730U (en) * | 2014-10-17 | 2015-03-11 | 天津市海王星海上工程技术股份有限公司 | A kind of hydraulic system of pin-type lifting device |
| CN106015137A (en) * | 2016-07-18 | 2016-10-12 | 江苏大学 | Multifunctional hydraulic system |
| CN208632031U (en) * | 2018-06-05 | 2019-03-22 | 安徽合力股份有限公司 | A kind of low cost of reach truck accessory, single control hydraulic system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112209305A (en) * | 2020-10-30 | 2021-01-12 | 合力工业车辆（上海）有限公司 | Hydraulic system of storage forklift |
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