CN201902384U - Multi-way reversing valve of multifunctional fork truck - Google Patents
Multi-way reversing valve of multifunctional fork truck Download PDFInfo
- Publication number
- CN201902384U CN201902384U CN2010206533755U CN201020653375U CN201902384U CN 201902384 U CN201902384 U CN 201902384U CN 2010206533755 U CN2010206533755 U CN 2010206533755U CN 201020653375 U CN201020653375 U CN 201020653375U CN 201902384 U CN201902384 U CN 201902384U
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- hydraulic fluid
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- fork truck
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Abstract
A multi-way reversing valve of a multifunctional fork truck belongs to the technical field of hydraulic elements, and comprises a valve body composed of an oil inlet piece, a lifting piece, an inclined piece, an accessory piece and a return oil piece which are connected and fixed through high-strength bolts and sequentially pass through an internal oil line; a priority valve, a system main overflow valve, a turning overflow valve, an unloading valve, an electromagnetic valve and a confluence one-way valve are arranged in the oil inlet piece in a matching way; the priority valve, the system main overflow valve, the turning overflow valve and a system main overflow valve are sequentially connected through an oil line; and the confluence one-way valve and the unloading valve are connected with the electromagnetic valve through another oil line. By the adoption of the priority valve, when a load sensing steering system of a fork truck does not work, the turning flow quantity is converged to a working system, the rising speed of a gantry is improved, and the full utilization of pump output flow quantity and the purpose of energy conservation can be realized; a plug-in electromagnetic valve is adopted to control the unloading valve, the working mode of a single pump or double pump through remote control can be realized to achieve better energy-saving effect; and since the one-way valve is arranged between the two oil lines, the mutual interference between the two oil lines can be avoided.
Description
Technical field
The utility model belongs to technical field of hydraulic elements, is specifically related to a kind of pressure-gradient control valve, unloading valve, interflow one-way valve and multiple directional control valve and is integrated in one, and have multi-functional fork truck multiple directional control valves such as preferential and off-load.
Background technique
At present, the domestic multi-way valve of continuing to use the monostable bypass type of fork truck for many years, generally comprise the monostable diverter valve that is installed on the oil-feed valve body and one group of multiple directional control valve that is the working oil path fuel feeding is formed, to satisfy that hoisting of fork of forklift truck descends and the requirement that function such as turns to of the anteversion and retroversion of door frame and car body.This multiple directional control valve with monostable diverter valve, though its monostable diverter valve preferentially provides stable oil sources to steering system, but when steering system is not worked, its knuckle section fluid is still and directly flows back to fuel tank, cause the wasting of resources and be converted into system's heating and intensification, cause the reduction in system effectiveness and life-span.
The model utility content
At the above-mentioned problems in the prior art, the purpose of this utility model is to provide a kind of pressure-gradient control valve, unloading valve, interflow one-way valve and multiple directional control valve to be integrated in one, and has multi-functional fork truck multiple directional control valves such as preferential and off-load.
Described a kind of multifunction fork truck multiple directional control valve, comprise valve body, described valve body is by the oil-feed sheet that is connected and fixed by high-strength bolt and connects by internal oil passages successively, sheet hoists, oblique plate, accessory sheet and oil return sheet constitute, be equipped with the P1 hydraulic fluid port that connects first oil pump on the described oil-feed sheet, the P2 hydraulic fluid port that connects second oil pump, the CF hydraulic fluid port and the LS hydraulic fluid port that connect the fork truck commutator respectively, connect the EF hydraulic fluid port of work system and the T hydraulic fluid port that is connected with oil sump tank, be equipped with pressure-gradient control valve in the described oil-feed sheet, system master's relief valve, turn to relief valve, unloading valve, solenoid valve and interflow one-way valve, described pressure-gradient control valve, turn to relief valve to be connected described interflow one-way valve successively by oil circuit with system master's relief valve, unloading valve is connected by another oil circuit with solenoid valve.
Described a kind of multifunction fork truck multiple directional control valve is characterized in that described solenoid valve is connected with oil-feed sheet plug-in mounting.
Above-mentioned a kind of multifunction fork truck multiple directional control valve, comprise by the oil-feed sheet that is connected and fixed by high-strength bolt and connects by internal oil passages successively, sheet hoists, oblique plate, the valve body that accessory sheet and oil return sheet constitute, be equipped with the P1 hydraulic fluid port that connects first oil pump on the described oil-feed sheet, the P2 hydraulic fluid port that connects second oil pump, the CF hydraulic fluid port and the LS hydraulic fluid port that connect the fork truck commutator respectively, the T hydraulic fluid port that is arranged at the inner EF hydraulic fluid port of oil-feed sheet and is connected that connects work system with oil sump tank, be equipped with pressure-gradient control valve in the described oil-feed sheet, system master's relief valve, turn to relief valve, unloading valve, solenoid valve and interflow one-way valve, described pressure-gradient control valve, turn to relief valve to be connected by oil circuit successively with system master's relief valve, described interflow one-way valve, unloading valve is connected by another oil circuit with solenoid valve, and two road binders can unite two into one by the interflow one-way valve.The utility model is by substituting the monostable diverter valve of legacy system with pressure-gradient control valve, when being implemented in fork truck load sensing steering system and not working, steering flow is collaborated to work system, satisfy the requirement that the door frame rate of climb improves, what reach POF makes full use of and realizes purpose of energy saving; With plug-in type electromagnetic valve unloading valve, realize single pump of telecontrol or double pump work, play energy-saving effect well; Be provided with one-way valve in the middle of two road binders, avoid the two-way oil phase to interfere mutually.
Description of drawings
Fig. 1 is the main TV structure schematic representation of the utility model multi-way valve;
Fig. 2 is the left TV structure schematic representation of the utility model multi-way valve;
Fig. 3 is the B-B face sectional view of Fig. 1;
Fig. 4 is an A-A place enlarged view sectional view among Fig. 3.
Among the figure: 1-oil-feed sheet, the 2-sheet that hoists, the 3-oblique plate, 4-accessory sheet, 5-oil return sheet, the master of 6-system relief valve, 7-turns to relief valve, the 8-pressure-gradient control valve, the 9-unloading valve, the 10-solenoid valve, 11-collaborates one-way valve.
Embodiment
Below in conjunction with Figure of description and embodiment the utility model is further described:
Shown in Fig. 1-4, a kind of multifunction fork truck multiple directional control valve, comprise valve body, described valve body is by the oil-feed sheet 1 that is connected and fixed by high-strength bolt and connects by internal oil passages successively, sheet 2 hoists, oblique plate 3, accessory sheet 4 and oil return sheet 5 constitute, be equipped with the P1 hydraulic fluid port that connects first oil pump on the described oil-feed sheet 1, the P2 hydraulic fluid port that connects second oil pump, the CF hydraulic fluid port and the LS hydraulic fluid port that connect the fork truck commutator respectively, connect the EF hydraulic fluid port that is arranged on oil-feed sheet 1 inside of work system and the T hydraulic fluid port that is connected with oil sump tank, be equipped with pressure-gradient control valve 8 in the described oil-feed sheet 1, system master's relief valve 6, turn to relief valve 7, unloading valve 9, solenoid valve 10 and interflow one-way valve 11, described pressure-gradient control valve 8, the oil circuit that turns to relief valve 7 and the master of system relief valve 6 to come in by the P1 hydraulic fluid port successively is connected, described interflow one-way valve 11, unloading valve 9 is connected with the oil circuit that solenoid valve 10 is come in by the P2 hydraulic fluid port, and two road binders can unite two into one by the interflow one-way valve.
Multifunction fork truck multiple directional control valve described in the utility model is by the duplex pump fuel feeding, the P1 hydraulic fluid port connects first oil pump, the P2 hydraulic fluid port connects second oil pump, the P1 hydraulic fluid port pressure oil of entering wherein, come out preferentially to be diverted to the commutator of fork truck earlier from the CF hydraulic fluid port through pressure-gradient control valve 8 parts, satisfy the requirement that turns to of fork truck, the pressure of commutator meanwhile feeds back to pressure-gradient control valve by the LS mouth, thereby makes the priority spool move left and right control CF hydraulic fluid port openings of sizes; The unnecessary oil of another part flows into inner EF hydraulic fluid port in work system through pressure-gradient control valve 8.When turning to when not working, by the pressure feedback of commutator LS hydraulic fluid port, originally went the oil of switching valve (being the CF hydraulic fluid port) also all to supply with work system this moment, this moment, system capacity was fully utilized.The pressure oil that the P2 hydraulic fluid port is entered is opened interflow one-way valve 11 and is arrived the EF hydraulic fluid port, reaches the fluid interflow of entering with the P1 hydraulic fluid port, and the total fluid behind the interflow supplies work system work by the EF hydraulic fluid port.Be built-in with unloading valve 9 and solenoid valve 10 is controlled the off-load of P2 hydraulic fluid port oil pump at multi-way valve oil-feed sheet, when system only needs single pump work, only need this moment solenoid valve 10 is opened, the pressure oil in unloading valve 9 medi-spring chambeies is by solenoid valve 10 oil sump tanks, unloading valve is opened rapidly under the effect of P2 hydraulic fluid port fluid for 9 this moments, thereby reach the purpose of the direct off-load of oil of P2 hydraulic fluid port, reduce the energy loss of system.Also be built-in with the master of system relief valve 6 at the oil-feed sheet, work system is carried out overload protection; On pressure-gradient control valve 8, also be connected to and turn to relief valve 7; when the commutator overpressure, this pressure passes to by the LS hydraulic fluid port and turns to relief valve 7, when pressure surpasses the value that turns to relief valve 7 settings; turn to relief valve 7 to open off-load rapidly, thus the safety of protection steering system.
This practicality has following beneficial effect: the monostable flow divider that 1, substitutes legacy system with pressure-gradient control valve, when being implemented in the fork truck Load Sensing Steering Hydraulic System and not working, steering flow is collaborated to work system, satisfy the requirement that the door frame rate of climb improves when reaching same speed (or suitably reduce pump delivery), what reach POF takes full advantage of and realizes energy-conservation purpose; 2, with plug-in solenoid control unloader, realize the single pump of Long-distance Control or double pump work, play well energy-saving effect; 3, be provided with check valve in the middle of two road binders, avoid the two-way oil phase to interfere mutually.
Claims (2)
1. multifunction fork truck multiple directional control valve, comprise valve body, described valve body is by the oil-feed sheet (1) that is connected and fixed by high-strength bolt and connects by internal oil passages successively, sheet (2) hoists, oblique plate (3), accessory sheet (4) and oil return sheet (5) constitute, it is characterized in that being equipped with on the described oil-feed sheet (1) the P1 hydraulic fluid port that connects first oil pump, the P2 hydraulic fluid port that connects second oil pump, the CF hydraulic fluid port and the LS hydraulic fluid port that connect the fork truck commutator respectively, connect the EF hydraulic fluid port of work system and the T hydraulic fluid port that is connected with oil sump tank, be equipped with pressure-gradient control valve (8) in the described oil-feed sheet (1), system master's relief valve (6), turn to relief valve (7), unloading valve (9), solenoid valve (10) and interflow one-way valve (11), described pressure-gradient control valve (8), turn to relief valve (7) to be connected described interflow one-way valve (11) successively by oil circuit with the master of system relief valve (6), unloading valve (9) is connected by another oil circuit with solenoid valve (10).
2. a kind of multifunction fork truck multiple directional control valve according to claim 1 is characterized in that described solenoid valve (10) is connected with oil-feed sheet (1) plug-in mounting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206533755U CN201902384U (en) | 2010-12-11 | 2010-12-11 | Multi-way reversing valve of multifunctional fork truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206533755U CN201902384U (en) | 2010-12-11 | 2010-12-11 | Multi-way reversing valve of multifunctional fork truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201902384U true CN201902384U (en) | 2011-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206533755U Expired - Lifetime CN201902384U (en) | 2010-12-11 | 2010-12-11 | Multi-way reversing valve of multifunctional fork truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201902384U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102242745A (en) * | 2011-07-29 | 2011-11-16 | 竺浩君 | Highly integrated proportion flow distribution valve |
| CN102678650A (en) * | 2012-06-12 | 2012-09-19 | 浙江海宏液压科技股份有限公司 | Double-pump converging oil-filling valve |
| CN102674210A (en) * | 2012-05-14 | 2012-09-19 | 浙江海宏液压科技股份有限公司 | Lift converging multiway valve |
| CN104197046A (en) * | 2014-09-11 | 2014-12-10 | 宁波市博尔法液压有限公司 | Multi-way valve with unloading protection function |
| CN105864137A (en) * | 2016-06-17 | 2016-08-17 | 合肥长源液压股份有限公司 | Integral type priority multiway valve |
| CN108488125A (en) * | 2018-03-21 | 2018-09-04 | 洛阳世英机械制造有限公司 | A kind of multifunction electric torch rotates integrally formula control valve |
-
2010
- 2010-12-11 CN CN2010206533755U patent/CN201902384U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102242745A (en) * | 2011-07-29 | 2011-11-16 | 竺浩君 | Highly integrated proportion flow distribution valve |
| CN102242745B (en) * | 2011-07-29 | 2014-04-30 | 宁波市博尔法液压有限公司 | Highly integrated proportion flow distribution valve |
| CN102674210A (en) * | 2012-05-14 | 2012-09-19 | 浙江海宏液压科技股份有限公司 | Lift converging multiway valve |
| CN102674210B (en) * | 2012-05-14 | 2014-11-05 | 浙江海宏液压科技股份有限公司 | Lift converging multiway valve |
| CN102678650A (en) * | 2012-06-12 | 2012-09-19 | 浙江海宏液压科技股份有限公司 | Double-pump converging oil-filling valve |
| CN102678650B (en) * | 2012-06-12 | 2014-12-17 | 浙江海宏液压科技股份有限公司 | Double-pump converging oil-filling valve |
| CN104197046A (en) * | 2014-09-11 | 2014-12-10 | 宁波市博尔法液压有限公司 | Multi-way valve with unloading protection function |
| CN104197046B (en) * | 2014-09-11 | 2016-10-05 | 宁波市博尔法液压有限公司 | A kind of banked direction control valves of band off-load protection |
| CN105864137A (en) * | 2016-06-17 | 2016-08-17 | 合肥长源液压股份有限公司 | Integral type priority multiway valve |
| CN108488125A (en) * | 2018-03-21 | 2018-09-04 | 洛阳世英机械制造有限公司 | A kind of multifunction electric torch rotates integrally formula control valve |
| CN108488125B (en) * | 2018-03-21 | 2019-12-17 | 洛阳世英机械制造有限公司 | Integrative rotation type control valve of multi-functional flashlight |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110720 |