CN204003697U - Pumping hydraulic system and pumping equipment - Google Patents
Pumping hydraulic system and pumping equipment Download PDFInfo
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- CN204003697U CN204003697U CN201420408651.XU CN201420408651U CN204003697U CN 204003697 U CN204003697 U CN 204003697U CN 201420408651 U CN201420408651 U CN 201420408651U CN 204003697 U CN204003697 U CN 204003697U
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- valve
- selector valve
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- oil
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- 238000005086 pumping Methods 0.000 title claims abstract description 109
- 239000000446 fuel Substances 0.000 claims abstract description 8
- 239000012530 fluid Substances 0.000 claims description 38
- 239000000945 filler Substances 0.000 claims description 17
- 239000002828 fuel tank Substances 0.000 claims description 12
- 238000010276 construction Methods 0.000 abstract description 4
- 230000009975 flexible effect Effects 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 152
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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Abstract
The utility model discloses a pump sending hydraulic system, include through first pump sending hydro-cylinder (1) and second pump sending hydro-cylinder (2) of main reversing control circuit fuel feeding through main oil pump (3), wherein, this pump sending hydraulic system still includes supplementary fuel feeding oil circuit (4), this supplementary fuel feeding oil circuit (4) through first supplementary reversing control circuit hydraulic connection in first pump sending hydro-cylinder (1) to through the second supplementary reversing control circuit first hydraulic connection in second pump sending hydro-cylinder (2), in order to pass through first supplementary reversing control circuit and the supplementary reversing control circuit of second control respectively first pump sending hydro-cylinder (1) and the flexible action of second pump sending hydro-cylinder (2). Furthermore, the utility model also discloses a pumping installations. The pumping hydraulic system can realize pumping emergency, and can ensure that concrete pumping construction is not interrupted when a main oil pump and the like break down.
Description
Technical field
The utility model relates to a kind of hydraulic system of pump and pumping equipment.
Background technique
Concrete pumping equipment is a kind of equipment of extensive use in engineering machinery, can be for the structural material of the thickness such as pump concrete, mud state.Fig. 1 has shown the partial schematic diagram of a kind of pumping equipment of the prior art.This pumping equipment comprises hydraulic system of pump, two concrete cylinders 1 ' and the hopper 2 ' being connected with two concrete cylinders 1 ', this hydraulic system of pump comprises by the first pumping oil cylinder 1 of main oil pump 3 fuel feeding and the second pumping oil cylinder 2, this the first pumping oil cylinder 1 and the second pumping oil cylinder 2 are respectively used to drive two piston movements in concrete cylinder 1 ', enter concreting point so that two concrete cylinders 1 ' can suck concrete in concrete cylinder 1 ' and promote concrete cylinder 1 ' interior concrete from hopper 2 ' by distributing valve 3 '.
The major defect that above-mentioned pumping equipment of the prior art exists is: if the main oil pump 3 in the hydraulic system of pump of pumping equipment breaks down and can not get rid of in the short time time, concrete can solidify in two concrete cylinders 1 ', hopper 2 ', distributing valve 3 ', after concrete setting, need to pull down the large-sized structural parts such as two concrete cylinders 1 ', hopper 2 ', distributing valve 3 ' and keep in repair, thereby bring huge economic loss to the user of pumping equipment.
Given this, be necessary to provide a kind of novel hydraulic system of pump, to overcome or to alleviate above-mentioned defect.
Model utility content
An object of the present utility model is to provide a kind of hydraulic system of pump, and it is emergent that this hydraulic system of pump can be realized pumping, ensures also can make Concrete Pumping Construction not interrupt in the time that main oil pump etc. breaks down.
Another object of the present utility model is to provide a kind of pumping equipment, the hydraulic system of pump that this pumping equipment uses the utility model to provide.
To achieve these goals, the utility model provides a kind of hydraulic system of pump, comprise the first pumping oil cylinder and the second pumping oil cylinder via main commutation control loop fuel feeding by main oil pump, wherein, this hydraulic system of pump also comprises auxiliary feed-oil oil circuit, this auxiliary feed-oil oil circuit assists commutation control loop hydraulic connecting in described the first pumping oil cylinder by first, and assist commutation control loop hydraulic connecting in described the second pumping oil cylinder by second, controlling respectively described the first pumping oil cylinder and the second pumping oil cylinder expanding-contracting action by the described first auxiliary commutation control loop and the second auxiliary commutation control loop.
Preferably, the work cross-sectional flow area of the described first auxiliary commutation control loop is less than the work cross-sectional flow area of described main commutation control loop, and the work cross-sectional flow area of the described second auxiliary commutation control loop is less than the work cross-sectional flow area of described main commutation control loop.
Preferably, the described first auxiliary commutation control loop comprises the first selector valve, the described second auxiliary commutation control loop comprises the second selector valve, the first actuator port of described the first selector valve and the second actuator port are connected to respectively rod chamber and the rodless cavity of described the first pumping oil cylinder, and the filler opening of described the first selector valve and return opening are connected to respectively described auxiliary feed-oil oil circuit and fuel tank, the first actuator port of described the second selector valve and the second actuator port are connected to respectively rodless cavity and the rod chamber of described the second pumping oil cylinder, the filler opening of described the second selector valve and return opening are connected to respectively described auxiliary feed-oil oil circuit and fuel tank, described the first selector valve and the second selector valve can optionally switch to respectively the described filler opening and described the second actuator port conducting that make separately, and described return opening and described the first actuator port conducting, or make described filler opening and described the first actuator port conducting, and described return opening and described the second actuator port conducting.
Preferably, described the first selector valve and the second selector valve are respectively O type 3-position 4-way solenoid directional control valve.
Preferably, described main commutation control loop is formed as: described main oil pump and fuel tank are connected in main reversing valve via main oil feeding line and main oil return circuit, this main reversing valve is connected in the first main working oil path and the second main working oil path, this first main working oil path is connected in rodless cavity and the rod chamber of described the first pumping oil cylinder via high/low pressure cut-over valve, this second main working oil path is connected in rodless cavity and the rod chamber of described the second pumping oil cylinder via described high/low pressure cut-over valve.
Preferably, described high/low pressure cut-over valve comprises: the first cartridge valve, the second cartridge valve, the 3rd cartridge valve, the 4th cartridge valve, the 5th cartridge valve, the 6th cartridge valve and the 3rd selector valve, described the first main working oil path is connected to respectively the side direction hydraulic fluid port of described the first cartridge valve and the side direction hydraulic fluid port of the second cartridge valve, the forward hydraulic fluid port of described the first cartridge valve and the forward hydraulic fluid port of the second cartridge valve are connected to respectively rodless cavity and the rod chamber of described the first pumping oil cylinder, the also corresponding forward hydraulic fluid port of described the 3rd cartridge valve and the forward hydraulic fluid port of described the 4th cartridge valve of being connected to separately of the rodless cavity of described the first pumping oil cylinder and rod chamber, the side direction hydraulic fluid port of the side direction hydraulic fluid port of described the 3rd cartridge valve and described the 4th cartridge valve is corresponding rodless cavity and the rod chamber that is connected to described the second pumping oil cylinder separately, the also corresponding forward hydraulic fluid port of described the 5th cartridge valve and the forward hydraulic fluid port of described the 6th cartridge valve of being connected to separately of the rodless cavity of described the second pumping oil cylinder and rod chamber, the side direction hydraulic fluid port of the side direction hydraulic fluid port of described the 5th cartridge valve and the 6th cartridge valve is connected to respectively described the second main working oil path, the first actuator port of described the 3rd selector valve respectively with described the second cartridge valve spring chamber, the spring chamber of described the 3rd cartridge valve is connected with the spring chamber of described the 6th cartridge valve, the second actuator port of described the 3rd selector valve respectively with described the first cartridge valve spring chamber, the spring chamber of described the 4th cartridge valve is connected with the spring chamber of described the 5th cartridge valve, the filler opening of described the 3rd selector valve is connected with high low pressure switching controls oil feeding line, return opening is connected to fuel tank, described the 3rd selector valve can optionally switch to the first actuator port conducting of the filler opening and described the 3rd selector valve that make described the 3rd selector valve, and the second actuator port conducting of the return opening of described the 3rd selector valve and described the 3rd selector valve, or switch to the second actuator port conducting of the filler opening and described the 3rd selector valve that make described the 3rd selector valve, and the first actuator port conducting of the return opening of described the 3rd selector valve and described the 3rd selector valve, or switch to and make the filler opening of described the 3rd selector valve and the first actuator port of described the 3rd selector valve and the second actuator port conducting, and the first actuator port of the return opening of described the 3rd selector valve and described the 3rd selector valve and the second actuator port disconnect.
Preferably, described the 3rd selector valve is P type 3-position 4-way solenoid directional control valve.
In addition, the utility model also provides a kind of pumping equipment, and wherein, this pumping equipment comprises according to the hydraulic system of pump described in technique scheme.
Preferably, this pumping equipment comprises the first concrete conveying cylinder and the second concrete conveying cylinder, and the piston in described the first concrete conveying cylinder is connected with the piston rod of described the first pumping oil cylinder and the piston rod of the second pumping oil cylinder respectively with the piston in the second concrete conveying cylinder.
Pass through technique scheme, because this hydraulic system of pump also comprises auxiliary feed-oil oil circuit, and this auxiliary feed-oil oil circuit hydraulic connecting is in the first pumping oil cylinder and the second pumping oil cylinder, can control the first pumping oil cylinder and the second pumping oil cylinder expanding-contracting action, even so also can work on by auxiliary feed-oil oil circuit control the first pumping oil cylinder and the second pumping oil cylinder in the time that main oil pump of hydraulic system of pump etc. breaks down, thereby guarantee has been used the pumping equipment of this hydraulic system of pump to realize Concrete Pumping Construction not to be interrupted, while having avoided main oil pump of the prior art to break down, need to dismantle or change concrete member and the tremendous economic loss that causes.
Other feature and advantage of the present utility model are described in detail the embodiment part subsequently.
Brief description of the drawings
Accompanying drawing is to be used to provide further understanding of the present utility model, and forms a part for specification, is used from explanation the utility model, but does not form restriction of the present utility model with embodiment one below.In the accompanying drawings:
Fig. 1 is the partial schematic diagram of a kind of pumping equipment in technology.
Fig. 2 is according to the schematic diagram of the hydraulic system of pump of mode of execution of the present utility model.
Fig. 3 is according to the schematic diagram of the first selector valve of mode of execution of the present utility model and the second selector valve.
Fig. 4 is according to the schematic diagram of the 3rd selector valve of mode of execution of the present utility model.
Description of reference numerals
1 first pumping oil cylinder 2 second pumping oil cylinders
3 main oil pump 4 auxiliary feed-oil oil circuits
5 first selector valve 6 second selector valves
The main oil circuit of organizing altogether of 7 first main working oil path 8 second
9 first cartridge valve 10 second cartridge valves
11 the 3rd cartridge valve 12 the 4th cartridge valves
13 the 5th cartridge valve 14 the 6th cartridge valves
15 the 3rd selector valve 16 main reversing valves
A first actuator port B the second actuator port
P filler opening T return opening
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated.Should be understood that, embodiment described herein only, for description and interpretation the utility model, is not limited to the utility model.
Referring to Fig. 2, according to an aspect of the present utility model, a kind of hydraulic system of pump is provided, comprise the first pumping oil cylinder 1 and the second pumping oil cylinder 2 via main commutation control loop fuel feeding by main oil pump 3, wherein, this hydraulic system of pump also comprises auxiliary feed-oil oil circuit 4, this auxiliary feed-oil oil circuit 4 assists commutation control loop hydraulic connecting in the first pumping oil cylinder 1 by first, and assist commutation control loop hydraulic connecting in the second pumping oil cylinder 2 by second, controlling respectively the first pumping oil cylinder 1 and the second pumping oil cylinder 2 expanding-contracting actions by the first auxiliary commutation control loop and the second auxiliary commutation control loop.
As mentioned above, because this hydraulic system of pump also comprises auxiliary feed-oil oil circuit 4, and this auxiliary feed-oil oil circuit 4 assists commutation control loop hydraulic connecting in the first pumping oil cylinder 1 by first, and assist commutation control loop hydraulic connecting in the second pumping oil cylinder 2 by second, controlling respectively the first pumping oil cylinder 1 and the second pumping oil cylinder 2 expanding-contracting actions by the first auxiliary commutation control loop and the second auxiliary commutation control loop, even so also can control the first pumping oil cylinder 1 and the second pumping oil cylinder 2 works on by auxiliary feed-oil oil circuit 4 in the time that main oil pump 3 grades of hydraulic system of pump break down, thereby guarantee has been used the pumping equipment of this hydraulic system of pump to realize Concrete Pumping Construction not to be interrupted, while having avoided main oil pump 3 of the prior art to break down, need to dismantle or change concrete member and the tremendous economic loss that causes.
Wherein, be understandable that, auxiliary feed-oil oil circuit 4 itself plays auxiliary or emergencing action to this hydraulic system of pump, therefore the so large oil mass that provides main oil pump 3 to supply can be provided, so the work cross-sectional flow area of the first auxiliary commutation control loop can be less than the work cross-sectional flow area of main commutation control loop, the work cross-sectional flow area of the second auxiliary commutation control loop can be less than the work cross-sectional flow area of main commutation control loop.
The above-mentioned first auxiliary commutation control loop and the second auxiliary commutation control loop are not limited by concrete structure, referring to Fig. 2 and Fig. 3, according to preferred implementation of the present utility model, the first auxiliary commutation control loop can comprise the first selector valve 5, the second auxiliary commutation control loop can comprise the second selector valve 6, the first actuator port A of the first selector valve 5 and the second actuator port B are connected to respectively rod chamber and the rodless cavity of the first pumping oil cylinder 1, and the oil inlet P of the first selector valve 5 and oil return inlet T are connected to respectively auxiliary feed-oil oil circuit 4 and fuel tank, the first actuator port A of the second selector valve 6 and the second actuator port B are connected to respectively rodless cavity and the rod chamber of the second pumping oil cylinder 2, the oil inlet P of the second selector valve 6 and oil return inlet T are connected to respectively auxiliary feed-oil oil circuit 4 and fuel tank, wherein the first selector valve 5 can optionally switch to the oil inlet P and the second actuator port B conducting that make the first selector valve 5, and the oil return inlet T of the first selector valve 5 and the first actuator port A conducting, thereby can make the first pumping oil cylinder 1 stretch out motion, or optionally switch to the oil inlet P and the first actuator port A conducting that make the first selector valve 5, and oil return inlet T and the second actuator port B conducting, thereby can make the first pumping oil cylinder 1 retraction movement, and the second selector valve 6 can optionally switch to and makes the oil inlet P of the second selector valve 5 and the oil return inlet T of the second actuator port B conducting and the second selector valve 6 and the first actuator port A conducting, thereby can make the second pumping oil cylinder 2 retraction movement, or optionally switch to and make the oil inlet P of the second selector valve 6 and the oil return inlet T of the first actuator port A conducting and the second selector valve 6 and the second actuator port B conducting, thereby can make the second pumping oil cylinder 2 stretch out motion.
Here, the structural type of the first selector valve 5 and the second selector valve 6 is not particularly limited, and for example, the first selector valve 5 and the second selector valve 6 can be respectively O type 3-position 4-way solenoid directional control valve.
In addition, main commutation control loop can be formed as: main oil pump 3 and fuel tank are connected in main reversing valve 16 via main oil feeding line and main oil return circuit, this main reversing valve 16 is connected in the first main working oil path 7 and the second main working oil path 8, this the first main working oil path 7 is connected in rodless cavity and the rod chamber of the first pumping oil cylinder 1 via high/low pressure cut-over valve, this second main working oil path 8 is connected in rodless cavity and the rod chamber of the second pumping oil cylinder 2 via high/low pressure cut-over valve.Particularly, high/low pressure cut-over valve can comprise: the first cartridge valve 9, the second cartridge valve 10, the 3rd cartridge valve 11, the 4th cartridge valve 12, the 5th cartridge valve 13, the 6th cartridge valve 14 and the 3rd selector valve 15, the first main working oil path 7 is connected to respectively the side direction hydraulic fluid port of the first cartridge valve 9 and the side direction hydraulic fluid port of the second cartridge valve 10, the forward hydraulic fluid port of the forward hydraulic fluid port of the first cartridge valve 9 and the second cartridge valve 10 is connected to respectively rodless cavity and the rod chamber of the first pumping oil cylinder 1, the also corresponding forward hydraulic fluid port of the 3rd cartridge valve 11 and the forward hydraulic fluid port of the 4th cartridge valve 12 of being connected to separately of the rodless cavity of the first pumping oil cylinder 1 and rod chamber, the side direction hydraulic fluid port of the side direction hydraulic fluid port of the 3rd cartridge valve 11 and the 4th cartridge valve 12 is corresponding rodless cavity and the rod chamber that is connected to the second pumping oil cylinder 2 separately, the also corresponding forward hydraulic fluid port of the 5th cartridge valve 13 and the forward hydraulic fluid port of the 6th cartridge valve 14 of being connected to separately of the rodless cavity of the second pumping oil cylinder 2 and rod chamber, the side direction hydraulic fluid port of the side direction hydraulic fluid port of the 5th cartridge valve 13 and the 6th cartridge valve 14 is connected to respectively the second main working oil path 8, the first actuator port A of the 3rd selector valve 15 respectively with the second cartridge valve 10 spring chambers, the spring chamber of the 3rd cartridge valve 11 is connected with the spring chamber of the 6th cartridge valve 14, the second actuator port B of the 3rd selector valve 15 respectively with the first cartridge valve 9 spring chambers, the spring chamber of the 4th cartridge valve 12 is connected with the spring chamber of the 5th cartridge valve 13, the oil inlet P of the 3rd selector valve 15 is connected with high low pressure switching controls oil feeding line, oil return inlet T is connected to fuel tank, the 3rd selector valve 15 can optionally switch to and make the oil inlet P of the 3rd selector valve 15 and the first actuator port A conducting of the 3rd selector valve 15, and the second actuator port B conducting of the oil return inlet T of the 3rd selector valve 15 and the 3rd selector valve 15, or switch to and make the oil inlet P of the 3rd selector valve 15 and the second actuator port B conducting of the 3rd selector valve 15, and the first actuator port A conducting of the oil return inlet T of the 3rd selector valve 15 and the 3rd selector valve 15, or switch to make oil inlet P simultaneously with the first actuator port A and the second actuator port B conducting of the 3rd selector valve 15, and the first actuator port A of the oil return inlet T of the 3rd selector valve 15 and the 3rd selector valve 15 and the second actuator port B disconnect.But high/low pressure cut-over valve of the present utility model is not limited to above specific form.Here, if the main oil pump 3 of hydraulic system of pump breaks down in the working procedure of the first pumping oil cylinder 1 and the second pumping oil cylinder 2, can make the 3rd selector valve 15 switch to and make the oil inlet P of the 3rd selector valve 15 and the first actuator port A of the 3rd selector valve 15 and the second actuator port B conducting, and the first actuator port A of the oil return inlet T of the 3rd selector valve 15 and the 3rd selector valve 15 and the second actuator port B disconnect, thereby make the hydraulic oil in high low pressure switching controls oil feeding line act on the first cartridge valve 9 by the first actuator port A and the second actuator port B of the 3rd selector valve 15 respectively, the second cartridge valve 10, the 3rd cartridge valve 11, the 4th cartridge valve 12, the 5th cartridge valve 13 and the 6th cartridge valve 14 spring chamber separately, thereby make above-mentioned six cartridge valves in closed condition (i.e. six cartridge valves forward hydraulic fluid port separately not with the conducting of side direction hydraulic fluid port), at this moment can make the first pumping oil cylinder 1 and the second pumping oil cylinder 2 continue normal work by the 4 fuel feeding actions of auxiliary feed-oil oil circuit.
Above-mentioned the 3rd selector valve 15 can be P type 3-position 4-way solenoid directional control valve, but the utility model is not limited to this, other suitable selector valves are also fine, and carry out high low pressure switching and can realize and make above-mentioned six cartridge valves in closed condition as long as can realize the hydraulic system of pump that the utility model is provided.
According to another aspect of the present utility model, a kind of pumping equipment (such as concrete mixer etc.) is also provided, wherein, this pumping equipment comprises according to the hydraulic system of pump described in technique scheme.Particularly, this pumping equipment can comprise the first concrete conveying cylinder and the second concrete conveying cylinder, piston in the first concrete conveying cylinder is connected with the piston rod of the first pumping oil cylinder 1 and the piston rod of the second pumping oil cylinder 2 respectively with the piston in the second concrete conveying cylinder, thus, by the to-and-fro motion of the piston rod of the first pumping oil cylinder 1 and the piston rod of the second pumping oil cylinder 2, can realize suction (concrete) and the feeding (concrete) of the first concrete conveying cylinder and the second concrete conveying cylinder, thereby concrete is delivered to concreting point continuously.
Below describe by reference to the accompanying drawings preferred implementation of the present utility model in detail; but; the utility model is not limited to the detail in above-mentioned mode of execution; within the scope of technical conceive of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
It should be noted that in addition each the concrete technical characteristics described in above-mentioned embodiment, in reconcilable situation, can combine by any suitable mode.For fear of unnecessary repetition, the utility model is to the explanation no longer separately of various possible compound modes.
In addition, also can carry out combination in any between various mode of execution of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (9)
1. a hydraulic system of pump, comprise the first pumping oil cylinder (1) and the second pumping oil cylinder (2) via main commutation control loop fuel feeding by main oil pump (3), it is characterized in that, this hydraulic system of pump also comprises auxiliary feed-oil oil circuit (4), this auxiliary feed-oil oil circuit (4) assists commutation control loop hydraulic connecting in described the first pumping oil cylinder (1) by first, and assist commutation control loop hydraulic connecting in described the second pumping oil cylinder (2) by second, controlling respectively described the first pumping oil cylinder (1) and the second pumping oil cylinder (2) expanding-contracting action by the described first auxiliary commutation control loop and the second auxiliary commutation control loop.
2. hydraulic system of pump according to claim 1, it is characterized in that, the work cross-sectional flow area of the described first auxiliary commutation control loop is less than the work cross-sectional flow area of described main commutation control loop, and the work cross-sectional flow area of the described second auxiliary commutation control loop is less than the work cross-sectional flow area of described main commutation control loop.
3. hydraulic system of pump according to claim 1, it is characterized in that, the described first auxiliary commutation control loop comprises the first selector valve (5), the described second auxiliary commutation control loop comprises the second selector valve (6), first actuator port (A) of described the first selector valve (5) and the second actuator port (B) are connected to respectively rod chamber and the rodless cavity of described the first pumping oil cylinder (1), and filler opening (P) and the return opening (T) of described the first selector valve (5) are connected to respectively described auxiliary feed-oil oil circuit (4) and fuel tank, first actuator port (A) of described the second selector valve (6) and the second actuator port (B) are connected to respectively rodless cavity and the rod chamber of described the second pumping oil cylinder (2), filler opening (P) and the return opening (T) of described the second selector valve (6) are connected to respectively described auxiliary feed-oil oil circuit (4) and fuel tank, described the first selector valve (5) and the second selector valve (6) can optionally switch to respectively the described filler opening (P) and described the second actuator port (B) conducting that make separately, and described return opening (T) and described the first actuator port (A) conducting, or make described filler opening (P) and described the first actuator port (A) conducting, and described return opening (T) and described the second actuator port (B) conducting.
4. hydraulic system of pump according to claim 3, is characterized in that, described the first selector valve (5) and the second selector valve (6) are respectively O type 3-position 4-way solenoid directional control valve.
5. according to the hydraulic system of pump described in any one in claim 1 to 4, it is characterized in that, described main commutation control loop is formed as: described main oil pump (3) and fuel tank are connected in main reversing valve (16) via main oil feeding line and main oil return circuit, this main reversing valve (16) is connected in the first main working oil path (7) and the second main working oil path (8), this first main working oil path (7) is connected in rodless cavity and the rod chamber of described the first pumping oil cylinder (1) via high/low pressure cut-over valve, this second main working oil path (8) is connected in rodless cavity and the rod chamber of described the second pumping oil cylinder (2) via described high/low pressure cut-over valve.
6. hydraulic system of pump according to claim 5, it is characterized in that, described high/low pressure cut-over valve comprises: the first cartridge valve (9), the second cartridge valve (10), the 3rd cartridge valve (11), the 4th cartridge valve (12), the 5th cartridge valve (13), the 6th cartridge valve (14) and the 3rd selector valve (15), described the first main working oil path (7) is connected to respectively the side direction hydraulic fluid port of described the first cartridge valve (9) and the side direction hydraulic fluid port of the second cartridge valve (10), the forward hydraulic fluid port of the forward hydraulic fluid port of described the first cartridge valve (9) and the second cartridge valve (10) is connected to respectively rodless cavity and the rod chamber of described the first pumping oil cylinder (1), the rodless cavity of described the first pumping oil cylinder (1) and rod chamber also separately correspondence be connected to the forward hydraulic fluid port of described the 3rd cartridge valve (11) and the forward hydraulic fluid port of described the 4th cartridge valve (12), the side direction hydraulic fluid port of the side direction hydraulic fluid port of described the 3rd cartridge valve (11) and described the 4th cartridge valve (12) separately correspondence is connected to rodless cavity and the rod chamber of described the second pumping oil cylinder (2), the rodless cavity of described the second pumping oil cylinder (2) and rod chamber also separately correspondence be connected to the forward hydraulic fluid port of described the 5th cartridge valve (13) and the forward hydraulic fluid port of described the 6th cartridge valve (14), the side direction hydraulic fluid port of the side direction hydraulic fluid port of described the 5th cartridge valve (13) and the 6th cartridge valve (14) is connected to respectively described the second main working oil path (8), first actuator port (A) of described the 3rd selector valve (15) respectively with described the second cartridge valve (10) spring chamber, the spring chamber of described the 3rd cartridge valve (11) is connected with the spring chamber of described the 6th cartridge valve (14), second actuator port (B) of described the 3rd selector valve (15) respectively with described the first cartridge valve (9) spring chamber, the spring chamber of described the 4th cartridge valve (12) is connected with the spring chamber of described the 5th cartridge valve (13), the filler opening (P) of described the 3rd selector valve (15) is connected with high low pressure switching controls oil feeding line, return opening (T) is connected to fuel tank, described the 3rd selector valve (15) can optionally switch to the first actuator port (A) conducting of the filler opening (P) Yu described the 3rd selector valve (15) that make described the 3rd selector valve (15), and the second actuator port (B) conducting of the return opening (T) of described the 3rd selector valve (15) and described the 3rd selector valve (15), or switch to the second actuator port (B) conducting of the filler opening (P) Yu described the 3rd selector valve (15) that make described the 3rd selector valve (15), and the first actuator port (A) conducting of the return opening (T) of described the 3rd selector valve (15) and described the 3rd selector valve (15), or switch to and make the filler opening (P) of described the 3rd selector valve (15) and first actuator port (A) of described the 3rd selector valve (15) and the second actuator port (B) conducting, and the return opening (T) of described the 3rd selector valve (15) disconnects with the first actuator port (A) and second actuator port (B) of described the 3rd selector valve (15).
7. hydraulic system of pump according to claim 6, is characterized in that, described the 3rd selector valve (15) is P type 3-position 4-way solenoid directional control valve.
8. a pumping equipment, is characterized in that, this pumping equipment comprises according to the hydraulic system of pump described in any one in claim 1 to 7.
9. pumping equipment according to claim 8, it is characterized in that, this pumping equipment comprises the first concrete conveying cylinder and the second concrete conveying cylinder, and the piston in described the first concrete conveying cylinder is connected with the piston rod of described the first pumping oil cylinder (1) and the piston rod of the second pumping oil cylinder (2) respectively with the piston in the second concrete conveying cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420408651.XU CN204003697U (en) | 2014-07-23 | 2014-07-23 | Pumping hydraulic system and pumping equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420408651.XU CN204003697U (en) | 2014-07-23 | 2014-07-23 | Pumping hydraulic system and pumping equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204003697U true CN204003697U (en) | 2014-12-10 |
Family
ID=52043704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420408651.XU Expired - Fee Related CN204003697U (en) | 2014-07-23 | 2014-07-23 | Pumping hydraulic system and pumping equipment |
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| CN (1) | CN204003697U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105689678A (en) * | 2016-03-18 | 2016-06-22 | 重庆瑞通实业有限公司 | Communicating type die-casting die vacuumizing control device |
| CN105697797A (en) * | 2016-03-18 | 2016-06-22 | 重庆瑞通实业有限公司 | Control valve for vacuumizing type die-casting die |
| CN105728688A (en) * | 2016-03-18 | 2016-07-06 | 重庆瑞通实业有限公司 | Vacuum valve air exhausting plate structure |
| CN105750522A (en) * | 2016-03-18 | 2016-07-13 | 重庆瑞通实业有限公司 | Double-cylinder for vacuumizing control |
| CN109812392A (en) * | 2019-02-21 | 2019-05-28 | 燕山大学 | A kind of superhigh pressure plunger pump |
| CN109958675A (en) * | 2019-03-01 | 2019-07-02 | 北汽福田汽车股份有限公司 | Concrete pumping equipment and its hydraulic control system |
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2014
- 2014-07-23 CN CN201420408651.XU patent/CN204003697U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105689678A (en) * | 2016-03-18 | 2016-06-22 | 重庆瑞通实业有限公司 | Communicating type die-casting die vacuumizing control device |
| CN105697797A (en) * | 2016-03-18 | 2016-06-22 | 重庆瑞通实业有限公司 | Control valve for vacuumizing type die-casting die |
| CN105728688A (en) * | 2016-03-18 | 2016-07-06 | 重庆瑞通实业有限公司 | Vacuum valve air exhausting plate structure |
| CN105750522A (en) * | 2016-03-18 | 2016-07-13 | 重庆瑞通实业有限公司 | Double-cylinder for vacuumizing control |
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| CN105728688B (en) * | 2016-03-18 | 2018-12-11 | 重庆瑞通实业有限公司 | Vacuum valve evacuating plate structure |
| CN105750522B (en) * | 2016-03-18 | 2018-12-11 | 重庆瑞通实业有限公司 | For vacuumizing double oil cylinders of control |
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| CN109812392A (en) * | 2019-02-21 | 2019-05-28 | 燕山大学 | A kind of superhigh pressure plunger pump |
| CN109812392B (en) * | 2019-02-21 | 2020-03-31 | 燕山大学 | Novel ultrahigh pressure plunger pump |
| CN109958675A (en) * | 2019-03-01 | 2019-07-02 | 北汽福田汽车股份有限公司 | Concrete pumping equipment and its hydraulic control system |
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