CN215444560U - Pumping hydraulic system and pumping equipment - Google Patents
Pumping hydraulic system and pumping equipment Download PDFInfo
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- CN215444560U CN215444560U CN202120700575.XU CN202120700575U CN215444560U CN 215444560 U CN215444560 U CN 215444560U CN 202120700575 U CN202120700575 U CN 202120700575U CN 215444560 U CN215444560 U CN 215444560U
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Abstract
The utility model discloses a pumping hydraulic system, which comprises a first hydraulic pump driven by a first power source, a second hydraulic pump driven by a second power source, a main oil cylinder group, a swing valve oil cylinder group, a stirring motor, an oil tank, a main valve group and a swing auxiliary valve group, wherein the main oil cylinder group is connected to the first hydraulic pump and the oil tank through the main valve group, and the swing valve oil cylinder group and the stirring motor are connected to the second hydraulic pump and the oil tank through the swing auxiliary valve group. The main system of the utility model adopts an independent pump source, and the oscillating cylinder system and the stirring system supply oil through the same oil source. After the oscillating cylinder system and the stirring system share the oil source, the pump source is saved, and meanwhile, the main system and the oscillating cylinder system do not interfere with each other in work, so that the pressure of the oscillating cylinder system does not need to be designed according to the pressure of the main system, the service life of elements is long, the reliability is high, the oil return impact is small, and the radiator is not easy to burst; and no additional elements such as a sequence valve, a pressure reducing valve and the like are needed, so that the system is simpler and the cost is reduced.
Description
Technical Field
The utility model belongs to the technical field of engineering machinery, and particularly relates to a pumping hydraulic system and pumping equipment for a concrete delivery pump.
Background
Concrete pump such as concrete trailer pump or concrete vehicle pump or mortar pump etc. generally are through the drive of pump sending hydraulic system, and pump sending hydraulic system comprises main system, tilt cylinder system and mixing system, and pump sending system and valves are very extensive in concrete and wet blasting field application, and its main function is the action of realizing master cylinder, tilt valve hydro-cylinder and agitator motor, and the realization mode is various, and the pump sending hydraulic system of current realization pump sending function, technical scheme mainly has following two kinds of modes: 1. the main oil cylinder, the swing valve oil cylinder and the stirring motor are respectively supplied with oil through independent pump sources, and the three groups of actions are independent; 2. the main oil cylinder and the swing valve oil cylinder are integrally supplied with oil through one pump source, and the stirring motor adopts an independent pump source.
In the technical scheme 1, each group of actions needs an independent pump source for driving, so that the pump group occupies a large space and has high overall cost; in the technical scheme 2, the pump sources of the main oil cylinder and the swing valve oil cylinder are the same, although one group of pump sources are saved, the system has larger reversing impact due to larger pressure and flow difference required between the main oil cylinder and the swing valve oil cylinder, the highest service pressure of a general main system is about 2 times that of a swing cylinder system, after the main oil cylinder and the swing valve oil cylinder share the oil source, the pressure of the swing cylinder system also needs to be designed according to the system pressure of the main oil cylinder, and the technical scheme has larger influence on the service life of elements and has low reliability. In addition, the main oil cylinder is in a continuous motion mode, the swing valve oil cylinder is in an intermittent motion mode, continuous oil supply needs to be carried out through a pump source in the motion process of the main oil cylinder, the swing valve oil cylinder only supplies oil at the tail end of the stroke of the main oil cylinder, and the system is subjected to pressure building in the reversing process of the main oil cylinder in a motion matching mode to generate large impact. In addition, in order to ensure the action sequence between the main oil cylinder and the swing valve oil cylinder, elements such as a sequence valve and a pressure reducing valve are often additionally arranged in the system for ensuring, so that the cost is increased, and the system is more complicated. The pumping system generally dissipates heat through the main system return oil, but the main system is subject to high impact and is prone to bursting the radiator.
Therefore, it is necessary to design a pumping hydraulic system and a valve bank which can meet the requirements of high space utilization rate, high cost performance, low impact, high reliability and the like.
SUMMERY OF THE UTILITY MODEL
To solve at least one of the above technical problems, the present invention provides a pumping hydraulic system and a pumping apparatus.
The purpose of the utility model is realized by the following technical scheme:
in one aspect, the utility model provides a pumping hydraulic system, which comprises a first hydraulic pump driven by a first power source, a second hydraulic pump driven by a second power source, a main oil cylinder group, a swing valve oil cylinder group, a stirring motor and an oil tank, and further comprises a main valve group and a swing auxiliary valve group, wherein the main oil cylinder group is connected to the first hydraulic pump and the oil tank through the main valve group, and the swing valve oil cylinder group and the stirring motor are connected to the second hydraulic pump and the oil tank through the swing auxiliary valve group.
As a further improvement, the valve group is assisted to the pendulum includes tilt cylinder switching-over valve, stirring switching-over valve, three-way flow valve is provided with entry and first export and second export, entry and the exit linkage of second hydraulic pump, first export and second export respectively with tilt cylinder switching-over valve, stirring switching-over valve are connected.
As a further improvement, the auxiliary valve group comprises a second overflow valve arranged between the second outlet and the oil tank.
As a further improvement, the auxiliary valve group is provided with an unloading electromagnetic valve connected between the second hydraulic pump and the oil tank.
As a further improvement, the auxiliary swing valve group further comprises a third overflow valve connected between the second hydraulic pump and the oil tank.
As a further improvement, the swing auxiliary valve group further comprises a one-way valve connected between the second outlet and the swing cylinder reversing valve, and an energy accumulator is connected between the one-way valve and the swing auxiliary valve group.
As a further improvement, a radiator is arranged on an oil path between the main valve group and the oil tank.
As a further improvement, the main valve group is provided with a first overflow valve between the outlet of the first hydraulic pump and the oil tank.
The utility model provides a pumping hydraulic system which comprises a first hydraulic pump driven by a first power source, a second hydraulic pump driven by a second power source, a main oil cylinder group, a swing valve oil cylinder group, a stirring motor and an oil tank, and further comprises a main valve group and a swing auxiliary valve group, wherein the main oil cylinder group is connected to the first hydraulic pump and the oil tank through the main valve group, and the swing valve oil cylinder group and the stirring motor are connected to the second hydraulic pump and the oil tank through the swing auxiliary valve group.
The pumping hydraulic system provided by the utility model has the following beneficial effects:
firstly, in a pumping hydraulic system, a main system, namely a main oil cylinder group, adopts an independent pump source, and a tilt cylinder system, namely a tilt valve oil cylinder group, and a stirring system, namely a stirring motor supply oil through the same oil source. After the tilt cylinder system and the stirring system share the oil source, the pump source is saved, and meanwhile, the work of the main system and the tilt cylinder system is not interfered with each other, so that the pressure of the tilt cylinder system does not need to be designed according to the system pressure of the main system, the service life of elements is longer, and the reliability is higher;
secondly, the main system and the tilt cylinder system do not interfere with each other, the main cylinder is in a continuous motion mode, the tilt valve cylinder is in an intermittent motion mode, continuous oil supply is needed through a pump source in the motion process of the main cylinder, the tilt valve cylinder only supplies oil at the tail end of the stroke of the main cylinder, and the tilt cylinder system does not need to be suppressed in the reversing process of the main system due to the action matching mode of the main cylinder and the tilt cylinder system, so that great impact is not generated.
And the main system and the tilt cylinder system do not interfere with each other, and elements such as a sequence valve and a pressure reducing valve are not required to be additionally arranged for ensuring, so that the system is simpler, and the cost is also reduced.
And finally, the hydraulic oil of the pumping system is radiated through the return oil of the main system, and due to the independent design of the main system, the return oil has small impact, the radiator is not easy to be exploded, and the use cost is low.
In another aspect, the present invention provides a pumping device, wherein the pumping device is a concrete pump truck, a concrete trailer pump, a concrete truck-mounted pump, or a mortar pump. The pumping apparatus is provided with any of the pumping hydraulic systems described above. The pumping equipment provided by the utility model is provided with the pumping hydraulic system, so that the pumping equipment has corresponding beneficial effects, and further description is omitted.
Drawings
The utility model is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the utility model, and for a person skilled in the art, other drawings can be obtained on the basis of the following drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a pumping hydraulic system of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings and specific embodiments, and it is to be noted that the embodiments and features of the embodiments of the present application can be combined with each other without conflict.
Referring to fig. 1, an embodiment of the present invention provides a pumping hydraulic system including a first hydraulic pump 2 driven by a first power source 1, a second hydraulic pump 4 driven by a second power source 3, a main cylinder group 5, a swing valve cylinder group 6, a stirring motor 7, and an oil tank 8. The first power source 1 and the second power source 3 may be motors or fuel engines, and the first hydraulic pump 2 and the second hydraulic pump 4 may be fixed displacement pumps or variable displacement pumps such as gear pumps or plunger pumps. The main oil cylinder group 5 comprises a left main oil cylinder and a right main oil cylinder, and the swing valve oil cylinder group 6 comprises a left swing cylinder and a right swing cylinder, and further comprises a main valve group 9, a swing auxiliary valve group 10 and a stirring reversing valve 102; the main cylinder group 5 is connected to the first hydraulic pump 1 and the oil tank 8 through the main valve group 9, the main valve group 9 includes a first relief valve 91 and a main directional control valve 92, and the first relief valve 91 is disposed between the outlet of the first hydraulic pump 2 and the oil tank 8.
The swing valve oil cylinder group 6 is connected to the second hydraulic pump 4 and the oil tank 8 through a swing auxiliary valve group 10, and the swing auxiliary valve group 10 comprises a stirring reversing valve 102, a three-way flow valve 103, an overflow valve 104, an unloading electromagnetic valve 105, an overflow valve 106, a swing cylinder reversing valve 101 and a one-way valve 107. The three-way flow valve 103 is a flow distribution valve, which can distribute and adjust the flow according to the system requirement, and the three-way flow valve 103 distributes the pressure oil to the stirring system and the tilt cylinder system respectively. The agitation changeover valve 102 is used to switch between normal rotation and reverse rotation of the agitation motor. The swing cylinder reversing valve 101 is used for controlling the swing cylinder group 4 to reverse. The stirring motor 7 is connected to the second hydraulic pump 4 and the oil tank 8 through a stirring reversing valve 102 of the auxiliary valve swing group 10; wherein first power supply 1 drives first hydraulic pump 2, supplies oil to main valve group 9, and wherein second power supply 3 drives second hydraulic pump 4, supplies oil simultaneously to pendulum auxiliary valve group 10, stirring switching-over valve 102. The main valve group 9 includes an overflow valve for protecting the main system, a reversing valve for supplying pressure oil to the left main cylinder and the right main cylinder of the main cylinder group 5, respectively, so as to realize the reciprocating motion of the left main cylinder and the right main cylinder.
The pumping hydraulic system provided by the embodiment of the utility model has the following beneficial effects: the main system, namely the main oil cylinder group 5 and the main valve group 9 adopt independent pump sources, the swing cylinder system, namely the swing valve oil cylinder group 6, the swing auxiliary valve group 10, the stirring system, namely the stirring motor 7 and the stirring reversing valve 102, supply oil through the same oil source, the highest using pressure of the swing cylinder system and the stirring system is close, the flow required by each is stable, the system is easy to realize stable flow distribution, and the system is relatively simple and reliable in design and simple in maintenance. The oscillating cylinder system and the stirring system share an oil source, and the whole hydraulic system only needs 2 groups of pump sources, so that the space utilization rate is high, and the cost is reduced. After the tilt cylinder system and the stirring system share the oil source, the pressure of the tilt cylinder system does not need to be designed according to the system pressure of the main system, so that the service life of elements is long, and the reliability is high; secondly, the main system and the tilt cylinder system do not interfere with each other, the main cylinder is in a continuous motion mode, the tilt valve cylinder is in an intermittent motion mode, continuous oil supply is needed through a pump source in the motion process of the main cylinder, the tilt valve cylinder only supplies oil at the tail end of the stroke of the main cylinder, and the tilt cylinder system does not need to be suppressed in the reversing process of the main system due to the action matching mode of the main cylinder and the tilt cylinder system, so that great impact is not generated. And the main system and the tilt cylinder system do not interfere with each other, and elements such as a sequence valve and a pressure reducing valve are not required to be additionally arranged for ensuring, so that the system is simpler, and the cost is also reduced. And finally, the hydraulic oil of the pumping system is radiated through the return oil of the main system, the return oil has small impact, and the radiator is not easy to be exploded.
As a further preferred embodiment, the three-way flow valve 103 is provided with an inlet connected to the outlet of the second hydraulic pump, and a first outlet and a second outlet connected to the tilt cylinder change valve 101 and the agitation change valve 102, respectively.
In a further preferred embodiment, the second relief valve 104 is provided between the second outlet of the three-way flow valve 103 and the tank. The second overflow valve 104 is used to protect the stirring system and ensure that the driving pressure of the stirring motor 7 does not exceed the highest bearing pressure of the motor.
As a further preferred embodiment, the unloading solenoid valve 105 is connected between the second hydraulic pump 4 and the tank 8. When the unloading electromagnetic valve 105 is not powered, the system can run under lower pressure, on one hand, the second power source 3 can be started under low load, and on the other hand, the system can save energy under idle running. When the unloading electromagnetic valve 105 is electrified, the system can be loaded, and pressure oil enters the inlet of the three-way flow valve 103.
In a further preferred embodiment, the third relief valve 106 is connected between the second hydraulic pump 4 and the tank 8. The third overflow valve 106 is used for protecting the tilt cylinder and the stirring system and preventing the system pressure from being too high.
In a further preferred embodiment, the check valve 107 is connected between the second outlet of the three-way flow valve 103 and the tilt cylinder reversing valve 101, and the accumulator 17 is connected between the check valve 107 and the auxiliary valve group 10.
In a further preferred embodiment, a radiator 11 is provided in an oil path between the main valve group 9 and the tank 8. Because the main system is independently designed, the oil return impact is small, the radiator 11 is arranged on an oil return path of the main system, the oil return impact of the system does not need to be considered in the design of the radiating system, the radiator is simple and reliable, the radiator is not easy to explode, and the use cost is low.
As a further preferred embodiment, the main valve block 9 is provided with a first relief valve 91 between the outlet of the first hydraulic pump 2 and the tank 8. The first relief valve 91 serves to protect the first hydraulic pump 2 and to avoid the main system pressure from being too high.
In another aspect, the utility model provides pumping equipment provided with any one of the pumping hydraulic systems, wherein the pumping equipment is a concrete pump truck or a concrete trailer pump or a concrete vehicle-mounted pump or a mortar pump.
In the description above, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore should not be construed as limiting the scope of the present invention.
In conclusion, although the present invention has been described with reference to the preferred embodiments, it should be noted that various changes and modifications can be made by those skilled in the art, and they should be included in the scope of the present invention unless they depart from the scope of the present invention.
Claims (10)
1. The utility model provides a pump sending hydraulic system, includes first hydraulic pump (2) by first power supply (1) driven, second hydraulic pump (4) by second power supply (3) driven, master cylinder group (5), pendulum valve hydro-cylinder group (6), agitator motor (7), oil tank (8), its characterized in that: still include main valve group (9), pendulum and assist valves (10), main hydro-cylinder group (5) are passed through main valve group (9) are connected to first hydraulic pump (1) and oil tank (8), pendulum valve hydro-cylinder group (6), agitator motor (7) are connected to second hydraulic pump (4) and oil tank (8) through pendulum and assist valves (10).
2. The pumped hydraulic system of claim 1, wherein: valve group (10) are assisted including tilt cylinder switching-over valve (101), stirring switching-over valve (102), three-way flow valve (103) are provided with entry and first export and second export, the exit linkage of entry and second hydraulic pump (4), first export and second export are connected with tilt cylinder switching-over valve (101), stirring switching-over valve (102) respectively.
3. The pumped hydraulic system of claim 2, wherein: the auxiliary swing valve group (10) comprises a second overflow valve (104) arranged between a second outlet and the oil tank (8).
4. The pumped hydraulic system of claim 2, wherein: the auxiliary swing valve group (10) is provided with an unloading electromagnetic valve (105) connected between the second hydraulic pump (4) and the oil tank (8).
5. The pumped hydraulic system of claim 4, wherein: the auxiliary swing valve group (10) further comprises a third overflow valve (106) connected between the second hydraulic pump (4) and the oil tank (8).
6. The pumped hydraulic system of claim 2, wherein: the swing auxiliary valve group (10) further comprises a check valve (107) connected between the second outlet and the swing cylinder reversing valve (101), and an energy accumulator (17) is connected between the check valve (107) and the swing auxiliary valve group (10).
7. The pumped hydraulic system of any one of claims 1-6, wherein: and a radiator (11) is arranged on an oil path between the main valve group (9) and the oil tank (8).
8. The pumped hydraulic system of claim 1, wherein: the main valve group (9) is provided with a first overflow valve (91) between the outlet of the first hydraulic pump (2) and the oil tank (8).
9. A pumping arrangement, characterized in that a pumping hydraulic system according to any one of claims 1 to 8 is provided.
10. The pumping apparatus of claim 9, wherein: the pumping equipment is a concrete pump truck or a concrete trailer pump or a concrete vehicle-mounted pump or a mortar pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120700575.XU CN215444560U (en) | 2021-04-07 | 2021-04-07 | Pumping hydraulic system and pumping equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120700575.XU CN215444560U (en) | 2021-04-07 | 2021-04-07 | Pumping hydraulic system and pumping equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215444560U true CN215444560U (en) | 2022-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120700575.XU Active CN215444560U (en) | 2021-04-07 | 2021-04-07 | Pumping hydraulic system and pumping equipment |
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| Country | Link |
|---|---|
| CN (1) | CN215444560U (en) |
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2021
- 2021-04-07 CN CN202120700575.XU patent/CN215444560U/en active Active
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