CN204083197U - Fork truck hydraulic transmission gearbox proportional hydraulic control system - Google Patents
Fork truck hydraulic transmission gearbox proportional hydraulic control system Download PDFInfo
- Publication number
- CN204083197U CN204083197U CN201420525352.4U CN201420525352U CN204083197U CN 204083197 U CN204083197 U CN 204083197U CN 201420525352 U CN201420525352 U CN 201420525352U CN 204083197 U CN204083197 U CN 204083197U
- Authority
- CN
- China
- Prior art keywords
- electro
- reversing valve
- proportion reversing
- clutch
- valve
- 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
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Control Of Transmission Device (AREA)
Abstract
The utility model discloses a kind of fork truck hydraulic transmission gearbox proportional hydraulic control system, comprise oil pump, electro-hydraulic proportion reversing valve A, electro-hydraulic proportion reversing valve B, F clutch, R clutch, main pressure regulator valve, fluid torque converter, relief valve and cooler, F clutch is connected with electro-hydraulic proportion reversing valve A, R clutch is connected with electro-hydraulic proportion reversing valve B, electro-hydraulic proportion reversing valve A and electro-hydraulic proportion reversing valve B is attempted by oily delivery side of pump, oil delivery side of pump is also connected with main pressure regulator valve, fluid torque converter, relief valve and cooler, oil pump is through main pressure regulator valve, fluid torque converter and cooler are connected to lubricating oil path, oil pump is connected to oil return circuit through main pressure regulator valve and relief valve.The technical program eliminates shift shock, avoids the burning friction plate phenomenon because artificial operating habit lack of standardization causes, achieve comfortable, steadily, transmission effect fast, make fork truck have humanized driving operation performance.
Description
Technical field
The utility model belongs to the control technique field of hydraulic transmission gearbox, particularly relates to a kind of fork truck hydraulic transmission gearbox proportional hydraulic control system.
Background technique
At present, the conventional fluid torque transfer gear box of Domestic Forklift adopts inching valve and solenoid directional control valve combination to control the hydraulic control system of shift process, adopt the gearbox of this control system to have clutch cohesive process to fix, shift process impacts large, the gearshift time is long, and the burning friction plate phenomenon because driver's operating habit lack of standardization causes (making gearbox be in semi-linkage state for a long time as stepped on fine motion pedal for a long time) cannot be avoided, a large amount of power consumption when braking of putting into gear causes oil temperature to rise on fluid torque converter, system energy consumption strengthens, service life reduction.
Summary of the invention
In order to solve above-mentioned technical problem, the purpose of this utility model is to provide a kind of fork truck hydraulic transmission gearbox proportional hydraulic control system, clutch cohesive process is changed according to different vehicle features, eliminate shift shock, avoid the burning friction plate phenomenon because artificial operating habit lack of standardization causes, the energy ezpenditure that effective control is unnecessary, reduce system energy consumption, improve lifetime of system, realize simultaneously comfortable, steadily, transmission effect fast, make fork truck have humanized driving operation performance.
To achieve the above object, the utility model have employed following technological scheme:
A kind of fork truck hydraulic transmission gearbox proportional hydraulic control system, comprise oil pump, electro-hydraulic proportion reversing valve A, electro-hydraulic proportion reversing valve B, F clutch, R clutch, main pressure regulator valve, fluid torque converter, relief valve and cooler, F clutch is connected with electro-hydraulic proportion reversing valve A, R clutch is connected with electro-hydraulic proportion reversing valve B, electro-hydraulic proportion reversing valve A and electro-hydraulic proportion reversing valve B is attempted by oily delivery side of pump, oil delivery side of pump is also connected with main pressure regulator valve, fluid torque converter, relief valve and cooler, oil pump is through main pressure regulator valve, fluid torque converter and cooler are connected to lubricating oil path, oil pump is connected to oil return circuit through main pressure regulator valve and relief valve, when electro-hydraulic proportion reversing valve A and electro-hydraulic proportion reversing valve B does not all work, F clutch and R clutch all connect oil return circuit, are all in separated state, unpowered transmission, and gearbox is neutral position state, when electro-hydraulic proportion reversing valve A works, partial power oil enters F clutch through electro-hydraulic proportion reversing valve A, and F clutch engages, electro-hydraulic proportion reversing valve B does not work, and R clutch connects oil return circuit, is in separated state, power move forward direction transmit, gearbox is forward gear state, when electro-hydraulic proportion reversing valve B works, partial power oil enters R clutch through electro-hydraulic proportion reversing valve B, and R clutch engages, electro-hydraulic proportion reversing valve A does not work, F clutch takes back oil and is in separated state, power shrink back direction transmit, gearbox is the gear state that falls back.
As preferably, the two ends of described oil pump are connected to oil purifier A and oil purifier B respectively.
As preferably, described electro-hydraulic proportion reversing valve A and electro-hydraulic proportion reversing valve B is two-position three-way valve.
The utility model is owing to have employed above technological scheme, electro-hydraulic proportion reversing valve is adopted to be the hydraulic control system that primary component forms whole ratio hydraulic transmission gearbox, replace solenoid valve, trimmer valve and the inching valve in legacy system, whole system is more simple, and the engaging process of F, R clutch can be controlled arbitrarily by controller, can realize quick, steady, shock-free gear shift operation, make the operation of gearbox more comfortable, the life-span of gearbox is longer.The utility model changes clutch cohesive process according to different vehicle features, eliminate shift shock, avoid the burning friction plate phenomenon because artificial operating habit lack of standardization causes, the energy ezpenditure that effective control is unnecessary, reduce system energy consumption, improve lifetime of system, realize simultaneously comfortable, steadily, transmission effect fast, make fork truck have humanized driving operation performance.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is made a detailed explanation.
Embodiment 1:
A kind of fork truck hydraulic transmission gearbox proportional hydraulic control system as shown in Figure 1, comprise oil purifier A1, oil pump 2, oil purifier B3, electro-hydraulic proportion reversing valve A4, electro-hydraulic proportion reversing valve B5, F clutch 6, R clutch 7, main pressure regulator valve 8, fluid torque converter 9, relief valve 10 and cooler 11, F clutch 6 is connected with electro-hydraulic proportion reversing valve A4, R clutch 7 is connected with electro-hydraulic proportion reversing valve B5, electro-hydraulic proportion reversing valve A4 and electro-hydraulic proportion reversing valve B5 is attempted by the output terminal of oil pump 2, the output terminal of oil pump 2 is also connected with main pressure regulator valve 8, fluid torque converter 9, relief valve 10 and cooler 11, oil pump 2 is through main pressure regulator valve 8, fluid torque converter 9 and cooler 11 are connected to lubricating oil path, oil pump 2 is connected to oil return circuit through main pressure regulator valve 8 and relief valve 10, oil pump 2 provides power oil for this hydraulic system.Main pressure regulator valve 8 and relief valve 10 make system pressure be set as 0.9 ~ 1.1MPa, and unnecessary hydraulic oil enters lubricating oil path flow through torque-converters 9, cooler 11 after main pressure regulator valve 8 overflow after.Torque-converters oil circuit 0.3 ~ 0.5MPa pressure is controlled by relief valve 10.When electro-hydraulic proportion reversing valve A4 and electro-hydraulic proportion reversing valve B5 does not all work, F clutch 6 and R clutch 7 all connect oil return circuit, are all in separated state, unpowered transmission, and gearbox is neutral position state; When electro-hydraulic proportion reversing valve A4 works, partial power oil enters F clutch 6, F clutch 6 through electro-hydraulic proportion reversing valve A4 and engages, electro-hydraulic proportion reversing valve B5 does not work, and R clutch 7 connects oil return circuit, is in separated state, power move forward direction transmit, gearbox is forward gear state; When electro-hydraulic proportion reversing valve B5 works, partial power oil enters R clutch 7, R clutch 7 through electro-hydraulic proportion reversing valve B5 and engages, electro-hydraulic proportion reversing valve A4 does not work, F clutch takes back oil and is in separated state, power shrink back direction transmit, gearbox is the gear state that falls back.The two ends of described oil pump 2 are connected to oil purifier A1 and oil purifier B3 respectively.Described electro-hydraulic proportion reversing valve A4 and electro-hydraulic proportion reversing valve B5 is two-position three-way valve.
It is emphasized that: be only preferred embodiment of the present utility model above, not any pro forma restriction is done to the utility model, every above embodiment is done according to technical spirit of the present utility model any simple modification, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (3)
1. a fork truck hydraulic transmission gearbox proportional hydraulic control system, it is characterized in that, comprise oil pump (2), electro-hydraulic proportion reversing valve A (4), electro-hydraulic proportion reversing valve B (5), F clutch (6), R clutch (7), main pressure regulator valve (8), fluid torque converter (9), relief valve (10) and cooler (11), F clutch (6) is connected with electro-hydraulic proportion reversing valve A (4), R clutch (7) is connected with electro-hydraulic proportion reversing valve B (5), electro-hydraulic proportion reversing valve A (4) and electro-hydraulic proportion reversing valve B (5) is attempted by the output terminal of oil pump (2), the output terminal of oil pump (2) is also connected with main pressure regulator valve (8), fluid torque converter (9), relief valve (10) and cooler (11), oil pump (2) is through main pressure regulator valve (8), fluid torque converter (9) and cooler (11) are connected to lubricating oil path, oil pump (2) is connected to oil return circuit through main pressure regulator valve (8) and relief valve (10), when electro-hydraulic proportion reversing valve A (4) and electro-hydraulic proportion reversing valve B (5) does not all work, F clutch (6) and R clutch (7) all connect oil return circuit, all be in separated state, unpowered transmission, gearbox is neutral position state, during electro-hydraulic proportion reversing valve A (4) work, partial power oil enters F clutch (6) through electro-hydraulic proportion reversing valve A (4), F clutch (6) engages, electro-hydraulic proportion reversing valve B (5) does not work, R clutch (7) connects oil return circuit, be in separated state, power move forward direction transmit, gearbox is forward gear state, during electro-hydraulic proportion reversing valve B (5) work, partial power oil enters R clutch (7) through electro-hydraulic proportion reversing valve B (5), R clutch (7) engages, electro-hydraulic proportion reversing valve A (4) does not work, F clutch takes back oil and is in separated state, power shrink back direction transmit, gearbox is the gear state that falls back.
2. a kind of fork truck hydraulic transmission gearbox proportional hydraulic control system according to claim 1, is characterized in that, the two ends of described oil pump (2) are connected to oil purifier A (1) and oil purifier B (3) respectively.
3. a kind of fork truck hydraulic transmission gearbox proportional hydraulic control system according to claim 1, it is characterized in that, described electro-hydraulic proportion reversing valve A (4) and electro-hydraulic proportion reversing valve B (5) are two-position three-way valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420525352.4U CN204083197U (en) | 2014-09-12 | 2014-09-12 | Fork truck hydraulic transmission gearbox proportional hydraulic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420525352.4U CN204083197U (en) | 2014-09-12 | 2014-09-12 | Fork truck hydraulic transmission gearbox proportional hydraulic control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204083197U true CN204083197U (en) | 2015-01-07 |
Family
ID=52175920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420525352.4U Active CN204083197U (en) | 2014-09-12 | 2014-09-12 | Fork truck hydraulic transmission gearbox proportional hydraulic control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204083197U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108439285A (en) * | 2018-02-08 | 2018-08-24 | 徐州工程学院 | A kind of carbon tetrachloride reaction kettle linkage platform |
| CN112248802A (en) * | 2020-11-09 | 2021-01-22 | 江苏悦达智能农业装备有限公司 | Vehicle transmission system |
| CN112324906A (en) * | 2020-11-09 | 2021-02-05 | 江苏悦达智能农业装备有限公司 | Vehicle transmission system and clutch switching control method thereof |
-
2014
- 2014-09-12 CN CN201420525352.4U patent/CN204083197U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108439285A (en) * | 2018-02-08 | 2018-08-24 | 徐州工程学院 | A kind of carbon tetrachloride reaction kettle linkage platform |
| CN108439285B (en) * | 2018-02-08 | 2020-03-27 | 徐州工程学院 | Carbon tetrachloride reation kettle linkage platform |
| CN112248802A (en) * | 2020-11-09 | 2021-01-22 | 江苏悦达智能农业装备有限公司 | Vehicle transmission system |
| CN112324906A (en) * | 2020-11-09 | 2021-02-05 | 江苏悦达智能农业装备有限公司 | Vehicle transmission system and clutch switching control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103097779B (en) | Hydraulic controller for an automatic transmission of a motor vehicle | |
| CN202612588U (en) | Hydraulic gear-shifting control system for double clutch transmission | |
| CN205013672U (en) | Hydraulic control system and car of clutch gearbox | |
| CN106233044A (en) | There is the gear arrangement of hydraulic system | |
| CN204083197U (en) | Fork truck hydraulic transmission gearbox proportional hydraulic control system | |
| CN103115148B (en) | vehicle, automatic transmission and hydraulic control system thereof | |
| CN204099575U (en) | The proportional hydraulic control system of fork truck hydraulic transmission gearbox | |
| MX2016003589A (en) | Transmission hydraulic control system. | |
| CN201992052U (en) | Double-clutch control device for double-clutch automatic gearbox | |
| CN204114099U (en) | A kind of hydraulic transmission gearbox proportional hydraulic control system for fork truck | |
| CN105626844A (en) | Hydraulic control system of wet type double-clutch speed changing box | |
| CN106812939A (en) | A kind of auto-manual transmission hydraulic control system | |
| CN201152297Y (en) | Engineering machinery speed-changer electrohydraulic gear shifting control valve | |
| MX2016003834A (en) | Transmission hydraulic control system. | |
| CN204083196U (en) | A kind of fork truck hydraulic transmission gearbox proportional hydraulic control system | |
| MX363503B (en) | Transmission hydraulic control system. | |
| CN104315109A (en) | Hydraulic transmission gearbox | |
| CN204083198U (en) | A kind of proportional hydraulic control system of fork truck hydraulic transmission gearbox | |
| CN203832474U (en) | Steering and braking hydraulic system | |
| CN104265878B (en) | The brake fine motion integrated control system of fork truck hydraulic transmission gearbox | |
| CN104019225B (en) | A kind of torque converter control system | |
| CN108302079B (en) | Gearbox power output control system and control method | |
| CN108360600B (en) | Power distribution control system and control method for loader | |
| CN204312690U (en) | The shifting control system of automatic transmission | |
| CN202812167U (en) | Hydraulic control system capable of buffering L-gear shifting impact in automatic transmission |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 312000 No. 22 Zhongxing Road, Zhejiang City, Shaoxing City, Zhejiang province. Patentee after: Zhejiang Golden Road Polytron Technologies Inc Address before: 312000 Zhongxing Avenue 22, Shaoxing, Zhejiang. Patentee before: SHAOXING JINDAO GEAR BOX CO., LTD. |