CN220566330U - Hydraulic system for energy recovery and release and working machine - Google Patents
Hydraulic system for energy recovery and release and working machine Download PDFInfo
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- CN220566330U CN220566330U CN202321797048.0U CN202321797048U CN220566330U CN 220566330 U CN220566330 U CN 220566330U CN 202321797048 U CN202321797048 U CN 202321797048U CN 220566330 U CN220566330 U CN 220566330U
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- 238000011084 recovery Methods 0.000 title claims abstract description 23
- 239000003921 oil Substances 0.000 claims abstract description 105
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 47
- 230000000712 assembly Effects 0.000 claims description 8
- 238000000429 assembly Methods 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 8
- 230000005484 gravity Effects 0.000 description 4
- 239000010727 cylinder oil Substances 0.000 description 3
- 239000000446 fuel Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of hydraulic systems of working machines. The utility model provides a hydraulic system for energy recovery and release and a working machine, comprising: the device comprises an oil tank, an energy accumulator and an oil cylinder assembly; the oil cylinder assembly comprises an oil cylinder and a main valve; the large cavity of the oil cylinder is respectively communicated with the energy accumulator and the oil tank; the small cavity of the oil cylinder is respectively communicated with the energy accumulator and the oil tank; the main valve is arranged on a pipeline for communicating the energy accumulator with the oil tank; the main valve controls the flow direction of hydraulic oil in the oil cylinder. According to the utility model, the energy accumulator is communicated with the oil cylinder assembly by arranging the energy accumulator, so that not only can the surplus energy in the oil cylinder assembly be recovered, but also the energy can be released into the oil cylinder assembly, the hydraulic oil consumption of the hydraulic system is reduced, and the operation cost of the hydraulic system is reduced.
Description
Technical Field
The utility model relates to the technical field of hydraulic systems of working machines, in particular to a hydraulic system for recovering and releasing energy and a working machine.
Background
The market competition of working machines is increasingly strong, and cost control becomes an important means for improving the competitiveness of products. The hydraulic system is used as the core of the working machine, and if the fuel consumption of the hydraulic system can be reduced, the cost of the working machine can be obviously greatly reduced.
When the working device of the working machine is in the process from the completion of the action to the next action, hydraulic oil with pressure exists in the oil cylinder of the working device under the action of gravity, and the hydraulic oil is wasted by direct oil return. The recovery of energy from the hydraulic oil can reduce fuel consumption and thus cost, and how to recover energy from the hydraulic oil is an urgent problem to be solved by those skilled in the art.
Disclosure of Invention
The utility model provides a hydraulic system for recovering and releasing energy and an operation machine, which are used for solving the defect that the energy in hydraulic oil is wasted when the hydraulic system acts in the same direction as gravity in the prior art and realizing the technical effect of recovering and utilizing the energy in the hydraulic pressure.
In a first aspect, the present utility model provides an energy recovery and release hydraulic system comprising: the device comprises an oil tank, an energy accumulator and an oil cylinder assembly;
the oil cylinder assembly comprises an oil cylinder and a main valve;
the large cavity of the oil cylinder is respectively communicated with the energy accumulator and the oil tank;
the small cavity of the oil cylinder is respectively communicated with the energy accumulator and the oil tank;
the main valve is arranged on a pipeline for communicating the energy accumulator with the oil tank;
the main valve controls the flow direction of hydraulic oil in the oil cylinder.
According to the hydraulic system for energy recovery and release provided by the utility model, the oil cylinder assembly comprises: a first valve block and a second valve block;
the first valve group is arranged on a pipeline which is communicated with the large cavity of the oil cylinder and used for recovering or releasing energy;
the second valve group is arranged on a pipeline which is communicated with the small cavity of the oil cylinder and used for recovering or releasing energy.
According to the hydraulic system for energy recovery and release provided by the utility model, the first valve group comprises: the electromagnetic one-way valve is arranged on a pipeline which is communicated with the large cavity of the oil cylinder and used for recovering energy from the large cavity of the oil cylinder;
the second valve group includes: the electric proportional valve and the one-way valve are arranged on a pipeline which is communicated with the small cavity of the oil cylinder through the energy accumulator and used for releasing energy to the small cavity of the oil cylinder.
According to the hydraulic system for energy recovery and release provided by the utility model, the first valve group comprises: the electric proportional valve and the one-way valve are arranged on a pipeline which is communicated with the large cavity of the oil cylinder through the energy accumulator and used for recovering energy from the large cavity of the oil cylinder;
the second valve group includes: the electromagnetic one-way valve is arranged on a pipeline of the energy accumulator communicated with the small cavity of the oil cylinder and used for releasing energy to the small cavity of the oil cylinder.
According to the hydraulic system for energy recovery and release provided by the utility model, the oil cylinder assembly further comprises: the pilot valve is respectively communicated with the oil tank and the main valve and is used for controlling the operation of the main valve.
The hydraulic system for recovering and releasing energy provided by the utility model further comprises: a pilot pump and a main pump;
the pilot pump and the main pump are coaxially arranged;
the pilot pump is arranged on a communicating pipeline between the pilot valve and the oil tank;
the main pump is arranged on the communicating pipe of the main valve and the oil tank.
The hydraulic system for recovering and releasing energy provided by the utility model further comprises: the first pressure sensor is arranged on a communicating pipeline of the oil cylinder and the main valve.
In a second aspect, the present utility model also provides a work machine comprising a hydraulic system for energy recovery and release as described above.
The work machine provided by the utility model further comprises: and the second pressure sensor is arranged on a communicating pipeline of the oil cylinder assembly and the energy accumulator.
The working machine at least comprises two groups of oil cylinder assemblies, wherein the oil cylinder of the oil cylinder assemblies is any one or the combination of a plurality of movable arm oil cylinders, bucket oil cylinders and bucket rod oil cylinders.
According to the hydraulic system for recovering and releasing energy, the energy accumulator is communicated with the oil cylinder assembly by arranging the energy accumulator, so that not only can the surplus energy in the oil cylinder assembly be recovered, but also the energy can be released into the oil cylinder assembly, the consumption of hydraulic oil of the hydraulic system is reduced, and the running cost of the hydraulic system is reduced.
Further, the working machine provided by the utility model has the advantages as described above due to the hydraulic system for recovering and releasing the energy.
Drawings
In order to more clearly illustrate the utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration of a hydraulic system for energy recovery and release provided by the present utility model;
FIG. 2 is a schematic illustration of one embodiment of a hydraulic system for energy recovery and release provided by the present utility model;
FIG. 3 is a schematic illustration of another embodiment of the energy recovery and release hydraulic system provided by the present utility model;
fig. 4 is a schematic illustration of a hydraulic system for energy recovery and release of a work machine provided by the present disclosure.
Reference numerals:
10: an oil tank; 12: an accumulator; 14: an oil cylinder assembly; 142: an oil cylinder; 144: a main valve; 146: a first valve block; 148: a second valve block; 16: a pilot valve; 18: a pilot pump; 20: a main pump; 22: a first pressure sensor; 24: and a second pressure sensor.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In describing embodiments of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present utility model will be understood in detail by those of ordinary skill in the art.
In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
Embodiments of the present utility model are described in further detail below in conjunction with fig. 1-4. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.
In a first aspect, as shown in fig. 1, the present utility model provides an energy recovery and release hydraulic system comprising: a fuel tank 10, an accumulator 12, and a ram assembly 14. The oil tank 10 is filled with hydraulic oil, the oil tank 10 is communicated with the oil cylinder assembly 14, the hydraulic oil is provided for the oil cylinder assembly 14, the energy accumulator 12 is communicated with the oil cylinder assembly 14, the energy accumulator 12 can recover energy from the oil cylinder assembly 14 when the operation device acts in the same direction with gravity, and the energy accumulator 12 can release energy into the oil cylinder assembly 14 when the pressure in the oil cylinder assembly 14 is insufficient.
With continued reference to fig. 1, in the embodiment described above, the ram assembly 14 includes: cylinder 142, main valve 144, first valve block 146, and second valve block 148. The cylinder 142 includes a large chamber and a small chamber, which communicate with the oil tank 10 through a main valve 144, and which communicate with the accumulator 12, respectively. The operation states of the main valve 144 include left, middle and right positions, and when the main valve 144 is left, hydraulic oil enters from the large cavity and returns from the small cavity; when the main valve 144 is the middle position, the oil tank 10 is not communicated with the oil cylinder 142; when the main valve 144 is in the right position, hydraulic oil enters from the small chamber and returns from the large chamber. The first valve group 146 is disposed on a pipeline of the accumulator 12 communicating with the large cavity of the cylinder 142, and the second valve group 148 is disposed on a pipeline of the accumulator 12 communicating with the small cavity of the cylinder 142, for recovering or releasing energy.
In practice, the energy store 12 is only opened when the working device is moved in the same direction as the force of gravity. Specifically, if the working device is a boom device and the cylinder 142 is a boom cylinder, the accumulator 12 recovers hydraulic oil from the large chamber to recover energy or releases hydraulic oil to the small chamber to release energy only when the boom is lowered, that is, hydraulic oil in the boom cylinder enters from the small chamber and flows out from the large chamber. If the working device is a stick device, the cylinder 142 is a stick cylinder, and only when the stick is in, that is, when hydraulic oil in the stick cylinder enters from the large chamber and flows out from the small chamber, the accumulator 12 recovers the hydraulic oil from the small chamber to recover energy, or releases the hydraulic oil to the large chamber to release energy. If the working device is a bucket device, the same is true for the arm device.
Further, in the embodiment described above, further comprising: and a pilot valve 16. As shown in fig. 2, taking the boom apparatus as an example, the large chamber of the pilot valve 16 communicates with the left position of the main valve 144 and the tank 10, respectively, and the small chamber of the pilot valve 16 communicates with the right position of the main valve 144 and the tank 10, respectively. By controlling the hydraulic oil to enter the large cavity of the pilot valve 16, the operation state of the main valve 144 is controlled to be left, and at the moment, the hydraulic oil enters from the large cavity and flows out from the small cavity; the hydraulic oil is controlled to enter the small cavity of the pilot valve 16, and then the operation state of the main valve 144 is controlled to be right, and at the moment, the hydraulic oil enters from the small cavity and flows out from the large cavity.
As shown in fig. 3, taking an example of a bucket lever device or a bucket device, the large chamber of the pilot valve 16 communicates with the right position of the main valve 144 and the tank 10, respectively, and the small chamber of the pilot valve 16 communicates with the left position of the main valve 144 and the tank 10, respectively. By controlling the hydraulic oil to enter the large cavity of the pilot valve 16, the operation state of the main valve 144 is controlled to be right, and at the moment, the hydraulic oil enters from the large cavity and flows out from the small cavity; the hydraulic oil is controlled to enter the small cavity of the pilot valve 16, and then the operation state of the main valve 144 is controlled to be left, and at the moment, the hydraulic oil enters from the small cavity and flows out from the large cavity.
With continued reference to fig. 2, in an alternative embodiment provided by the present utility model, the ram 142 of fig. 2 is a boom ram. The large cavity of the movable arm cylinder is respectively communicated with the accumulator 12 and the main valve 144, and the electromagnetic one-way valve is arranged on a pipeline for communicating the accumulator 12 with the large cavity of the movable arm cylinder, and hydraulic oil on the pipeline can flow into the accumulator 12 from the large cavity. The electro-proportional valve and the check valve are disposed on a line of the accumulator 12 communicating with the small chamber of the boom cylinder, where hydraulic oil can flow from the accumulator 12 into the small chamber.
In practical application, when the movable arm is lowered and the energy is more, the main valve 144 is positioned at the right position, the electromagnetic one-way valve is opened, the electric proportional valve and the one-way valve are closed, hydraulic oil flows through the main valve 144 from the oil tank 10 to enter the small cavity, one part of hydraulic oil in the large cavity flows through the main valve 144 to return to the oil tank 10, and the other part flows through the electromagnetic one-way valve to enter the energy accumulator 12, so that the extra energy is stored in the energy accumulator 12. When the movable arm descends and the energy is insufficient, the main valve 144 is positioned at the right position, the electric proportional valve and the one-way valve are opened, the electromagnetic one-way valve is closed, a part of hydraulic oil flows through the main valve 144 from the oil tank 10 to enter the small cavity, and the other part of hydraulic oil flows through the electric proportional valve and the one-way valve from the energy accumulator 12 to enter the small cavity, so that the stored energy is released into the small cavity. Hydraulic oil in the large chamber flows through the main valve 144 back to the tank 10.
With continued reference to FIG. 3, in another alternative embodiment provided by the present utility model, the cylinder 142 in FIG. 3 is a bucket cylinder. The large cavity of the bucket cylinder is respectively communicated with the accumulator 12 and the main valve 144, and the electric proportional valve and the one-way valve are arranged on a pipeline on which the accumulator 12 is communicated with the large cavity of the bucket cylinder, and hydraulic oil on the pipeline can flow into the large cavity from the accumulator 12. The electromagnetic one-way valve is arranged on a pipeline of the energy accumulator 12 communicated with the small cavity of the bucket cylinder, and hydraulic oil on the pipeline can flow into the energy accumulator 12 from the small cavity.
In practical application, when the bucket is retracted and the energy is more, the main valve 144 is positioned at the right position, the electromagnetic one-way valve is opened, the electric proportional valve and the one-way valve are closed, hydraulic oil flows through the main valve 144 from the oil tank 10 to enter the large cavity, one part of hydraulic oil in the small cavity flows through the main valve 144 to return to the oil tank 10, and the other part flows through the electromagnetic one-way valve to enter the energy accumulator 12, so that the extra energy is stored in the energy accumulator 12. When the bucket is retracted and the energy is insufficient, the main valve 144 is positioned at the right position, the electric proportional valve and the one-way valve are opened, the electromagnetic one-way valve is closed, a part of hydraulic oil flows through the main valve 144 from the oil tank 10 to enter the large cavity, and the other part of hydraulic oil flows through the electric proportional valve and the one-way valve from the energy accumulator 12 to enter the large cavity, so that the stored energy is released into the large cavity. The small volume of hydraulic oil flows through the main valve 144 back to the tank 10. The bucket rod oil cylinder and the bucket oil cylinder are the same.
Optionally, the hydraulic system for recovering and releasing energy provided by the utility model further comprises: a pilot pump 18 and a main pump 20. The pilot pump 18 and the main pump 20 are coaxially arranged, and the pilot pump 18 is arranged on a communication pipeline between the pilot valve 16 and the oil tank 10 and is used for providing hydraulic oil for the pilot valve 16; the main pump 20 is provided on a communication line between the main valve 144 and the tank 10, and supplies hydraulic oil to the main valve 144.
Optionally, the hydraulic system for recovering and releasing energy provided by the utility model further comprises: a first pressure sensor 22. The first pressure sensor 22 is provided on communication lines of the cylinder 142 and the main valve 144, respectively, for detecting the pressure of hydraulic oil entering the cylinder 142 and the pressure of hydraulic oil exiting the cylinder 142.
In a second aspect, the present utility model also provides a work machine comprising a hydraulic system for energy recovery and release as described above.
In the embodiment described above, further comprising: a second pressure sensor 24. The second pressure sensor 24 is disposed on the communication pipeline between the cylinder assembly 14 and the accumulator 12, and is configured to detect the pressure stored in the accumulator 12.
In an alternative embodiment, as shown in fig. 4, the present disclosure provides for a work machine including a boom assembly 14, an arm assembly 14, and a bucket assembly 14. In practical application, the cylinder assembly 14 can be increased, decreased and changed according to practical conditions. Generally, the work machine includes at least two sets of cylinder assemblies 14, and the cylinders 142 of the cylinder assemblies 14 may be any one or a combination of a boom cylinder, a bucket cylinder, and an arm cylinder. The respective cylinder assemblies 14 are independent of each other, and the accumulator 12 can release energy to the cylinder assembly 14 with insufficient energy while recovering energy from one or more of the cylinder assemblies 14 with excess energy.
According to the utility model, the energy accumulator 12 is arranged and communicated with the oil cylinder assembly 14, so that not only can the surplus energy in the oil cylinder assembly 14 be recovered, but also the energy can be released into the oil cylinder assembly 14, the consumption of hydraulic oil of a hydraulic system is reduced, and the running cost of the hydraulic system is reduced. According to the utility model, the first valve group 146 is arranged on the large cavity of the oil cylinder 142 and the pipeline of the energy accumulator 12, the second valve group 148 is arranged on the small cavity of the oil cylinder 142 and the pipeline of the energy accumulator 12, energy is recovered from the oil return side, and the energy is provided for the oil inlet side, so that the energy recovery and utilization are realized.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (8)
1. An energy recovery and release hydraulic system, comprising: an oil tank (10), an accumulator (12) and an oil cylinder assembly (14);
the oil cylinder assembly comprises an oil cylinder (142) and a main valve (144);
the large cavity of the oil cylinder (142) is respectively communicated with the energy accumulator (12) and the oil tank (10); the small cavity of the oil cylinder (142) is respectively communicated with the energy accumulator (12) and the oil tank (10); the main valve (144) is arranged on a pipeline for communicating the energy accumulator (12) and the oil tank (10); wherein, the main valve (144) controls the flow direction of hydraulic oil in the oil cylinder (142);
the cylinder assembly (14) further comprises: a first valve block (146) and a second valve block (148); the first valve group (146) is arranged on a pipeline which is communicated with the large cavity of the oil cylinder (142) and used for recovering or releasing energy; the second valve group (148) is arranged on a pipeline which is communicated with the small cavity of the oil cylinder (142) and is used for recovering or releasing energy;
the first valve block (146) comprises: the electromagnetic one-way valve is arranged on a pipeline of the energy accumulator (12) communicated with the large cavity of the oil cylinder (142) and is used for recovering energy from the large cavity of the oil cylinder (142); the second valve block (148) comprises: the electric proportional valve and the one-way valve are arranged on a pipeline of the energy accumulator (12) communicated with the small cavity of the oil cylinder (142) and used for releasing energy to the small cavity of the oil cylinder (142).
2. The energy recovery and release hydraulic system of claim 1, wherein the first valve block (146) includes: the electric proportional valve and the one-way valve are arranged on a pipeline of the energy accumulator (12) communicated with the large cavity of the oil cylinder (142) and are used for recovering energy from the large cavity of the oil cylinder (142);
the second valve block (148) comprises: the electromagnetic one-way valve is arranged on a pipeline of the energy accumulator (12) communicated with the small cavity of the oil cylinder (142) and used for releasing energy to the small cavity of the oil cylinder (142).
3. The energy recovery and release hydraulic system according to claim 1, wherein the ram assembly (14) further comprises: -a pilot valve (16), said pilot valve (16) being in communication with said tank (10) and with said main valve (144), respectively, for controlling the operation of said main valve (144).
4. The energy recovery and release hydraulic system of claim 3, further comprising: a pilot pump (18) and a main pump (20);
the pilot pump (18) and the main pump (20) are coaxially arranged;
the pilot pump (18) is arranged on a communication pipeline between the pilot valve (16) and the oil tank (10);
the main pump (20) is provided on the communication pipe between the main valve (144) and the oil tank (10).
5. The energy recovery and release hydraulic system of any one of claims 1 to 4, further comprising: and a first pressure sensor (22), wherein the first pressure sensor (22) is arranged on a communication pipeline between the oil cylinder (142) and the main valve (144).
6. A work machine comprising the hydraulic system for energy recovery and release according to any one of claims 1 to 5.
7. The work machine of claim 6, further comprising: and a second pressure sensor (24), wherein the second pressure sensor (24) is arranged on a communicating pipeline of the oil cylinder assembly (14) and the energy accumulator (12).
8. The work machine according to claim 6 or 7, characterized by comprising at least two sets of cylinder assemblies (14), wherein the cylinders (142) of the cylinder assemblies (14) are any one or a combination of several of boom cylinders (142), bucket cylinders (142) and arm cylinders (142).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321797048.0U CN220566330U (en) | 2023-07-10 | 2023-07-10 | Hydraulic system for energy recovery and release and working machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321797048.0U CN220566330U (en) | 2023-07-10 | 2023-07-10 | Hydraulic system for energy recovery and release and working machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220566330U true CN220566330U (en) | 2024-03-08 |
Family
ID=90102490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321797048.0U Active CN220566330U (en) | 2023-07-10 | 2023-07-10 | Hydraulic system for energy recovery and release and working machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220566330U (en) |
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2023
- 2023-07-10 CN CN202321797048.0U patent/CN220566330U/en active Active
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