CN208327311U - A kind of full scale control hydraulic system of reach truck accessory - Google Patents
A kind of full scale control hydraulic system of reach truck accessory Download PDFInfo
- Publication number
- CN208327311U CN208327311U CN201820880340.1U CN201820880340U CN208327311U CN 208327311 U CN208327311 U CN 208327311U CN 201820880340 U CN201820880340 U CN 201820880340U CN 208327311 U CN208327311 U CN 208327311U
- Authority
- CN
- China
- Prior art keywords
- oil cylinder
- oil
- way electromagnetic
- electromagnetic reversing
- mouthfuls
- 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.)
- Active
Links
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model provides a kind of full scale control hydraulic system of reach truck accessory, including reach oil cylinder, dump ram, sidesway oil cylinder and 3-position 4-way solenoid-operated proportional reversal valve, the oil inlet of the 3-position 4-way solenoid-operated proportional reversal valve, oil return opening are respectively with the oil circuit connection of hydraulic system, and the actuator port of the 3-position 4-way solenoid-operated proportional reversal valve passes through two four-way electromagnetic reversing valves respectively and the reach oil cylinder, dump ram, sidesway oil cylinder connect one to one to form respective hydraulic circuit.The utility model, which uses a 3-position 4-way solenoid-operated proportional reversal valve, and three two four-way electromagnetic reversing valves are realizes the full scale control of reach truck accessory, and cost is far below the cost using three 3-position 4-way solenoid-operated proportional reversal valves；And only need the input of two proportional quantities, it is possible to reduce to the quantitative requirement of the analog output port of electric-control system, further reduce the cost.
Description
Technical field
The utility model belongs to forklift hydraulic system, and in particular to a kind of full scale control of reach truck accessory is hydraulic
System.
Background technique
Reach truck accessory generally has the function of that fork carriage is moved forward and backward, pallet fork tilts and pallet fork sidesway this three,
The precision of each movement 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 prior art use accessory proportionally controlled hydraulic system principle as shown in Figure 1, each execution movement respectively by pair
The 3-position 4-way solenoid-operated proportional reversal valve answered is controlled, but 3-position 4-way solenoid-operated proportional reversal valve higher cost, 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.
Utility model content
In order to overcome the shortcomings of the prior art, the utility model provides a kind of full ratio of reach truck accessory
Example control hydraulic system, reduces hydraulic system cost, so that the market for improving product is competing on the basis of not changing ratio control
Strive power.
To realize above-mentioned purpose of utility model, the utility model is adopted the technical scheme that
A kind of full scale control hydraulic system of reach truck accessory, including reach oil cylinder, dump ram, sidesway oil cylinder
With 3-position 4-way solenoid-operated proportional reversal valve, the oil inlet of the 3-position 4-way solenoid-operated proportional reversal valve, oil return opening respectively with it is hydraulic
The oil circuit connection of system, the actuator port of the 3-position 4-way solenoid-operated proportional reversal valve pass through two four-way electromagnetics respectively and change
It connects one to one to form respective hydraulic circuit to valve and the reach oil cylinder, dump ram, sidesway oil cylinder.
Further scheme, the first actuator port of institute's rheme four-way electromagnetic proportional reversing valve by the first tee tube respectively with
The oil inlet end connection of 2 mouthfuls of the oil inlet P, third tee tube of the first two four-way electromagnetic reversing valves, the third tee tube it is defeated
The outlet oil inlet P 4 with two four-way electromagnetic reversing valves of oil inlet P 3 and third of the second two four-way electromagnetic reversing valves respectively
Connection；Second actuator port of the 3-position 4-way solenoid-operated proportional reversal valve by the second tee tube respectively with the first two four-ways
The oil inlet end connection of T2 mouthfuls of the oil inlet of solenoid directional control valve, the 4th tee tube, the output end of the 4th tee tube respectively with second liang
The oil return inlet T 3 of position four-way electromagnetic reversing valve, the connection of the oil return inlet T 4 of two four-way electromagnetic reversing valves of third.
Further scheme, two actuator ports of the first two four-way electromagnetic reversing valves respectively with the nothing of reach oil cylinder
Rod cavity, rod chamber connection；Two actuator ports of the second two four-way electromagnetic reversing valves respectively with the rodless cavity of dump ram, have bar
Chamber connection；The sidesway oil cylinder includes that oil cylinder is moved in left side, oil cylinder, two works of two four-way electromagnetic reversing valves of the third are moved in right side
Make the rodless cavity that hydraulic fluid port moves oil cylinder with left side shifting oil cylinder, right side respectively to connect, the rod chamber of oil cylinder is moved in the left side and right side is moved
The rod chamber of oil cylinder is connected to.
The utility model uses a 3-position 4-way solenoid-operated proportional reversal valve and three two four-way electromagnetic reversing valves are
The full scale control of reach truck accessory is realized, cost, which is far below, uses three 3-position 4-way solenoid-operated proportional reversal valves
Cost；The 3-position 4-way solenoid-operated proportional reversal valve price of single 8 latus rectum is at 1500 yuan in the market, and uses the present invention program single
At 200 yuan, the present invention program system schema cost uses the 8 four-way electromagnetic reversing valve prices of latus rectum two at 2100 yuan or so
The present invention program separate unit reach truck is only by 2400 yuan/platform of save the cost on solenoid valve.
And the input of two proportional quantities is only needed, i.e. the both ends proportion electro-magnet of 3-position 4-way solenoid-operated proportional reversal valve
Oil mass is controlled by size of current, so realize respectively to reach oil cylinder, dump ram, sidesway oil cylinder movement speed tune
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 three working positions for 3-position 4-way solenoid-operated proportional reversal valve, as the Y1 of 3-position 4-way solenoid-operated proportional reversal valve
Proportion electro-magnet be powered, Y2 proportion electro-magnet power-off after, work left position, at this point, its oil inlet P mouth and the first actuator port
A mouthfuls of connections, the second B mouthful of actuator port is connected to T mouthfuls, Y1 proportion electro-magnet can by electric control system controls size of current thus
Change P mouthfuls and B mouthfuls of A mouthfuls of the first actuator port of openings of sizes and the second actuator port and T mouthfuls of openings of sizes, to control
System enters the flow for executing oil cylinder, movement speed that is close and controlling oil cylinder；When Y1 proportion electro-magnet powers off, Y2 proportion electro-magnet is logical
When electric, work in right position, at this point, its oil inlet P mouth is connected to for B mouthfuls with the second actuator port, the first A mouthfuls of actuator port and T mouthfuls of companies
Logical, Y2 proportion electro-magnet can also change P mouthfuls by electric control system controls size of current and open with B mouthfuls of the second actuator port
A mouthful of mouthful size and the first actuator port are closely controlled with T mouthful of openings of sizes to control the flow of entrance execution oil cylinder
The movement speed of oil cylinder；When two proportion electro-magnets power off, 3-position 4-way solenoid-operated proportional reversal valve is in middle position, each oil
Off-state is between mouthful.
Three two four-way electromagnetic reversing valves with the first two four-way electromagnetic reversing valve citings, work as electricity there are two working position
Magnet Y3 be powered when, work in left position, at this point, 2 mouthfuls of its oil inlet P with the first actuator port A2 mouthfuls be connected to, the second actuator port
B2 mouthfuls are connected to oil return inlet T 2；When electromagnet Y3 power-off, work in right position, at this time two each hydraulic fluid ports of four-way electromagnetic reversing valve it
Between be in off-state.
Detailed description of the invention
Fig. 1 is the Hydraulic System Principle schematic diagram of the prior art,
Fig. 2 is the Hydraulic System Principle schematic diagram of the utility model.
Specific embodiment
With reference to the accompanying drawing, by embodiment, the utility model is further described.
As shown in Fig. 2, a kind of full scale of reach truck accessory controls hydraulic system, including reach oil cylinder 5, inclination oil
Cylinder 6, sidesway oil cylinder and 3-position 4-way solenoid-operated proportional reversal valve 1, the oil inlet of the 3-position 4-way solenoid-operated proportional reversal valve 1 return
For hydraulic fluid port respectively with the oil circuit connection of hydraulic system, the actuator port of the 3-position 4-way solenoid-operated proportional reversal valve 1 passes through one respectively
A two four-way electromagnetic reversing valves and the reach oil cylinder 5, dump ram 6, sidesway oil cylinder connect one to one to be formed respectively
Hydraulic circuit.
A mouthfuls of the first actuator port of further scheme, institute's rheme four-way electromagnetic proportional reversing valve 1 pass through the first tee tube 9
It is connect respectively with the first two 2 mouthfuls of the oil inlet Ps of four-way electromagnetic reversing valve 2, the oil inlet ends of third tee tube 11, the described 3rd 3
The output end of siphunculus 11 two four-way electromagnetic reversing valves of oil inlet P 3 and third with the second two four-way electromagnetic reversing valves 3 respectively
4 oil inlet P 4 connects；B mouthfuls of the second actuator port of the 3-position 4-way solenoid-operated proportional reversal valve 1 pass through the second tee tube 10
It is connect respectively with the first two T2 mouthfuls of the oil inlets of four-way electromagnetic reversing valve 2, the oil inlet ends of the 4th tee tube 12, the 4th tee tube
12 output end is returned with two four-way electromagnetic reversing valves 4 of oil return inlet T 3, third of the second two four-way electromagnetic reversing valves 3 respectively
Hydraulic fluid port T4 connection.
Further scheme, two actuator ports of the first two four-way electromagnetic reversing valves 2 respectively with reach oil cylinder 5
Rodless cavity, rod chamber connection；Two actuator ports of the second two four-way electromagnetic reversing valves 3 respectively with the rodless cavity of dump ram 6,
Rod chamber connection；The sidesway oil cylinder includes that oil cylinder 7 is moved in left side, oil cylinder 8, two four-way electromagnetic reversing valves of the third are moved in right side
4 two actuator ports move oil cylinder 7 with left side respectively, the rodless cavity of right side shifting oil cylinder 8 is connect, and the left side shifting oil cylinder 7 has bar
Chamber is connected to the rod chamber that oil cylinder 8 is moved on right side.
When executing Forward movement, the Y1 proportion electro-magnet of 3-position 4-way solenoid-operated proportional reversal valve 1 is powered, and the first two
The Y3 electromagnet of four-way electromagnetic reversing valve 2 is powered, and the hydraulic oil from system oil passage is through 3-position 4-way solenoid-operated proportional reversal valve
1 oil inlet P mouth, A mouthfuls of the first actuator port pass through the first tee tube 9, the oil inlet of the first two four-way electromagnetic reversing valves 2
P2 mouthfuls, A2 mouthfuls of the first actuator port rodless cavities into reach oil cylinder 5 push the piston rod of reach oil cylinder 5 to stretch out, reach oil cylinder
5 rod chamber oil return passes sequentially through B2 mouthfuls of the second actuator port of the first two four-way electromagnetic reversing valves 2,2 mouthfuls of oil return inlet T, and
Two tee tubes 10, time of B mouthfuls of the second actuator port, oil return inlet T mouth connection hydraulic system of 3-position 4-way solenoid-operated proportional reversal valve 1
Oil circuit passes through the Y1 ratio electromagnetism of electric control system controls 3-position 4-way solenoid-operated proportional reversal valve 1 when needing to adjust speed of advancement
Iron electrical current realizes speed of advancement adjustment to change the flow for passing through 3-position 4-way solenoid-operated proportional reversal valve 1；Work as execution
When moving back movement, the Y2 proportion electro-magnet of 3-position 4-way solenoid-operated proportional reversal valve 1 is powered, the first two four-way electromagnetic reversing valves 2
Y3 electromagnet be powered, oil inlet P mouth of the hydraulic oil from system oil passage through 3-position 4-way solenoid-operated proportional reversal valve 1, the
Two B mouthfuls of actuator ports pass through the second tee tube 10,2 mouthfuls of the oil return inlet T of the first two four-way electromagnetic reversing valves 2, the second working oil
Mouthfuls of B2 mouthful rod chambers for entering reach oil cylinder 5, push the piston rod withdrawal of reach oil cylinder 5, the rodless cavity oil return of reach oil cylinder 5 according to
Secondary A2 mouthfuls of the first actuator port for passing through the first two four-way electromagnetic reversing valves 2,2 mouthfuls of oil inlet P, the first tee tube 9, three four
A mouthfuls of the first actuator port, the oil return inlet T mouth of energization magnetic proportional reversing valve 1 are connected to the oil return line of hydraulic system, after needing to adjust
When moving speed, by the Y2 proportion electro-magnet electrical current of electric control system controls 3-position 4-way solenoid-operated proportional reversal valve 1, to change
The flow of 3-position 4-way solenoid-operated proportional reversal valve 1 is crossed in accommodation, and realization moves back speed adjustment.
When executing hypsokinesis movement, the Y1 proportion electro-magnet of 3-position 4-way solenoid-operated proportional reversal valve 1 is powered, and the second two
The Y4 electromagnet of four-way electromagnetic reversing valve 3 is powered, and the hydraulic oil from system oil passage is through 3-position 4-way solenoid-operated proportional reversal valve
1 oil inlet P mouth, A mouthfuls of the first actuator port are changed by the first tee tube 9, third tee tube 11, the second two four-way electromagnetics
The rodless cavity for entering dump ram 6 to 3 mouthfuls of the oil inlet P of valve 3, A3 mouthfuls of the first actuator port, pushes the piston rod of dump ram 6
Stretch out, the rod chamber oil return of dump ram 6 pass sequentially through the second two four-way electromagnetic reversing valves 3 B3 mouthfuls of the second actuator port,
3 mouthfuls of oil return inlet T, the 4th tee tube 12, the second tee tube 10, the second actuator port B of 3-position 4-way solenoid-operated proportional reversal valve 1
The oil return line that mouth, oil return inlet T mouth are connected to hydraulic system passes through electric control system controls three four when needing to adjust hypsokinesis speed
The Y1 proportion electro-magnet electrical current of energization magnetic proportional reversing valve 1, to change through 3-position 4-way solenoid-operated proportional reversal valve 1
Flow realizes the adjustment of hypsokinesis speed；When executing forward swing, the Y2 proportion electro-magnet of 3-position 4-way solenoid-operated proportional reversal valve 1
It is powered, the Y4 electromagnet of the second two four-way electromagnetic reversing valves 3 is powered, and the hydraulic oil from system oil passage is through 3-position 4-way
The oil inlet P mouth of solenoid-operated proportional reversal valve 1, B mouthfuls of the second actuator port pass through the second tee tube 10, the 4th tee tube 12, second
3 mouthfuls of the oil return inlet T of two four-way electromagnetic reversing valves 3, B3 mouthfuls of the second actuator port rod chambers into dump ram 6, promotion are inclined
The piston rod of oblique oil cylinder 6 is withdrawn, and the rodless cavity oil return of dump ram 6 passes sequentially through the of the second two four-way electromagnetic reversing valves 3
One A3 mouthfuls of actuator port, 3 mouthfuls of oil inlet P, third tee tube 11, the first tee tube 9,3-position 4-way solenoid-operated proportional reversal valve 1
The oil return line of first A mouthfuls of actuator port, oil return inlet T mouth connection hydraulic system passes through automatically controlled system when speed is leaned forward in needs adjustment
The Y2 proportion electro-magnet electrical current of system control 3-position 4-way solenoid-operated proportional reversal valve 1, passes through 3-position 4-way electromagnetism to change
The flow of proportional reversing valve 1 realizes speed adjustment of leaning forward.
When execution left side is mobile to be made, the Y1 proportion electro-magnet of 3-position 4-way solenoid-operated proportional reversal valve 1 is powered, third two
The Y5 electromagnet of position four-way electromagnetic reversing valve 4 is powered, and the hydraulic oil from system oil passage commutates through 3-position 4-way solenoid-operated proportional
The oil inlet P mouth of valve 1, A mouthfuls of the first actuator port pass through two the first tee tube 9, third tee tube 11, third four-way electromagnetics
4 mouthfuls of the oil inlet P of reversal valve 4, A4 mouthfuls of the first actuator port entrance left sides move the rodless cavity of oil cylinder 7, push left side shifting oil cylinder 7
Piston rod stretches out, and the rod chamber oil return that oil cylinder 7 is moved in left side enters right side and moves 8 rod chamber of oil cylinder, and right side is pushed to move 8 piston rod of oil cylinder
Withdraw, right side move 8 rodless cavity oil return of oil cylinder pass sequentially through two four-way electromagnetic reversing valves 4 of third B4 mouthfuls of the second actuator port,
4 mouthfuls of oil return inlet T, the 4th tee tube 12, the second tee tube 10, the second actuator port B of 3-position 4-way solenoid-operated proportional reversal valve 1
The oil return line of mouth, oil return inlet T mouth connection hydraulic system passes through electric control system controls three when needing to adjust left side shifting speed
The Y1 proportion electro-magnet electrical current of four-way electromagnetic proportional reversing valve 1 passes through 3-position 4-way solenoid-operated proportional reversal valve 1 to change
Flow, realize left side move speed adjustment.
When execution right side is mobile to be made, the Y2 proportion electro-magnet of 3-position 4-way solenoid-operated proportional reversal valve 1 is powered, third two
The Y5 electromagnet of position four-way electromagnetic reversing valve 4 is powered, and the hydraulic oil from system oil passage commutates through 3-position 4-way solenoid-operated proportional
The oil inlet P mouth of valve 1, B mouthfuls of the second actuator port pass through two the second tee tube 10, the 4th tee tube 12, third four-way electromagnetics
4 mouthfuls of the oil return inlet T of reversal valve 4, B4 mouthfuls of the second actuator port entrance right sides move the rodless cavity of oil cylinder 8, push right side shifting oil cylinder 8
Piston rod stretches out, and the rod chamber oil return that oil cylinder 7 is moved in left side enters left side and moves 7 rod chamber of oil cylinder, and left side is pushed to move 7 piston rod of oil cylinder
It withdraws, the first actuator port A4 that 7 rodless cavity oil return oil return of oil cylinder passes sequentially through two four-way electromagnetic reversing valves 4 of third is moved in left side
Mouth, 4 mouthfuls of oil inlet P, third tee tube 11, the first tee tube 9, the first actuator port A of 3-position 4-way solenoid-operated proportional reversal valve 1
The oil return line of mouth, oil return inlet T mouth connection hydraulic system passes through electric control system controls three when needing to adjust right side shifting speed
The Y2 proportion electro-magnet electrical current of four-way electromagnetic proportional reversing valve 1 passes through 3-position 4-way solenoid-operated proportional reversal valve 1 to change
Flow, realize right side move speed adjustment.
In addition, embodiment proposed in this specification and attached drawing are only used for the excellent of example the utility model aim
Select embodiment, it is no intended to the scope of the utility model is limited, therefore understands that without departing substantially from the spirit and scope of the utility model
In the case of can make other equivalent schemes and modification, also belong to the protection scope of the utility model.
Claims (3)
1. a kind of full scale of reach truck accessory controls hydraulic system, including reach oil cylinder (5), dump ram (6), sidesway
Oil cylinder and 3-position 4-way solenoid-operated proportional reversal valve (1), it is characterised in that: the 3-position 4-way solenoid-operated proportional reversal valve (1) into
Hydraulic fluid port, oil return opening respectively with the oil circuit connection of hydraulic system, the actuator port of the 3-position 4-way solenoid-operated proportional reversal valve (1) point
It Tong Guo not two four-way electromagnetic reversing valves and the reach oil cylinder (5), dump ram (6), sidesway oil cylinder one-to-one correspondence
Connection forms respective hydraulic circuit.
2. a kind of full scale of reach truck accessory according to claim 1 controls hydraulic system, it is characterised in that: institute
(A mouthfuls) of the first actuator port of rheme four-way electromagnetic proportional reversing valve (1) by the first tee tube (9) respectively with the first two four
The oil inlet end connection of 2 mouthfuls of the oil inlet P of electric change valve (2), third tee tube (11), the third tee tube (11) it is defeated
Outlet respectively with two four-way electromagnetic reversing valves (4) of oil inlet P 3 and third of the second two four-way electromagnetic reversing valves (3) into
Hydraulic fluid port P4 connection；(B mouthfuls) of the second actuator port of the 3-position 4-way solenoid-operated proportional reversal valve (1) pass through the second tee tube (10)
It is connect respectively with the first two T2 mouthfuls of the oil inlets of four-way electromagnetic reversing valve (2), the oil inlet ends of the 4th tee tube (12), the four or three
Two four-way electromagnetics of oil return inlet T 3, third of the output end of siphunculus (12) respectively with the second two four-way electromagnetic reversing valves (3) change
It is connected to the oil return inlet T 4 of valve (4).
3. a kind of full scale of reach truck accessory according to claim 2 controls hydraulic system, it is characterised in that: institute
Two actuator ports for stating the first two four-way electromagnetic reversing valves (2) are connect with rodless cavity, the rod chamber of reach oil cylinder (5) respectively；
Two actuator ports of the second two four-way electromagnetic reversing valves (3) are connect with rodless cavity, the rod chamber of dump ram (6) respectively；Institute
Stating sidesway oil cylinder includes that oil cylinder (7) are moved in left side, oil cylinder (8) are moved on right side, two works of two four-way electromagnetic reversing valves (4) of the third
Make the rodless cavity that hydraulic fluid port moves oil cylinder (8) with left side shifting oil cylinder (7), right side respectively to connect, the rod chamber of oil cylinder (7) is moved in the left side
The rod chamber for moving oil cylinder (8) with right side is connected to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820880340.1U CN208327311U (en) | 2018-06-05 | 2018-06-05 | A kind of full scale control hydraulic system of reach truck accessory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820880340.1U CN208327311U (en) | 2018-06-05 | 2018-06-05 | A kind of full scale control hydraulic system of reach truck accessory |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208327311U true CN208327311U (en) | 2019-01-04 |
Family
ID=64773315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820880340.1U Active CN208327311U (en) | 2018-06-05 | 2018-06-05 | A kind of full scale control hydraulic system of reach truck accessory |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208327311U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108529510A (en) * | 2018-06-05 | 2018-09-14 | 安徽合力股份有限公司 | A kind of full scale control hydraulic system of reach truck accessory |
-
2018
- 2018-06-05 CN CN201820880340.1U patent/CN208327311U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108529510A (en) * | 2018-06-05 | 2018-09-14 | 安徽合力股份有限公司 | A kind of full scale control hydraulic system of reach truck accessory |
| CN108529510B (en) * | 2018-06-05 | 2024-05-28 | 安徽合力股份有限公司 | Full-proportion control hydraulic system of forward forklift attachment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103671335A (en) | Load-sensitive electric proportional multi-loop valve | |
| CN108679005B (en) | A kind of multistage Multipurpose hydraulic booster that pressure ratio is variable | |
| CN108252977A (en) | A kind of oil path distribution valve for large-flow hydraulic system | |
| CN102155449B (en) | Numerically controlled leading type proportional flow valve | |
| CN105822618B (en) | A kind of descending valve plate of fork truck electro-hydraulic proportional multi-way valve | |
| CN208327311U (en) | A kind of full scale control hydraulic system of reach truck accessory | |
| CN104196777A (en) | Programmable integrated control system capable of controlling inlet and outlet oil ways independently | |
| CN102734246B (en) | Hydrovalve and pressure compensating method, hydraulic valve bank, hydraulic system and engineering machinery | |
| CN103950870A (en) | Forklift hydraulic system with energy recovery and double-pump oil supply functions | |
| CN109654079A (en) | The outlet throttling load port separate control valves that full switch valve group is closed | |
| CN211195764U (en) | Simple electric control lifting hydraulic system for tractor | |
| CN208632031U (en) | A kind of low cost of reach truck accessory, single control hydraulic system | |
| CN108529510A (en) | A kind of full scale control hydraulic system of reach truck accessory | |
| CN208856867U (en) | A kind of lift truck attachment hydraulic system | |
| CN207583718U (en) | The outlet throttling load port separate control valves that full switch valve group is closed | |
| CN109734026B (en) | Fork truck and fork truck hydraulic system | |
| CN108584808A (en) | A kind of low cost of reach truck accessory, single control hydraulic system | |
| CN208856866U (en) | A kind of hydraulic plumbing system of side-shifting distance-regulating pallet fork | |
| CN106168234B (en) | A kind of constant displacement pump variable delivery hydraulic system | |
| CN104030199B (en) | Forklift hydraulic system with bypass oil way throttling speed regulation loop | |
| CN203670337U (en) | Load-sensitive electric proportional multi-way valve | |
| CN202629185U (en) | Multi-connection water inlet electromagnetic valve | |
| CN206449032U (en) | A kind of road roller hydraulic system and road roller | |
| CN212803807U (en) | Process control air pressure system and air pressure driving device | |
| CN201176984Y (en) | Reclaimed oil device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |