CN2802149Y - Forklift multiple directional control valve - Google Patents
Forklift multiple directional control valve Download PDFInfo
- Publication number
- CN2802149Y CN2802149Y CN 200520101939 CN200520101939U CN2802149Y CN 2802149 Y CN2802149 Y CN 2802149Y CN 200520101939 CN200520101939 CN 200520101939 CN 200520101939 U CN200520101939 U CN 200520101939U CN 2802149 Y CN2802149 Y CN 2802149Y
- Authority
- CN
- China
- Prior art keywords
- valve
- oil
- pressure
- directional control
- multiple directional
- 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.)
- Expired - Lifetime
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- Forklifts And Lifting Vehicles (AREA)
Abstract
The utility model relates to a novel multipath reversal valve of a fork truck, which comprises a rising valve and a tilt valve which are assembled together and both are mutually provided with an oil inlet and an oil return port, wherein a main overflow valve is connected between the oil inlet and the oil return port. The utility model is characterized in that the rising lift valve and the tilt valve are selectively connected to a shunt overflow valve. The function of the utility model can satisfy the requirement of a difference in systematical overall pressure and shunt pressure, when each valve blade is at the neutral position, a pressure oil passage passes through a mid passage, does not converge with an oil return passage and flows out from another oil port to provide a control oil passage for controlling the variable hydraulic pump.
Description
Technical field
The utility model relates to a kind of fork truck hydraulic control component, a kind of specifically hydraulic multichannel conversion valve, and the equipment of control fork truck is realized the inclination of hoisting of pallet fork and door frame; Control oil channel is used for variable capacity oil pump is controlled simultaneously.
Background technique
The split blade type multiple directional control valve that existing fork truck is adopted, its relief valve is one, be installed on the filler opening, the maximum pressure of control whole system, this maximum pressure is generally the maximum pressure of the oil circuit that hoists, and when each valve of multiple directional control valve was positioned at meta, the pressure oil circuit flowed back to fuel tank after communicating by middle Lu Houyu oil circuit.
Yet, for the hydrostatic lift truck that adopts open hydraulic system because equipment and all same hydraulic system of traveling gear, when the pressure of equipment and traveling gear not simultaneously, existing multiple directional control valve is difficult to meet the demands.
The model utility content
The technical assignment of the technical problems to be solved in the utility model and proposition is to overcome the defective that existing multiple directional control valve is difficult to export different pressures, at first provide a kind of novel forklift multiple directional control valve, to satisfy by a multiple directional control valve to equipment and the different pressure of traveling gear output.For this reason, the utility model is taked following technological scheme:
A kind of novel forklift multiple directional control valve comprises lift valve and the inclined valve that are bolted together, and the two has common filler opening and return opening, and is connected with total relief valve between filler opening and return opening; It is characterized in that described lift valve and inclined valve optionally are connected with relief valve along separate routes.
As the further of technique scheme improved and replenish, when specifically implementing, can select the technical measures of following additional (specifically) for use:
Described lift valve and three six-way valves of inclined valve, and when two valves are in meta, filler opening is communicated with road binders mouth on one side.
The utility model adopts split-type structural, except the filler opening at selector valve is equipped with total relief valve, also optionally is connected with relief valve along separate routes at a lift valve and inclined valve, and its function can satisfy the total pressure of system and the different requirement of pressure along separate routes; And each valve block is when meta, and its pressure oil circuit does not converge with oil circuit after by middle road, but flows out from another hydraulic fluid port, so that the control oil channel of controlled variable oil hydraulic pump to be provided.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is the hydraulic pressure function figure of structure shown in Figure 1.
Among the figure: 1. oil-feed valve block, 2. total relief valve, 3. hoist relief valve, 4. hoist valve block, 5. inclination valve block, 6. fuel-displaced valve block.
Embodiment
Fork truck multiple directional control valve as shown in Figure 1, assembled by six valve blocks such as oil-feed valve block 1, total relief valve 2, the relief valve 3 that hoists, the valve block 4 that hoists, inclination valve block 5, fuel-displaced valve blocks 6.
As shown in Figure 2, the hydraulic pressure function of fork truck multiple directional control valve shown in Figure 1 is: after pressure oil P entered oil-feed valve block 1, if each valve block is in meta, fluid is flowed out by the hydraulic fluid port on the fuel-displaced valve block 6 after by middle paths became control oil channel P1;
When the valve block 4 that hoists moves right, fluid flows to lift oil tank through one-way valve from the a1 mouth, oil circuit through valve block inside communicates with the relief valve 3 that hoists simultaneously, and when the pressure that hoists hoisted relief valve set pressure above this, the relief valve that hoists was opened overflow and played the safety protection effect; When the valve block 4 that hoists was moved to the left, the fluid of lift oil tank flowed back to mailbox through oil circuit T;
Left and right when mobile when inclination valve block 5, fluid flows to dump ram through a2 or b2 hydraulic fluid port respectively, realizes leaning forward or the hypsokinesis action of door frame, this moment system pressure by total relief valve 2 controls; The pressure of other executive component in all right control system of total relief valve.
Claims (2)
1, a kind of novel forklift multiple directional control valve comprises lift valve and the inclined valve that are bolted together, and the two has common filler opening and return opening, and is connected with total relief valve between filler opening and return opening; It is characterized in that described lift valve and inclined valve optionally are connected with relief valve along separate routes.
2, novel forklift multiple directional control valve according to claim 1 is characterized in that three six-way valves of described lift valve and inclined valve, and when two valves are in meta filler opening is communicated with one side road binders mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520101939 CN2802149Y (en) | 2005-04-30 | 2005-04-30 | Forklift multiple directional control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520101939 CN2802149Y (en) | 2005-04-30 | 2005-04-30 | Forklift multiple directional control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2802149Y true CN2802149Y (en) | 2006-08-02 |
Family
ID=36846857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520101939 Expired - Lifetime CN2802149Y (en) | 2005-04-30 | 2005-04-30 | Forklift multiple directional control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2802149Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104030199A (en) * | 2014-05-26 | 2014-09-10 | 安徽合力股份有限公司 | Forklift hydraulic system with bypass oil way throttling speed regulation loop |
-
2005
- 2005-04-30 CN CN 200520101939 patent/CN2802149Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104030199A (en) * | 2014-05-26 | 2014-09-10 | 安徽合力股份有限公司 | Forklift hydraulic system with bypass oil way throttling speed regulation loop |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150430 Granted publication date: 20060802 |