CN203962527U - A kind of hydraulic system of fork lift truck suspender - Google Patents
A kind of hydraulic system of fork lift truck suspender Download PDFInfo
- Publication number
- CN203962527U CN203962527U CN201420373668.6U CN201420373668U CN203962527U CN 203962527 U CN203962527 U CN 203962527U CN 201420373668 U CN201420373668 U CN 201420373668U CN 203962527 U CN203962527 U CN 203962527U
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- valve
- oil
- lock
- hydraulic
- sidesway
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Abstract
The utility model provides a kind of hydraulic system of fork lift truck suspender, the gear pump that comprises sidesway oil cylinder, revolves lock oil cylinder and be connected with hydraulic oil container, the oil outlet end of described gear pump is connected with the filler opening of leading type multiple directional control valve, guide's delivery valve piece respectively, and described guide's delivery valve piece is connected with accumulator; In described leading type multiple directional control valve, be provided with sidesway main valve plug and revolve lock main valve plug, described guide's delivery valve piece inside is provided with three solenoid valves in parallel; Oil hydraulic circuit by the control of sidesway main valve plug is all connected to form loop with rodless cavity and the rod chamber of sidesway oil cylinder respectively by series flow control valve; Be connected to form loop by electromagnetism integrated valve with revolving lock oil cylinder by the oil hydraulic circuit that revolves lock main valve plug control, described electromagnetism integrated valve is provided with hydraulic lock with revolving to lock between oil cylinder.The hydraulic fluid flow rate that flows through series flow control valve by control regulates the sidesway speed of suspender, makes to revolve lock oil cylinder can not move because of misoperation by hydraulic lock, ensures that suspender grabs the reliability of case.
Description
Technical field
The utility model relates to hydraulic system, is specifically related to a kind of hydraulic system of fork lift truck suspender.
Background technique
Empty container piling crane is the empty container heap case equipment of various harbours, goods station and container production enterprise indispensability, and its operating efficiency is high, work is frequent.The hydraulic system of existing empty container piling crane suspender is substantially all with suspender import, and it exists following problem: system is all used imported hydraulic element and makes the higher and complex structure of cost; Systemic-function is more unified, substantially all have sidesway, stretch and grab three functions of case, but the speed of sidesway is changeless, is unfavorable for that motion is controlled to suspender, has security risk; In addition, in existing hydraulic system, in the time of oil pump fuel cut-off, or selector valve is in the time of meta, the case oil cylinder of grabbing bearing a heavy burden is bearing the unfixed power of both direction, and the pressure oil in oil cylinder easily falls from selector valve clearance leakage, grabs case action and easily causes misoperation and cause potential safety hazard.
Model utility content
The utility model, in order to solve the problems of the technologies described above, provides a kind of hydraulic system of the low cost fork lift truck suspender of realizing the adjustment of suspender sidesway speed, hydraulic lock.
The technical solution of the utility model is: a kind of hydraulic system of fork lift truck suspender, the gear pump that comprises sidesway oil cylinder, revolves lock oil cylinder and be connected with hydraulic oil container, the oil outlet end of described gear pump is connected with the filler opening of leading type multiple directional control valve, guide's delivery valve piece respectively, and described guide's delivery valve piece is connected with accumulator; In described leading type multiple directional control valve, be provided with sidesway main valve plug and revolve lock main valve plug, described guide's delivery valve piece inside is provided with three solenoid valves in parallel, wherein the oil outlet end of the first solenoid valve, the second solenoid valve is connected with the two ends of described sidesway main valve plug respectively, the oil outlet end of the 3rd solenoid valve with described in revolve lock main valve plug and be connected, revolve and lock the other end of main valve plug and be connected with hydraulic oil container; Oil hydraulic circuit by the control of sidesway main valve plug is all connected to form loop with rodless cavity and the rod chamber of sidesway oil cylinder respectively by series flow control valve; Be connected to form loop with the rodless cavity and the rod chamber that revolve lock oil cylinder by the oil hydraulic circuit that revolves lock main valve plug control respectively by electromagnetism integrated valve, described electromagnetism integrated valve is provided with hydraulic lock with revolving to lock between oil cylinder.
Further, total oil circuit of described leading type multiple directional control valve is provided with relief valve; All establish secondary relief valve by sidesway main valve plug with revolving on the oil hydraulic circuit of lock main valve plug control.
Further, the oil inlet pipe of described guide's delivery valve piece is provided with reduction valve, and the oil outlet end of reduction valve is connected with the oil inlet end of the first solenoid valve, the second solenoid valve, the 3rd solenoid valve respectively.
Further, the oil revolving end of described leading type multiple directional control valve, guide's delivery valve piece is communicated with hydraulic oil container by filter respectively.
Further, described electromagnetism integrated valve comprises spool, between the oil inlet pipe of described spool and return tube, is connected with relief valve.
In the utility model, hydraulic lock is exactly the interlockings in parallel of two Pilot operated check valves, and when its working principle is an oil pocket forward oil-feed, rear reverse draining is opened in another chamber, and vice versa; In the time of two chamber not oil-feeds of forward, oppositely also obstructed, not disturbed by external load, Leakage prevention, the effect of playing pressurize and locking and revolving lock oil cylinder oil cylinder position.
Hydraulic system of the present utility model is stored in accumulator by the high pressure oil of the 18.5MPa of gear pump output after the reduction valve in guide's delivery valve piece reduces pressure 3.5MPa.In the time that system is not worked or do not need a large amount of hydraulic oil, the meta of each spool that unnecessary hydraulic oil can be in leading type multiple directional control valve directly flows back to hydraulic oil container; In the time that suspender need to do sidesway or grab case action, control sidesway main valve plug in leading type multiple directional control valve or revolve that lock main valve plug moves commutation and conducting sidesway oil cylinder or revolve the oil circuit of lock oil cylinder by controlling solenoid valve in guide delivery valve piece, thereby complete its relevant sidesway, grab case, put case action.
This product has advantages of following aspect compared with prior art products:
1, hydraulic system structure of the present utility model is simple, and cost is lower;
2, the hydraulic fluid flow rate that the sidesway speed of suspender can flow through series flow control valve by control regulates as required, has operability, and safe;
3, the utility model is at electromagnetism integrated valve and revolve lock and be provided with hydraulic lock between oil cylinder, in the time that the filler opening of hydraulic lock does not have high pressure oil, two Pilot operated check valves in it are in closed condition, the hydraulic oil revolving in lock oil cylinder cannot reflux, can make to revolve lock oil cylinder and can not move because of misoperation, ensure that suspender grabs the reliability of case.
4, the utility model adopts leading type multiple directional control valve and guide's delivery valve piece to control and enters sidesway oil cylinder and the hydraulic oil that revolves lock oil cylinder, thereby can realize telecontrol sidesway oil cylinder and the action of revolving lock oil cylinder.
5, the reduction valve of the high pressure oil of gear pump output in the guide's delivery valve piece 3.5MPa that reduces pressure controlled afterwards in leading type multiple directional control valve sidesway main valve plug and revolved lock main valve plug and move commutation and the relevant oil circuit of conducting, thereby had ensured sidesway main valve plug and the safe handling of revolving lock main valve plug.
6, control the sidesway main valve plug of leading type multiple directional control valve and revolve the movement of lock main valve plug and conducting sidesway oil cylinder or revolve the oil circuit of lock oil cylinder by controlling solenoid valve in guide delivery valve piece, thereby complete its relevant sidesway, grab case, put case action, there is controllability and Security.
Brief description of the drawings
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Fig. 1 is the utility model structural representation.
Fig. 2 is the structural representation of leading type multiple directional control valve.
Fig. 3 is the structural representation of hydraulic lock.
Fig. 4 is the structural representation of electromagnetism integrated valve.
Fig. 5 is the structural representation of guide's delivery valve piece.
In figure: 1-gear pump, 2-leading type multiple directional control valve, 2-1 sidesway main valve plug, 2-2 revolves lock main valve plug, 2-3 relief valve, No. bis-relief valves of 2-4; 3-series flow control valve, 4-sidesway oil cylinder, 5-revolves lock oil cylinder, 6-hydraulic lock, 6-1 the first Pilot operated check valve, 6-2 the second Pilot operated check valve; 7-electromagnetism integrated valve, 7-1 spool, 7-2 relief valve; 8-guide's delivery valve piece, 8-1 the first solenoid valve, 8-2 the second solenoid valve, 8-3 the 3rd solenoid valve, 8-4 reduction valve; 9-accumulator, 10-filter, 11-hydraulic oil container.
Embodiment
As shown in Figure 1, a kind of hydraulic system of fork lift truck suspender, the gear pump 1 that comprises sidesway oil cylinder 4, revolves lock oil cylinder 5 and be connected with hydraulic oil container 11, the oil outlet end of described gear pump 1 is connected with the filler opening of leading type multiple directional control valve 2, guide's delivery valve piece 8 respectively, and described guide's delivery valve piece 8 is connected with accumulator 9; As shown in Figure 2, be provided with sidesway main valve plug 2-1 and revolve lock main valve plug 2-2 in leading type multiple directional control valve 2, its total oil circuit is provided with relief valve 2-3; All establish secondary relief valve 2-4 by sidesway main valve plug 2-1 with revolving on the oil hydraulic circuit that lock main valve plug 2-2 controls; As shown in Figure 5, guide's delivery valve piece 8 inside are provided with three solenoid valves in parallel, and the oil inlet end of solenoid valve is all connected with reduction valve 8-4; Wherein the oil outlet end of the first solenoid valve 8-1, the second solenoid valve 8-2 is connected with the two ends of described sidesway main valve plug 2-1 respectively, the oil outlet end of the 3rd solenoid valve 8-3 with described in revolve lock main valve plug 2-2 and be connected, revolve the other end of locking main valve plug 2-2 and be connected with hydraulic oil container 11; The oil hydraulic circuit of being controlled by sidesway main valve plug 2-1 is all connected to form loop with rodless cavity and the rod chamber of sidesway oil cylinder 4 respectively by series flow control valve 3; By revolve oil hydraulic circuit that lock main valve plug 2-2 controls by electromagnetism integrated valve 7 with revolve lock oil cylinder 5(as shown in Figure 3) be connected to form loop, described electromagnetism integrated valve 7 is provided with hydraulic lock 6 with revolving to lock between oil cylinder 5.
Further, the oil revolving end of described leading type multiple directional control valve 2, guide's delivery valve piece 8 is communicated with hydraulic oil container 11 by filter 10 respectively.
Further, as shown in Figure 4, electromagnetism integrated valve 7 comprises spool 7-1, is connected with relief valve 7-2 between the oil inlet pipe of described spool 7-1 and return tube.
Working procedure of the present utility model is as follows:
After fork lift truck complete machine starts, in fuel tank 11, hydraulic oil is pressurized to after 18.5MPa through gear pump 1, give respectively leading type multiple directional control valve 2 and guide's delivery valve piece 8 fuel feeding, the hydraulic oil of supplying with guide's delivery valve piece 8 is depressured to 3.5MPa by hydraulic fluid pressure and is stored in accumulator 9 through its reduction valve 8-4.
In the time of car load attonity or when hydraulic system does not need a large amount of hydraulic oil, the meta of each spool that hydraulic oil can be in leading type multiple directional control valve 2 directly flows back to fuel tank.
In the time that suspender need to do sidesway action, open the first solenoid valve 8-1 or the second solenoid valve 8-2 in guide's delivery valve piece 8, in accumulator 9, hydraulic oil can be arrived by the a1 of guide's delivery valve piece 8 or a2 hydraulic fluid port guide's hydraulic fluid port V1 or the V2 of leading type multiple directional control valve 2, the sidesway main valve plug 2-1 of leading type multiple directional control valve 2 is moved and conducting oil circuit, the high pressure liquid force feed entering in leading type multiple directional control valve 2 is flowed out by its A1 or B1 hydraulic fluid port, enter into rod chamber or the rodless cavity of sidesway oil cylinder 4 through series flow control valve 3, make the piston rod of sidesway oil cylinder 4 shrink or stretch out, and then the sidesway of realizing suspender moves.
After suspender completes the location of cargo container, need to grab case time, open the 3rd solenoid valve 8-3 in guide's delivery valve piece 8, in accumulator 9, hydraulic oil can be arrived by its a3 hydraulic fluid port guide's hydraulic fluid port V4 of leading type multiple directional control valve 2, the lock main valve plug 2-2 that revolves of leading type multiple directional control valve 2 is moved and conducting oil circuit, the high pressure liquid force feed entering in leading type multiple directional control valve 2 is flowed out the P mouth that arrives electromagnetism integrated valve 7 by its B2 hydraulic fluid port, spool 7-1 in electromagnetism integrated valve 7 can be moved to the left simultaneously, high pressure oil first Pilot operated check valve 6-1 in hydraulic lock 6 flows out and arrives in the connected rodless cavity that revolves lock oil cylinder 5, high pressure oil is opened the second Pilot operated check valve 6-2 simultaneously, the second Pilot operated check valve 6-2 earial drainage through opening is out to revolve hydraulic oil in the rod chamber of lock oil cylinder 5, enter leading type multiple directional control valve 2 through electromagnetism integrated valve 7 and form loop, thereby the piston rod that revolves lock oil cylinder is stretched out, complete and grab case action,
In the time that goods arrival stowed location need to discharge shipping container, open the 3rd solenoid valve 8-3 of guide's delivery valve piece 8, in accumulator 9, hydraulic oil is arrived guide's hydraulic fluid port V4 of leading type multiple directional control valve 2 by its a3 mouth, the lock main valve plug 2-2 that revolves of leading type multiple directional control valve 2 is moved and conducting oil circuit, the high pressure oil entering in leading type multiple directional control valve 2 flows out the P mouth that arrives electromagnetism integrated valve 7 through its B2 hydraulic fluid port, spool 7-1 in electromagnetism integrated valve 7 can move right simultaneously, high pressure oil can flow out the connected rod chamber that revolves lock oil cylinder 5 of arrival by the second Pilot operated check valve 6-2 in hydraulic lock 6, high pressure oil is opened the first Pilot operated check valve 6-1 simultaneously, revolve the earial drainage formation loop of hydraulic oil in the rodless cavity of locking oil cylinder 5, revolve the piston rod withdrawal of lock oil cylinder and complete the release to shipping container.
And in the time that the filler opening of hydraulic lock 6 does not have high pressure oil to arrive, two Pilot operated check valve is all in closed condition, the hydraulic oil revolving in lock oil cylinder 5 cannot reflux, and can not move because of misoperation thereby make to revolve lock oil cylinder 5, ensures that suspender grabs the reliability of case.
Above embodiment is not limited only to protection domain of the present utility model, all modify based on basic thought of the present utility model or change all belong to protection domain of the present utility model.
Claims (5)
1. the hydraulic system of a fork lift truck suspender, the gear pump (1) that comprises sidesway oil cylinder (4), revolves lock oil cylinder (5) and be connected with hydraulic oil container (11), it is characterized in that: the oil outlet end of described gear pump (1) is connected with the filler opening of leading type multiple directional control valve (2), guide's delivery valve piece (8) respectively, and described guide's delivery valve piece (8) is connected with accumulator (9); In described leading type multiple directional control valve (2), be provided with sidesway main valve plug (2-1) and revolve lock main valve plug (2-2), described guide's delivery valve piece (8) inside is provided with three solenoid valves in parallel, wherein the oil outlet end of the first solenoid valve (8-1), the second solenoid valve (8-2) is connected with the two ends of described sidesway main valve plug (2-1) respectively, the oil outlet end of the 3rd solenoid valve (8-3) with described in revolve lock main valve plug (2-2) is connected, revolve lock main valve plug (2-2) the other end be connected with hydraulic oil container (11); The oil hydraulic circuit of being controlled by sidesway main valve plug (2-1) is all connected to form loop with rodless cavity and the rod chamber of sidesway oil cylinder (4) respectively by series flow control valve (3); Be connected to form loop with the rodless cavity and the rod chamber that revolve lock oil cylinder (5) by revolving the oil hydraulic circuit that lock main valve plug (2-2) controls respectively by electromagnetism integrated valve (7), described electromagnetism integrated valve (7) and revolve to lock between oil cylinder (5) and be provided with hydraulic lock (6).
2. the hydraulic system of a kind of fork lift truck suspender according to claim 1, is characterized in that: total oil circuit of described leading type multiple directional control valve (2) is provided with relief valve (2-3); By sidesway main valve plug (2-1) with revolve lock main valve plug (2-2) control oil hydraulic circuit on all establish secondary relief valve (2-4).
3. the hydraulic system of a kind of fork lift truck suspender according to claim 1, it is characterized in that: the oil inlet pipe of described guide's delivery valve piece (8) is provided with reduction valve (8-4), the oil outlet end of reduction valve (8-4) is connected with the oil inlet end of the first solenoid valve (8-1), the second solenoid valve (8-2), the 3rd solenoid valve (8-3) respectively.
4. the hydraulic system of a kind of fork lift truck suspender according to claim 1, is characterized in that: the oil revolving end of described leading type multiple directional control valve (2), guide's delivery valve piece (8) is communicated with hydraulic oil container (11) by filter (10) respectively.
5. the hydraulic system of a kind of fork lift truck suspender according to claim 1, is characterized in that: described electromagnetism integrated valve (7) comprises spool (7-1), is connected with relief valve (7-2) between the oil inlet pipe of described spool (7-1) and return tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420373668.6U CN203962527U (en) | 2014-07-08 | 2014-07-08 | A kind of hydraulic system of fork lift truck suspender |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420373668.6U CN203962527U (en) | 2014-07-08 | 2014-07-08 | A kind of hydraulic system of fork lift truck suspender |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203962527U true CN203962527U (en) | 2014-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420373668.6U Withdrawn - After Issue CN203962527U (en) | 2014-07-08 | 2014-07-08 | A kind of hydraulic system of fork lift truck suspender |
Country Status (1)
| Country | Link |
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| CN (1) | CN203962527U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088828A (en) * | 2014-07-08 | 2014-10-08 | 安徽合力股份有限公司 | Hydraulic system of hanger of stacking machine |
-
2014
- 2014-07-08 CN CN201420373668.6U patent/CN203962527U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088828A (en) * | 2014-07-08 | 2014-10-08 | 安徽合力股份有限公司 | Hydraulic system of hanger of stacking machine |
| CN104088828B (en) * | 2014-07-08 | 2016-03-23 | 安徽合力股份有限公司 | A kind of hydraulic system of fork lift truck suspender |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141126 Effective date of abandoning: 20160323 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |