CN205260466U - Fork sword action hydraulic system and fork truck - Google Patents
Fork sword action hydraulic system and fork truck Download PDFInfo
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- CN205260466U CN205260466U CN201521039195.7U CN201521039195U CN205260466U CN 205260466 U CN205260466 U CN 205260466U CN 201521039195 U CN201521039195 U CN 201521039195U CN 205260466 U CN205260466 U CN 205260466U
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Abstract
The utility model provides a fork sword action hydraulic system, including oil pump, first removal hydro -cylinder and second removal hydro -cylinder, move valves A, move valves A and include: first switching -over valve, third switching -over valve, second switching -over valve, first removal hydro -cylinder have pole chamber hydraulic fluid port with the pole chamber hydraulic fluid port that has that the second removed the hydro -cylinder links to each other. The utility model also provides a fork truck. The utility model provides a fork sword action hydraulic system realizes the maximum action of fork sword with minimum solenoid valve, minimum pipeline, reduces product cost, enhances product performance, is the utility model discloses the problem that will solve.
Description
Technical field
The utility model relates to engineering machinery field, more specifically, relates to a kind of fork cutter action hydraulic systemAnd fork truck.
Background technology
At present, the single action of forklift door frame fork cutter, the total left fork cutter of interlock move to right, left fork cutter moves to left, right fork cutterMove to right, right fork cutter moves to left, moves in opposite directions, moves on the contrary, moves to right simultaneously and move to left eight simultaneously and move, normalThereby rule fork cutter mobile system is to drive cylinder action reality by more than three magnetic valve, more than three oil pipeAbove eight actions of existing two fork cuttves, as shown in Figure 1, need to adopt three three position four-way electromagnetic valvesAnd a 2/2-way magnetic valve formation fork cutter mobile system, cost is higher.
Therefore, provide a kind of fork cutter action hydraulic system, realize and pitching with minimum magnetic valve, minimum pipelineMultiple actions of cutter, reduce product cost, enhance product performance, and be problem to be solved in the utility model.
Utility model content
Technical problem to be solved in the utility model is, a kind of fork cutter action hydraulic system is provided, and usesFew magnetic valve, minimum pipeline are realized multiple actions of fork cutter, reduce product cost, enhance product performance.
In view of this, the utility model provides a kind of fork cutter action hydraulic system, comprises oil pump 1, firstShift cylinder 4 and the second Shift cylinder 5, movement of valve group A, described movement of valve group A comprises: the first commutationValve 2, described the first reversal valve 2 is positioned at described oil pump 1 and described the first Shift cylinder 4 and described second movesBetween moving oil cylinder 5, move for the rodless cavity fuel feeding to described the first Shift cylinder 4 or to described firstThe rod chamber fuel feeding of oil cylinder 4 and described the second Shift cylinder 5; The 3rd reversal valve 6, described the 3rd reversal valve6 between described oil pump 1 and described the first Shift cylinder 4 and described the second Shift cylinder 5, for toThe rodless cavity fuel feeding of described the second Shift cylinder 5 or to the rodless cavity fuel feeding of described the first Shift cylinder 4 orPerson is to the rod chamber fuel feeding of described the first Shift cylinder 4 and described the second Shift cylinder 5; The second reversal valve 3,Described the second reversal valve 3 comprises three hydraulic fluid ports: P1 mouth, Y mouth and W mouth, described P1 mouth and describedThe M mouth of three reversal valves 6 connects, and described Y mouth is connected with the rod chamber of described the first Shift cylinder 4, instituteStating W mouth is connected with the rodless cavity hydraulic fluid port of described the first Shift cylinder 4; Having of described the first Shift cylinder 4Bar chamber hydraulic fluid port is connected with the rod chamber hydraulic fluid port of described the second Shift cylinder 5.
Preferably, described the first reversal valve 2 and described the 3rd reversal valve 6 are identical magnetic valve.
Preferably, described the first reversal valve 2 and the equal three position four-way electromagnetic valve of described the 3rd reversal valve 6.
Preferably, described the second reversal valve 3 is two-bit triplet magnetic valve.
Preferably, the oil-out of described oil pump 1 is also provided with the first overflow valve 7 of oil return case in parallel, described inThe oil-in of the first overflow valve 7 is connected with the oil-out of described oil pump 1, described the first overflow valve 7 fuel-displacedMouth connected tank.
Preferably, also comprise synchronous diffluence motor 8, one end of described synchronous diffluence motor 8 and the second commutationThe W mouth of valve 3 is connected, the other end respectively with described the first Shift cylinder 4 and described the second Shift cylinder 5Rod chamber.
Preferably, also comprise the second overflow valve 11, the oil-in of described the second overflow valve 11 and described firstThe rod chamber hydraulic fluid port of Shift cylinder 4 and described the second Shift cylinder 5 connects, described the second overflow valve 11Oil recirculating port connecting tank.
Preferably, also comprise the 3rd overflow valve 12 and the 4th overflow valve 13: described the 3rd overflow valve 12Oil-in connects the rodless cavity hydraulic fluid port of described the first Shift cylinder 4, and the oil-in of described the 4th overflow valve 13 connectsThe rodless cavity hydraulic fluid port of described the second Shift cylinder 5, described the 3rd overflow valve 12 and described the 4th overflow valve 13All connected tanks of oil return opening.
The utility model also provides a kind of fork truck, comprises the fork cutter action hydraulic pressure described in above-mentioned arbitrary technical schemeSystem.
Fork cutter that the utility model provides action hydraulic system, with minimum magnetic valve, minimum pipeline realizationMultiple actions of fork cutter, reduce product cost, enhance product performance.
Brief description of the drawings
Fig. 1 is a kind of structural representation of pitching cutter action hydraulic system in prior art;
Fig. 2 is that the utility model provides fork cutter action hydraulic pressure system to unify the hydraulic schematic diagram of embodiment;
Fig. 3 is the hydraulic schematic diagram that the utility model provides the another embodiment of fork cutter action hydraulic system;
Fig. 4 is the hydraulic schematic diagram that the utility model provides fork cutter action hydraulic system the 3rd embodiment.
Wherein, in Fig. 2 to 4, the corresponding relation between Reference numeral and component names is:
1 oil pump, 2 first reversal valves, 3 second reversal valves, 4 first Shift cylinders 4,5 second moveOil cylinder 5,6 the 3rd reversal valve, 7 first overflow valves, 8 synchronous diffluence motors, 11 second overflow valves,12 the 3rd overflow valves, 13 the 4th overflow valves.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described further. It should be noted that, notIn the situation of conflict, the feature in the application's embodiment and embodiment can combine mutually.
Set forth in the following description a lot of details so that fully understand the utility model, still,The utility model can also adopt and be different from other modes described here and implement, therefore, and the utility modelProtection domain be not subject to the restriction of following public specific embodiment.
Fig. 3 shows the structural representation that fork cutter action hydraulic pressure system provided by the utility model is unified embodimentFigure, as shown in Figures 3 and 4, the utility model provides a kind of fork cutter action hydraulic system, comprises oil pump1, the first Shift cylinder 4 and the second Shift cylinder 5, movement of valve group A, described movement of valve group A comprises:The first reversal valve 2, described the first reversal valve 2 is positioned at described oil pump 1 and described the first Shift cylinder 4 and instituteState between the second Shift cylinder 5, for the rodless cavity fuel feeding to described the first Shift cylinder 4 or to describedThe rod chamber fuel feeding of the first Shift cylinder 4 and described the second Shift cylinder 5; The 3rd reversal valve 6, describedThree reversal valves 6 between described oil pump 1 and described the first Shift cylinder 4 and described the second Shift cylinder 5,For to the rodless cavity fuel feeding of described the second Shift cylinder 5 or to the rodless cavity of described the first Shift cylinder 4Fuel feeding or to the rod chamber fuel feeding of described the first Shift cylinder 4 and described the second Shift cylinder 5; Second changesTo valve 3, described the second reversal valve 3 comprises three hydraulic fluid ports: P1 mouth, Y mouth and W mouth, described P1 mouth withThe M mouth of described the 3rd reversal valve 6 connects, and the rod chamber of described Y mouth and described the first Shift cylinder 4 connectsConnect, described W mouth is connected with the rodless cavity hydraulic fluid port of described the first Shift cylinder 4; Described the first Shift cylinder4 rod chamber hydraulic fluid port is connected with the rod chamber hydraulic fluid port of described the second Shift cylinder 5.
As shown in following table, the operation principle of the technical scheme that this embodiment provides is:
Illustrate: it is electric that "+" in form represents that corresponding electromagnet obtains; S1 and S2 are 6 liang of the 3rd reversal valvesThe electromagnet of end, S3 and S4 be the electromagnet at the first reversal valve 2 two ends, S5 is the second reversal valve 3Electromagnet; The piston rod external part of the first Shift cylinder 4 connects right fork cutter, drives right fork cutter to move left and right;The piston rod external part of the second Shift cylinder 5 connects left fork cutter, drives left fork cutter to move left and right.
1) left fork cutter moves to left: when S1, S5 simultaneously when electric, hydraulic oil from oil pump 1 through the 3rd reversal valve6 enter the rodless cavity of the second Shift cylinder 5, and the hydraulic oil of the second Shift cylinder 5 rod chambers is through the second commutationThe Y mouth oil return case of valve 3, the 3rd reversal valve 6, the second Shift cylinder 5 piston rods stretch out, and realize left fork cutterMove to left;
2) left fork cutter moves to right: when S2, S5 simultaneously when electric, hydraulic oil from oil pump 1 through the 3rd reversal valve6 enter the rod chamber of the second Shift cylinder 5 again through the second reversal valve 3, the second Shift cylinder 5 rodless cavitiesHydraulic oil is through the Y mouth oil return of the 3rd reversal valve 6 to fuel tank, and the second Shift cylinder 5 piston rods are retracted, realExisting left fork cutter moves to right;
3) right fork cutter moves to left: when S3 obtains when electric, hydraulic oil enters from oil pump 1 through the first reversal valve 2The rod chamber of one Shift cylinder 4, the hydraulic oil of the first Shift cylinder 4 rodless cavities is through the first reversal valve 2 oil returnsTo fuel tank, the first Shift cylinder 4 piston rods are retracted, and realize right fork cutter and move to left;
4) right fork cutter moves to right: when S4 obtains when electric, hydraulic oil moves from entering first through the first reversal valve 2The rodless cavity of oil cylinder 4, the first Shift cylinder 4 rod chamber hydraulic oil through the first reversal valve 2 oil returns to fuel tank,The first Shift cylinder 4 piston rods stretch out, and realize right fork cutter and move to right;
5) counter motion: when S1, S4, S5 simultaneously when electric, hydraulic oil from oil pump 1 through the first commutationValve 2, the 3rd reversal valve 6 enter respectively the rodless cavity of the first Shift cylinder 4, the nothing of the second Shift cylinder 5Bar chamber, the hydraulic oil of the second Shift cylinder 5 rod chambers passes through the second reversal valve 3 again through the 3rd reversal valve 6Oil return, the hydraulic oil of the first Shift cylinder 4 rod chambers both can pass through the first reversal valve 2 oil returns, can pass through againThe second reversal valve 3 again through the 3rd reversal valve 6 oil returns to fuel tank, the first Shift cylinder 4 and the second Shift cylinder5 piston rod all stretches out, and realizes the counter motion of left and right fork cutter;
6) move toward one another: when S2, S3, S5 simultaneously when electric, hydraulic oil is from out rear portion of oil pump 1Enter the rod chamber of the first Shift cylinder 4 through the first reversal valve 2, a part is through the 3rd reversal valve 6Enter the rod chamber of the second Shift cylinder 5 with the second reversal valve 3; The hydraulic pressure of the second Shift cylinder 5 rodless cavitiesOil gets final product oil return to fuel tank by the 3rd reversal valve 6, and the hydraulic oil of the first Shift cylinder 4 rodless cavities both can lead toCross the first reversal valve 2 oil returns, again can by the second reversal valve 3 again through the 3rd reversal valve 6 oil returns to fuel tank,The piston rod of the first Shift cylinder 4 and the second Shift cylinder 5 is all retracted, and realizes the move toward one another of left and right fork cutter;
7) fork cutter in left and right moves to left simultaneously: when S1 obtains when electric, hydraulic oil enters second through the 3rd reversal valve 6The rodless cavity of Shift cylinder 5, the piston rod that promotes the second Shift cylinder 5 stretches out; The second Shift cylinder 5The hydraulic oil of rod chamber, due to cannot oil return, enters the rod chamber of the first Shift cylinder 4, thereby promotes firstThe rodless cavity hydraulic oil of Shift cylinder 4 passes through the W mouth of the second reversal valve 3 again through the 3rd reversal valve 6 oil returnsTo fuel tank, the piston rod of the first Shift cylinder 4 is retracted, and realizes left and right fork cutter and moves to left simultaneously;
8) fork cutter in left and right moves to right simultaneously: when S2 obtains when electric, hydraulic oil by the 3rd reversal valve 6 again through secondThe W mouth of reversal valve 3 enters the rodless cavity of the first Shift cylinder 4, promotes the piston of the first Shift cylinder 4Bar stretches out; The first Shift cylinder 4 rod chamber hydraulic oil, due to cannot oil return, enter the second Shift cylinder 5Rod chamber, thereby promote the rodless cavity fluid of the second Shift cylinder 5 through the 3rd reversal valve 6 oil returns, secondThe piston rod of Shift cylinder 5 is retracted, and realizes left and right fork cutter and moves to right simultaneously.
In this technical scheme, by two three position four-way electromagnetic valves (the first reversal valve and the 3rd reversal valve) withThe movement of valve group A that a two-bit triplet magnetic valve (the second reversal valve) is integrated, only needs three oil pipes: firstBetween Shift cylinder rodless cavity, the second Shift cylinder rodless cavity and movement of valve group A each one, second movesBetween cylinder rod chamber and the first Shift cylinder rod chamber one, realize and made two fork cuttves realize left fork cutterMove to right, left fork cutter moves to left, right fork cutter moves to right, right fork cutter moves to left, move in opposite directions, move on the contrary, simultaneously rightMove and the function of eight actions that simultaneously move to left. Fork cutter action hydraulic system provided by the utility model, usesFew magnetic valve, minimum pipeline have been realized eight actions of fork cutter, reduce product cost, improve productEnergy.
As shown in Figure 3, in above-described embodiment, as the preferred technical scheme of one, described fork cutter actionHydraulic system also comprises synchronous diffluence motor 8, one end of described synchronous diffluence motor 8 and the second reversal valve 3W mouth be connected, the other end respectively with the having of described the first Shift cylinder 4 and described the second Shift cylinder 5Bar chamber.
In this embodiment, synchronous diffluence motor is by controlling the identical or oil return of the oil-feed flow of two cylinder rod chambersFlow is identical, reaches the object of oil cylinder synchronization action, further improves the performance of product.
As shown in Figure 4, as the preferred technical scheme of one, described fork cutter action hydraulic system also comprisesThe second overflow valve 11, the oil-in of described the second overflow valve 11 and described the first Shift cylinder 4 and describedThe rod chamber hydraulic fluid port of two Shift cylinders 5 connects, the oil recirculating port connecting tank of described the second overflow valve 11.
An overflow valve is set on the rod chamber oil circuit of two oil cylinders and carrys out limiting pressure, can promote hydraulic pressure systemSystem security, reduction energy consumption, and be communicated with and use an overflow valve at two rod chamber oil circuits, minimum to increaseOne-tenth originally obtained the lifting of more products performance, the further cost performance of improving product.
Preferably, also comprise the 3rd overflow valve 12 and the 4th overflow valve 13: described the 3rd overflow valve 12Oil-in connects the rodless cavity hydraulic fluid port of described the first Shift cylinder 4, and the oil-in of described the 4th overflow valve 13 connectsThe rodless cavity hydraulic fluid port of described the second Shift cylinder 5, described the 3rd overflow valve 12 and described the 4th overflow valve 13All connected tanks of oil return opening. Preferably, the oil-out of described oil pump 1 is also provided with first of oil return case in parallelOverflow valve 7, the oil-in of described the first overflow valve 7 is connected with the oil-out of described oil pump 1, and described firstThe oil-out connected tank of overflow valve 7.
In this embodiment, for the further performance of improving product, on the rodless cavity oil circuit of two oil cylinders alsoBe provided with respectively overflow valve.
In above-described embodiment, as the preferred technical scheme of one, described the first reversal valve 2 and the described the 3rdReversal valve 6 is identical magnetic valve, described the first reversal valve 2 and the equal 3-position 4-way of described the 3rd reversal valve 6Magnetic valve, described the second reversal valve 3 is two-bit triplet magnetic valve.
The utility model also provides a kind of fork truck, comprises the fork cutter action hydraulic pressure described in above-mentioned arbitrary technical schemeSystem.
Fork cutter that the utility model provides action hydraulic system, with minimum magnetic valve, minimum pipeline realizationEight actions of fork cutter, reduce product cost, enhance product performance.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model,For a person skilled in the art, the utility model can have various modifications and variations. All in this practicalityWithin novel spirit and principle, any amendment of doing, be equal to replacement, improvement etc., all should be included in thisWithin the protection domain of utility model.
Claims (9)
1. a fork cutter action hydraulic system, comprises oil pump (1), the first Shift cylinder (4) and secondShift cylinder (5), movement of valve group A, the rod chamber of described the first oil cylinder (4) and described the second oil cylinder (5)Rod chamber connect it is characterized in that, described movement of valve group A comprises:
The first reversal valve (2), described the first reversal valve (2) is positioned at described oil pump (1) and described first and movesBetween moving oil cylinder (4) and described the second Shift cylinder (5), for to described the first Shift cylinder (4)Rodless cavity fuel feeding or to the bar that has of described the first Shift cylinder (4) and described the second Shift cylinder (5)Chamber fuel feeding;
The 3rd reversal valve (6), described the 3rd reversal valve (6) is positioned at described oil pump (1) and described first and movesBetween moving oil cylinder (4) and described the second Shift cylinder (5), for to described the second Shift cylinder (5)Rodless cavity fuel feeding or move to the rodless cavity fuel feeding of described the first Shift cylinder (4) or to described firstThe rod chamber fuel feeding of moving oil cylinder (4) and described the second Shift cylinder (5);
The second reversal valve (3), described the second reversal valve (3) comprises three hydraulic fluid ports: P1 mouth, Y mouth and WMouthful, described P1 mouth is connected with the actuator port M of described the 3rd reversal valve (6), described Y mouth and described inThe rod chamber of the first Shift cylinder (4) connects, the nothing of described W mouth and described the first Shift cylinder (4)Bar chamber hydraulic fluid port connects;
The rod chamber of the rod chamber hydraulic fluid port of described the first Shift cylinder (4) and described the second Shift cylinder (5)Hydraulic fluid port is connected.
2. fork cutter action hydraulic system according to claim 1, is characterized in that described firstReversal valve (2) and described the 3rd reversal valve (6) are identical magnetic valve.
3. fork cutter action hydraulic system according to claim 2, is characterized in that described firstReversal valve (2) and described the 3rd reversal valve (6) be three position four-way electromagnetic valve all.
4. fork cutter action hydraulic system according to claim 1, is characterized in that described secondReversal valve (3) is two-bit triplet magnetic valve.
5. fork cutter action hydraulic system according to claim 1, is characterized in that described oil pump(1) oil-out is also provided with first overflow valve (7) of oil return case in parallel, described the first overflow valve (7)Oil-in be connected with the oil-out of described oil pump (1), the oil-out of described the first overflow valve (7) connects oilCase.
6. fork cutter action hydraulic system according to claim 1, is characterized in that, also comprises sameStep diffluence motor (8), the W mouth of one end of described synchronous diffluence motor (8) and the second reversal valve (3)Be connected, the other end respectively with the bar that has of described the first Shift cylinder (4) and described the second Shift cylinder (5)Chamber.
7. fork cutter according to claim 1 action hydraulic system, is characterized in that, also comprises theTwo overflow valves (11), the oil-in of described the second overflow valve (11) and described the first Shift cylinder (4) andThe rod chamber hydraulic fluid port of described the second Shift cylinder (5) connects, the oil return opening of described the second overflow valve (11)Connected tank.
8. fork cutter according to claim 7 action hydraulic system, is characterized in that, also comprises theThree overflow valves (12) and the 4th overflow valve (13): described in the oil-in of described the 3rd overflow valve (12) connectsThe rodless cavity hydraulic fluid port of the first Shift cylinder (4), the oil-in of described the 4th overflow valve (13) connects describedThe rodless cavity hydraulic fluid port of two Shift cylinders (5), described the 3rd overflow valve (12) and described the 4th overflow valve (13)All connected tanks of oil return opening.
9. a fork truck, is characterized in that, comprises as claimed in any of claims 1 to 8 in one of claimsFork cutter action hydraulic system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521039195.7U CN205260466U (en) | 2015-12-15 | 2015-12-15 | Fork sword action hydraulic system and fork truck |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521039195.7U CN205260466U (en) | 2015-12-15 | 2015-12-15 | Fork sword action hydraulic system and fork truck |
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| Publication Number | Publication Date |
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| CN205260466U true CN205260466U (en) | 2016-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201521039195.7U Active CN205260466U (en) | 2015-12-15 | 2015-12-15 | Fork sword action hydraulic system and fork truck |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107906066A (en) * | 2017-11-14 | 2018-04-13 | 浙江大学宁波理工学院 | Rush case and make ripple hydraulic system |
| CN114955942A (en) * | 2022-05-31 | 2022-08-30 | 杭叉集团股份有限公司 | Fork spacing adjusting hydraulic system for forklift |
-
2015
- 2015-12-15 CN CN201521039195.7U patent/CN205260466U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107906066A (en) * | 2017-11-14 | 2018-04-13 | 浙江大学宁波理工学院 | Rush case and make ripple hydraulic system |
| CN107906066B (en) * | 2017-11-14 | 2019-05-28 | 浙江大学宁波理工学院 | It rushes case and makes wave hydraulic system |
| CN114955942A (en) * | 2022-05-31 | 2022-08-30 | 杭叉集团股份有限公司 | Fork spacing adjusting hydraulic system for forklift |
| CN114955942B (en) * | 2022-05-31 | 2023-07-18 | 杭叉集团股份有限公司 | Fork space adjustment hydraulic system for forklift |
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