CN203670338U - Sequence valve and corresponding hydraulic control circuit - Google Patents
Sequence valve and corresponding hydraulic control circuit Download PDFInfo
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- CN203670338U CN203670338U CN201420019671.8U CN201420019671U CN203670338U CN 203670338 U CN203670338 U CN 203670338U CN 201420019671 U CN201420019671 U CN 201420019671U CN 203670338 U CN203670338 U CN 203670338U
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- 239000000945 filler Substances 0.000 claims description 25
- 230000001737 promoting effect Effects 0.000 claims description 5
- 239000012530 fluid Substances 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 8
- 239000002828 fuel tank Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
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Abstract
The utility model discloses a sequence valve and corresponding hydraulic control return circuit, wherein, the sequence valve includes oil inlet, first work hydraulic fluid port, second work hydraulic fluid port, first ooff valve and second ooff valve. The first switch valve is arranged between the oil inlet and the first working oil port, and when the first switch valve is opened, the oil inlet is communicated with the first working oil port; the second switch valve is arranged between the oil inlet and the second working oil port, and when the second switch valve is opened, the oil inlet is communicated with the second working oil port. The utility model discloses an adopt the hydraulic control circuit of above-mentioned sequence valve can realize that the area of flexible hydro-cylinder carries is flexible.
Description
Technical field
The utility model relates to Hydraulic Field, particularly relates to a kind of sequence valve and corresponding hydraulic control circuit.
Background technique
In engineering machinery, sequence valve is a kind of hydraulic element that extensively adopt on engineering mechanical device, and its service behaviour tool for some hydraulic work mechanisms of betterment works machinery plays a very important role.At present, in engineering machinery field, a lot of engineering mechanical devices adopt telescopic oil cylinder, and the flexible operation of the arm of for example truck crane is to realize by the flexible operation of telescopic oil cylinder, but the band that telescopic oil cylinder all can not be realized in existing hydraulic system and loop carries flexible.
Model utility content
The technical problem that the utility model mainly solves is to provide a kind of sequence valve and corresponding hydraulic control circuit, and its band that can realize telescopic oil cylinder carries flexible.
For solving the problems of the technologies described above, the technological scheme that the utility model adopts is: a kind of sequence valve is provided, and wherein, described sequence valve comprises filler opening, the first actuator port, the second actuator port, the first switch valve and second switch valve.Described the first switch valve is arranged between described filler opening and described the first actuator port, and in the time that described the first switch valve is opened, described filler opening communicates with described the first actuator port; Described second switch valve is arranged between described filler opening and described the second actuator port, and in the time that described second switch valve is opened, described filler opening communicates with described the second actuator port.
Wherein, described the first switch valve comprises base, valve pocket, the first spool, pull bar, the first spring and the first screw plug.Described filler opening and described the first actuator port are arranged on described base, and in described base, offer main chamber and the first path, described main chamber communicates with described filler opening, described the first path communicates with described the first actuator port, described the first screw plug is arranged on the side that base is relative and seals described main chamber, described valve pocket and described the first spool are arranged in described main chamber, and described the first spool closes described the first path, the stub end conflict of described pull bar is the side near described valve pocket at described the first spool, and described first spring conflict at described the first spool the opposite side away from described valve pocket, in the time pulling described pull bar, described the first spool is correspondingly mobile makes described the first path communicate with described main chamber to expose described the first path, described the first switch valve unlatching, and the described filler opening communicating with described main chamber and described the first actuator port communicating with described the first path communicate.
Wherein, described the second actuator port is arranged on described base, and also offers alternate path and three-way in described base.Described alternate path communicates with the described main chamber of described base, described three-way communicates with described the second actuator port, and described alternate path is connected with described second switch valve respectively with described three-way, to realize being connected of described actuator port and described the second actuator port by described second switch valve.
Wherein, described second switch valve comprises valve body, swivel nut, the second screw plug, push rod, the second spool and the second spring.Described valve body is connected with described base, in described valve body, offer time chamber, four-way road and five-way road, described four-way road is connected with described chamber respectively with described five-way road, and described four-way road communicates with the described alternate path in described base, described five-way road communicates with the described three-way in described base; Described swivel nut is arranged on a side of described valve body, and described the second screw plug is arranged on the opposite side that described valve body is relative; Described the second spool is arranged in described chamber in described valve body and seals described five-way road, described push rod runs through described swivel nut and extends to described chamber and conflict in a side of described the second spool, within described the second spring is arranged on described the second screw plug and the opposite side of described the second spool of conflicting; In the time promoting described push rod, described the second spool is correspondingly mobile makes described main chamber communicate with described the second actuator port through described alternate path, described four-way road, described chamber, described five-way road and described three-way to expose described five-way road, described second switch valve unlatching, and described filler opening and described the second actuator port communicate.
Wherein, described second switch valve also comprises the 3rd spool, and it is arranged on described the second spool, and described push rod conflicts on described the 3rd spool, and the sectional area of described the 3rd spool is less than the sectional area of described the second spool.
Wherein, described base is fixed on described valve body by bolt.
Wherein, described sequence valve further comprises the 3rd actuator port, and wherein, described the 3rd actuator port communicates with described the first actuator port.
Wherein, described the 3rd actuator port is arranged on the top of described base, and communicates with described the first path in described base.
For solving the problems of the technologies described above, another technological scheme that the utility model adopts is: a kind of hydraulic control circuit is provided, described hydraulic control circuit comprises the first sequence valve, the second sequence valve, the first telescopic oil cylinder, the second telescopic oil cylinder and the 3rd telescopic oil cylinder, wherein, described the first sequence valve and described the second sequence valve are respectively sequence valve as above, the filler opening of described the first sequence valve is as the filler opening of described hydraulic control circuit, the first actuator port of described the first sequence valve connects the filler opening of described the second sequence valve, the second actuator port of described the first sequence valve connects described the first telescopic oil cylinder, the second actuator port of described the second sequence valve connects described the second telescopic oil cylinder, the first actuator port of described the second sequence valve connects described the 3rd telescopic oil cylinder.
Wherein, described the first sequence valve and described the second sequence valve are connected respectively the rodless cavity of described the first telescopic oil cylinder, described the second telescopic oil cylinder and described the 3rd telescopic oil cylinder.
The beneficial effects of the utility model are: the situation that is different from prior art, the band that hydraulic control circuit of the present utility model can realize telescopic oil cylinder by the sequence valve of two series connection carries flexible, and sequence valve of the present utility model is simple in structure, convenient for installation and maintenance, reliable performance.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the sequence valve shown in the utility model one embodiment;
Fig. 2 is the concrete structure schematic diagram of the sequence valve shown in Fig. 1;
Fig. 3 is that a kind of hydraulic control circuit shown in the utility model one embodiment utilizes sequence valve to drive the structural representation of telescopic oil cylinder;
Fig. 4 is the principle schematic of the hydraulic control circuit shown in Fig. 3;
Fig. 5-8 are that three telescopic oil cylinders are carried out while stretching out operation, the schematic diagram of hydraulic control circuit;
When Fig. 9-12 are three telescopic oil cylinders execution retraction operation, the schematic diagram of hydraulic control circuit.
Embodiment
Refer to Fig. 1, wherein Fig. 1 is the schematic diagram of the sequence valve shown in the utility model one embodiment.As shown in Figure 1, sequence valve 100 shown in the present embodiment comprises oil inlet P, the first actuator port B, the second actuator port A, the first switch valve 110 and second switch valve 120, wherein, the first switch valve 110 is arranged between oil inlet P and the first actuator port B, in the time that the first switch valve 110 is opened, oil inlet P communicates with the first actuator port B; And second switch valve 120 is arranged between oil inlet P and the second actuator port A, in the time that second switch valve 120 is opened, oil inlet P communicates with the second actuator port A.Preferably, sequence valve 100 can further comprise the 3rd actuator port B ', and it communicates with the first actuator port B.
Particularly, refer to Fig. 2, it is the concrete structure schematic diagram of the sequence valve 100 shown in Fig. 1.As shown in Figure 1, the first switch valve 110 in sequence valve 100 comprises base 111, valve pocket 112, the first spool 113, pull bar 114, the first spring 115 and the first screw plug 116.Wherein, oil inlet P, the first actuator port B and the second actuator port A are all arranged on base 111, in base 111, offer main chamber 1111 and the first path 1112, wherein main chamber 1111 communicates with oil inlet P, and the first path 1112 is communicated with the first actuator port B.The first screw plug 116 is arranged on a side of base 111 and seals the main chamber 1111 in base 111.Valve pocket 112 and the first spool 113 are arranged in the main chamber 1111 of base 111, the first path 1112 is near a side setting of valve pocket 112, and the first spool 113 is conflicted in this side of valve pocket 112 and closed the first path 1112 and makes the non-connection of the first path 1112 main chamber 1111.The stub end conflict of pull bar 114 is the first side near valve pocket 112 at the first spool 113, and the first spring is conflicted at the first spool 113 in the second side away from valve pocket 112.
Therefore, in the time pulling pull bar 114, pull bar 114 can force the first spool 113 away from valve pocket 112, thereby exposes the first path 1112, the first path 1112 communicates with main chamber 1111, therefore, the oil inlet P communicating with main chamber 1111 and the first actuator port B communicating with the first path 1112 communicate, and that is to say, in the time pulling pull bar 114, the first spool 113 is opened, and the first switch valve 110 is opened, and oil inlet P communicates with the first actuator port B.And in the time stopping drag pull bar 114, under the effect of the first spring 115, the first spool 113 resets, the first spool 113 return-to-home positions continue to seal the first path 1112, and the first path 1112 is communicated with main chamber 1111 is non-, that is to say, in the time stopping drag pull bar 114, the first spool 113 resets, and the first switch valve 110 cuts out, and oil inlet P is with first actuator port B is non-communicates.
In addition, in base 111, also offer alternate path 1113 and three-way 1114, wherein alternate path 1113 communicates with main chamber 1111, and three-way 1114 communicates with the second actuator port A, and the alternate path 1113 in base 111 with three-way 1114 for being connected with the related pathways of second switch valve 120, therefore, the main chamber 1111 in base 111 is connected with the second actuator port A with three-way 1114 through alternate path 1113, second switch valve 120.
Swivel nut 122 is arranged on a side of valve body 121, and the second screw plug 123 is arranged on the opposite side that valve body 121 is relative.The second spool 125 is arranged on the inferior chamber 1211 in valve body 121 and seals five-way road 1213, push rod 124 runs through swivel nut 122 and extends to the inferior chamber 1211 in valve body 121 and conflict in a side of the second spool 125, and the second spring 126 is arranged in described the second screw plug 123 and conflicts at the relative opposite side of the second spool 125.
Therefore, in the time promoting push rod 124, push rod 124 can force the second spool 125 correspondingly to move, thereby expose five-way road 1213, therefore, the main chamber 1111 in base 111 passes through inferior chamber 1211, five-way road 1213 and the three-way 1114 of alternate paths 1113, four-way road 1212, valve body 121 and communicates with the second actuator port A.That is to say, in the time promoting push rod 124, the second spool 125 is opened, and second switch valve 120 is opened, and oil inlet P communicates with the second actuator port A.And in the time stopping pushing drawing rod 124, under the effect of the second spring 126, the second spool 125 resets, return-to-home position continues to seal five-way road 1213, and non-the communicating of inferior chamber 1211 of five-way road 1213 and valve body 121, that is to say, in the time stopping pushing drawing rod 124, the second spool 125 resets, and second switch valve 120 cuts out, and oil inlet P is with second actuator port A is non-communicates.
In the present embodiment, preferably, be also provided with the 3rd spool 127 on the second spool 125, wherein, the sectional area of the 3rd spool 127 is less, and it is less than the sectional area of the second spool 125.Second spool 125 of conflicting on the 3rd spool 127 thereby push rod 124 is conflicted.Because the sectional area of the 3rd spool 127 is less, therefore, in the time promoting push rod 124, only need less power just can promote push rod 124, the second spool 125 is opened.
In addition, sequence valve 100 also comprises the 3rd actuator port B ', and it can be arranged on the upper end of base 111, and communicates with the first path 1112 of offering in base 111, that is to say, the 3rd actuator port B ' communicates with the first actuator port B.
Refer to Fig. 3-4, wherein Fig. 3 is the structural representation that a kind of hydraulic control circuit shown in the utility model one embodiment utilizes sequence valve driving telescopic oil cylinder, and Fig. 4 is the principle schematic of the hydraulic control circuit shown in Fig. 3.As shown in Figure 3-4, in the present embodiment, hydraulic control circuit is to utilize the sequence valve of two series connection to drive three telescopic oil cylinders to carry out flexible operation.
Particularly, hydraulic control circuit 200 comprises the first sequence valve 210, the second sequence valve 220, the first telescopic oil cylinder 260, the second telescopic oil cylinder 270 and the 3rd telescopic oil cylinder 280. wherein, the oil inlet P of the first sequence valve 210 is as the filler opening of hydraulic control circuit 200, it can be connected to fuel tank by oil pump, the first actuator port B of the first sequence valve 210 connects the oil inlet P of the second sequence valve 220, and the second actuator port A of the first sequence valve 210 connects the first telescopic oil cylinder 260.The second actuator port A of the second sequence valve 220 connects the second telescopic oil cylinder 270, and the first actuator port B of the second sequence valve 220 connects the 3rd telescopic oil cylinder 280.In the present embodiment, the first sequence valve 210 is the rodless cavities that are connected respectively the first telescopic oil cylinder 260, the second telescopic oil cylinder 270 and the 3rd telescopic oil cylinder 280 with the second sequence valve 220.
The working principle of hydraulic control circuit 200 will be introduced particularly below.
Wherein, it is that three telescopic oil cylinders are carried out while stretching out operation that Fig. 5-8 illustrate, the schematic diagram of hydraulic control circuit.
As shown in Figure 5, in the time that operation is stretched out in execution, under original state, the second switch valve of the first sequence valve 210 and the second sequence valve 220 is all opened, and the first switch valve all cuts out, that is to say, the oil inlet P that the push rod 124 in the first sequence valve 210 and the second sequence valve 220 is all pushed open to open in the second spool 125, the first sequence valves 210 and the second sequence valve 220 communicates with the second actuator port A.Because the first telescopic oil cylinder 260 is connected with the second actuator port A of the first sequence valve 210, therefore, pressure oil is after the oil inlet P of the first sequence valve 210 is injected, enter the rodless cavity of the first telescopic oil cylinder 260 by the second actuator port A bis-of the first sequence valve 210, promote the first telescopic oil cylinder 260 and stretch out.At this moment, because the first switch valve of the first sequence valve 210 and the second sequence valve 220 cuts out, therefore other two telescopic oil cylinders do not have the injection of pressure oil.
As shown in Figure 6, after the first telescopic oil cylinder 260 stretches out and puts in place, open the first switch valve of the first sequence valve 210, that is to say, pull bar 114 in the first sequence valve 210 pulls open to open the first spool 113, and the oil inlet P of the first sequence valve 210 communicates with the first actuator port B.Now, because the oil inlet P of the first sequence valve 210 communicates with the first actuator port B, and the oil inlet P of the second sequence valve 220 communicates with the second actuator port A, therefore, pressure oil can enter the rodless cavity of the second telescopic oil cylinder 270 being connected with the second actuator port A of the second sequence valve 220, promotes the second telescopic oil cylinder 270 and stretches out.At this moment, the first telescopic oil cylinder 260 has stretched out and has put in place, and the 3rd not injection of pressure oil of telescopic oil cylinder 280.
As shown in Figure 7, after the second telescopic oil cylinder 270 also stretches out and puts in place, open the first switch valve of the second sequence valve 220, that is to say, pull bar 114 in the second sequence valve 220 also pulls open to open its first spool 113, and the oil inlet P of the second sequence valve 220 communicates with the first actuator port B.Now, because the oil inlet P of the first sequence valve 210 and the second sequence valve 220 all communicates with the first actuator port B, therefore, pressure oil can enter the rodless cavity of the 3rd telescopic oil cylinder 280 being connected with the first actuator port B of the second sequence valve 220, promotes the 3rd telescopic oil cylinder 280 and stretches out.At this moment, the first telescopic oil cylinder 260 and the second telescopic oil cylinder 270 all stretch out and put in place.
As shown in Figure 8, the first telescopic oil cylinder 260, the second telescopic oil cylinder 270 and the 3rd telescopic oil cylinder 280 all stretch out and put in place.
Fig. 9-12 illustrate while being three telescopic oil cylinders execution retraction operation, the schematic diagram of hydraulic control circuit.
As shown in Figure 9, in the time carrying out retraction operation, main valve commutation, pressure oil enters the rod chamber of each telescopic oil cylinder.Under original state, the first switch valve of the first sequence valve 210 and the second sequence valve 220 is all opened, and second switch valve all cuts out.That is to say, oil inlet P in the first sequence valve 210 and the second sequence valve 220 communicates with the first actuator port B, therefore the rodless cavity of the 3rd telescopic oil cylinder 280 communicates with fuel tank by the first sequence valve 210 and the second sequence valve 220, promotes the 3rd telescopic oil cylinder 280 and retracts.At this moment, because the second switch valve of the first sequence valve 210 and the second sequence valve 220 cuts out, therefore other two telescopic oil cylinders are not carried out retraction operation.
As shown in figure 10, after the 3rd telescopic oil cylinder 280 retractions put in place, open the second switch valve of the second sequence valve 220, that is to say, the oil inlet P of the second sequence valve 220 communicates with the second actuator port A, because the oil inlet P of the first sequence valve 210 communicates with the first actuator port B, and the oil inlet P of the second sequence valve 220 communicates with the second actuator port A, therefore the rodless cavity of the second telescopic oil cylinder 270 communicates with fuel tank by the first sequence valve 210 and the second sequence valve 220, promotes the second telescopic oil cylinder 270 and retracts.At this moment, the 3rd telescopic oil cylinder 280 has been retracted and has been put in place, and the first telescopic oil cylinder 260 is not carried out retraction operation.
As shown in figure 11, after the second telescopic oil cylinder 270 is also retracted and is put in place, open the second switch valve of the first sequence valve 210, that is to say, the oil inlet P of the first sequence valve 210 communicates with the second actuator port A, therefore the rodless cavity of the first telescopic oil cylinder 260 communicates with fuel tank by the first sequence valve 210, promotes the first telescopic oil cylinder 260 and retracts.At this moment, the second telescopic oil cylinder 270 and the 3rd telescopic oil cylinder 280 are all retracted and are put in place
As shown in figure 12, the first telescopic oil cylinder 260, the second telescopic oil cylinder 270 and the 3rd telescopic oil cylinder 280 are all retracted and are put in place.
Therefore, just can realize the sequentially action of three telescopic oil cylinders by above-mentioned operation, band carries and stretches.
In sum, the band that hydraulic control circuit of the present utility model can realize telescopic oil cylinder by the sequence valve of two series connection carries flexible, and sequence valve of the present utility model is simple in structure, convenient for installation and maintenance, reliable performance.
The foregoing is only mode of execution of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model specification and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (10)
1. a sequence valve, it is characterized in that, described sequence valve (100) comprises filler opening (P), the first actuator port (B), the second actuator port (A), the first switch valve (110) and second switch valve (120), wherein, described the first switch valve (110) is arranged between described filler opening (P) and described the first actuator port (B), in the time that described the first switch valve (110) is opened, described filler opening (P) communicates with described the first actuator port (B); Described second switch valve (120) is arranged between described filler opening (P) and described the second actuator port (A), in the time that described second switch valve (120) is opened, described filler opening (P) communicates with described the second actuator port (A).
2. sequence valve according to claim 1, it is characterized in that, described the first switch valve (110) comprises base (111), valve pocket (112), the first spool (113), pull bar (114), the first spring (115) and the first screw plug (116), wherein, described filler opening (P) and described the first actuator port (B) are arranged on described base (111), and in described base (111), offer main chamber (1111) and the first path (1112), described main chamber (1111) communicates with described filler opening (P), described the first path (1112) communicates with described the first actuator port (B), described the first screw plug (116) is arranged on a side of base (111) and seals described main chamber (1111), described valve pocket (112) and described the first spool (113) are arranged in described main chamber (1111), and described the first spool (113) closes described the first path (1112), the stub end of described pull bar (114) is conflicted in a side of the close described valve pocket (112) of described the first spool (113), and described the first spring (115) conflict at described the first spool (113) opposite side away from described valve pocket (112), in the time pulling described pull bar (114), described the first spool (113) is correspondingly mobile makes described the first path (1112) communicate with described main chamber (1111) to expose described the first path (1112), described the first switch valve (110) is opened, and the described filler opening (P) communicating with described main chamber (1111) and described the first actuator port (B) of communicating with described the first path (1112) communicate.
3. sequence valve according to claim 2, it is characterized in that, described the second actuator port (A) is arranged on described base (111), and in described base (111), also offer alternate path (1113) and three-way (1114), wherein, described alternate path (1113) communicates with the described main chamber (1111) of described base (111), described three-way (1114) communicates with described the second actuator port (A), and described alternate path (1113) is connected with described second switch valve (120) respectively with described three-way (1114), to realize being connected of described actuator port (P) and described the second actuator port (A) by described second switch valve (120).
4. sequence valve according to claim 3, it is characterized in that, described second switch valve (120) comprises valve body (121), swivel nut (122), the second screw plug (123), push rod (124), the second spool (125) and the second spring (126), wherein, described valve body (121) is connected with described base (111), in described valve body (121), offer time chamber (1211), four-way road (1212) and five-way road (1213), described four-way road (1212) is connected with described chamber (1211) respectively with described five-way road (1213), and described four-way road (1212) communicates with the described alternate path (1113) in described base (111), described five-way road (1213) communicates with the described three-way (1114) in described base (111), described swivel nut (122) is arranged on a side of described valve body (121), and described the second screw plug (123) is arranged on the relative opposite side of described valve body (121), described the second spool (125) is arranged in described the chamber (1211) in described valve body (121) and seals described five-way road (1213), described push rod (124) runs through described swivel nut (122) and extends to described chamber (1211) and conflict in a side of described the second spool (125), within described the second spring (126) is arranged on described the second screw plug (123) and the opposite side of described the second spool (125) of conflicting, in the time promoting described push rod (124), described the second spool (125) is correspondingly mobile makes described main chamber (111) communicate with described the second actuator port (A) through described alternate path (1213), described four-way road (1212), described chamber (1211), described five-way road (1213) and described three-way (1114) to expose described five-way road (1213), described second switch valve (120) is opened, and described filler opening (P) and described the second actuator port (A) communicate.
5. sequence valve according to claim 4, it is characterized in that, described second switch valve (120) also comprises the 3rd spool (127), it is arranged on described the second spool (125), and described push rod (124) is conflicted on described the 3rd spool (127), wherein, the sectional area of described the 3rd spool (127) is less than the sectional area of described the second spool (125).
6. sequence valve according to claim 4, is characterized in that, described base (111) is fixed on described valve body (121) by bolt.
7. sequence valve according to claim 4, it is characterized in that, described sequence valve (100) further comprises the 3rd actuator port (B '), wherein, described the 3rd actuator port (B ') communicate with described the first actuator port (B).
8. sequence valve according to claim 7, it is characterized in that, described the 3rd actuator port (B ') be arranged on described base (111) above, and communicate with described the first path (1112) in described base (111).
9. a hydraulic control circuit, it is characterized in that, described hydraulic control circuit comprises the first sequence valve (210), the second sequence valve (220), the first telescopic oil cylinder (260), the second telescopic oil cylinder (270) and the 3rd telescopic oil cylinder (280), wherein, described the first sequence valve (210) and described the second sequence valve (220) are respectively the sequence valve as described in claim 1-8 any one, the filler opening (P) of described the first sequence valve (210) is as the filler opening of described hydraulic control circuit (200), first actuator port (B) of described the first sequence valve (210) connects the filler opening (P) of described the second sequence valve (220), second actuator port (A) of described the first sequence valve (210) connects described the first telescopic oil cylinder (260), second actuator port (A) of described the second sequence valve (220) connects described the second telescopic oil cylinder (270), first actuator port (B) of described the second sequence valve (220) connects described the 3rd telescopic oil cylinder (280).
10. hydraulic control circuit according to claim 9, it is characterized in that, described the first sequence valve (210) and described the second sequence valve (220) are connected respectively the rodless cavity of described the first telescopic oil cylinder (260), described the second telescopic oil cylinder (270) and described the 3rd telescopic oil cylinder (280).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420019671.8U CN203670338U (en) | 2014-01-13 | 2014-01-13 | Sequence valve and corresponding hydraulic control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420019671.8U CN203670338U (en) | 2014-01-13 | 2014-01-13 | Sequence valve and corresponding hydraulic control circuit |
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| Publication Number | Publication Date |
|---|---|
| CN203670338U true CN203670338U (en) | 2014-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420019671.8U Expired - Fee Related CN203670338U (en) | 2014-01-13 | 2014-01-13 | Sequence valve and corresponding hydraulic control circuit |
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| CN (1) | CN203670338U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106337846A (en) * | 2016-10-12 | 2017-01-18 | 中南大学 | Piling machine pile clamping hydraulic system and control method capable of achieving sequential pile clamping and pile clamping sequence control valve |
| CN108249324A (en) * | 2017-12-12 | 2018-07-06 | 湖南百特随车起重机有限公司 | A kind of sequential telescopic mechanism of the gib arm of crane |
| CN111561487A (en) * | 2020-06-17 | 2020-08-21 | 朱金和 | Sequence valve sealing structure and model selection for engineering machinery |
-
2014
- 2014-01-13 CN CN201420019671.8U patent/CN203670338U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106337846A (en) * | 2016-10-12 | 2017-01-18 | 中南大学 | Piling machine pile clamping hydraulic system and control method capable of achieving sequential pile clamping and pile clamping sequence control valve |
| CN108249324A (en) * | 2017-12-12 | 2018-07-06 | 湖南百特随车起重机有限公司 | A kind of sequential telescopic mechanism of the gib arm of crane |
| CN111561487A (en) * | 2020-06-17 | 2020-08-21 | 朱金和 | Sequence valve sealing structure and model selection for engineering machinery |
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