CN220600118U - Low-energy-consumption load sensitive system and tractor - Google Patents
Low-energy-consumption load sensitive system and tractor Download PDFInfo
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- CN220600118U CN220600118U CN202322118098.8U CN202322118098U CN220600118U CN 220600118 U CN220600118 U CN 220600118U CN 202322118098 U CN202322118098 U CN 202322118098U CN 220600118 U CN220600118 U CN 220600118U
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- 238000005265 energy consumption Methods 0.000 title claims abstract description 12
- 238000006073 displacement reaction Methods 0.000 claims description 11
- 239000000446 fuel Substances 0.000 claims description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 72
- 238000012271 agricultural production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
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Abstract
The application relates to a low energy consumption load sensitive system comprising: the variable plunger pump is internally provided with a flow control valve, the variable plunger pump is in oil supply connection with the multi-way valve through a first pipeline structure, and the flow control valve is in control connection with the multi-way valve through a second pipeline structure. According to the structure provided by the embodiment of the application, the flow control valve is controlled by the pressure difference between the Px1 and the Ls1, the pressure of two points is the same as that of the Px1 and the Px2 because almost no oil flows between the Px1 and the Px2, and the pressures of the Px 1-Ls1=Px2-Ls2 are the same as that of the Px2, so that the flow control of the variable plunger pump is not influenced by the pressure drop caused by the first oil supply pipe, the high-pressure fine filter and the second oil supply pipe, the setting of the flow control valve is not required to be too large, the energy waste is not caused, and a large radiator is not required to balance the generated heat.
Description
Technical Field
The application relates to the technical field of tractors, in particular to a low-energy-consumption load-sensitive system and a tractor.
Background
The information of the tractor is an important component of modern agricultural production, is an important supporting technology of intelligent agricultural machinery, and meets the national development strategic requirements by carrying out intensive research on the intelligent agricultural machinery. With the centralization of the land, the horsepower section of the tractor is continuously increasing. The matched agricultural machinery is diversified, the rear multiplex output of the tractor is provided with higher requirements, the number of paths is large, the flow is large, a plurality of actions need to work simultaneously, the pressure setting of the flow control valve of the variable pump of the load sensitive system is influenced by the pipeline loss of the pipeline from the pump outlet to the inlet of the multiplex valve, and particularly when the pipeline is long and the flow is large, the pipeline loss is large, so that the pressure setting of the flow control valve needs to be larger.
In the prior art, in order to reduce the influence of a pipeline at any time, the diameter of a section of pipeline from a pump outlet to a multi-way valve inlet is required to be increased by setting the pressure of a flow control valve of a variable pump of a load sensitive system, but the arrangement is difficult due to the space limitation; if the flow control valve is set too large, energy is wasted, and a large radiator is needed to balance the heat generated thereby, we propose a low energy load-sensitive system and tractor.
Disclosure of Invention
The application provides a low-energy-consumption load-sensitive system and a tractor, so as to solve the problems.
In a first aspect, the present application provides a low energy load sensing system for a tractor comprising:
the variable plunger pump is internally provided with a flow control valve, the variable plunger pump is in oil supply connection with the multi-way valve through a first pipeline structure, and the flow control valve is in control connection with the multi-way valve through a second pipeline structure.
Preferably, the first pipeline structure comprises a first oil supply pipe and a second oil supply pipe, wherein an inlet of the first oil supply pipe is connected with an oil outlet B of the variable plunger pump, an oil outlet of the first oil supply pipe is connected with a high-pressure fine filter, an oil outlet of the high-pressure fine filter is connected with an oil inlet of the second oil supply pipe, and an oil outlet of the second oil supply pipe is connected with an oil inlet Px2 of the multi-way valve.
Preferably, two second pipeline structures are arranged, oil inlets of the two second pipeline structures are respectively connected with the Px1 and Ls1 ports of the flow control valve, and oil outlets of the two second pipeline structures are respectively connected with the Px2 and Ls2 ports of the multi-way valve.
Preferably, the multi-way valve is connected with the machine tool and the lifting oil cylinder through pipeline control.
Preferably, the variable displacement pump is configured to supply the flow demand of the multiplex valve by drawing oil through a strainer in the tank.
Preferably, the lifting oil cylinder is connected with the oil tank through an oil return pipe.
Preferably, an oil inlet of the variable plunger pump is connected with the strainer through an oil suction pipe, and the strainer is connected with the oil tank through the oil suction pipe.
In a second aspect, the present application provides a tractor comprising the low energy load sensing system for a tractor of the first aspect.
Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:
according to the structure provided by the embodiment of the application, the flow of the variable plunger pump is controlled by the flow control valve, the flow control valve is controlled by the pressure difference between the Px1 and the Ls1, the pressure of two points is the same as that of the Px1 and the Px2 because almost no oil flows between the Px1 and the Px2, and the pressures of the Px 1-Ls1=Px2-Ls2 are the same, so that the flow control of the variable plunger pump is not influenced by the pressure drop caused by the first oil supply pipe, the high-pressure fine filter and the second oil supply pipe, the setting of the flow control valve is not required to be too large, the energy waste is not caused, a large radiator is not required to balance the generated heat, and meanwhile, the pressure setting of the flow control valve of the variable pump of the load-sensitive system is not required to be increased by the diameter of a pipeline from the outlet of the pump to the inlet of the multi-way valve, and the energy consumption is reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
Fig. 1 is an overall structure diagram provided in an embodiment of the present application.
In the figure: 1. an oil tank; 2. a coarse filter; 3. variable displacement plunger pump; 31. a flow control valve; 4. a high pressure fine filter; 51. a first oil supply pipe; 52. a second oil supply pipe; 6. a second pipeline structure; 7. a multiway valve; 8. an implement; 9. and (5) lifting the oil cylinder.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present application based on the embodiments herein.
Various embodiments of the present application may exist in a range format, and it should be understood that the description in a range format is merely for convenience and brevity and should not be construed as a rigid limitation to the scope of the present application; it is therefore to be understood that the range description has specifically disclosed all possible sub-ranges and individual values within that range. For example, it should be considered that a description of a range from 1 to 6 has specifically disclosed sub-ranges, such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., as well as single numbers within the range, such as 1, 2, 3, 4, 5, and 6, wherever applicable. In addition, whenever a numerical range is indicated in this application, it is intended to include any reference to the numbers (fractional or integer) within the indicated range. Unless specifically indicated otherwise, the various raw materials, reagents, instruments, equipment, and the like used in this application are commercially available or may be prepared by existing equipment.
In this application, unless otherwise indicated, terms of orientation such as "upper" and "lower" are used specifically to refer to the orientation of the drawing in the figures. In addition, in the present application, the terms "include," "include," etc. mean "including but not limited to. In this application, relational terms such as "first" and "second", and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. In the present application, "and/or" describing the association relationship of the association object means that there may be three relationships, for example, a and/or B may mean: a alone, a and B together, and B alone. Wherein A, B may be singular or plural. In this application, "at least one" means one or more, and "a plurality" means two or more. "at least one", "at least one" or the like refer to any combination of these items, including any combination of a single item or a plurality of items. For example, "at least one of a, b, or c," or "at least one of a, b, and c," may each represent: a, b, c, a-b, i.e. a and b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple, respectively.
As shown in fig. 1, in one aspect, an embodiment of the present application provides a low energy consumption load sensitive system, including:
the variable plunger pump 3, the inside of variable plunger pump 3 is equipped with flow control valve 31, variable plunger pump 3 is through first pipeline structure fuel feeding connection multiplex valve 7, flow control valve 31 is through second pipeline structure 6 control connection multiplex valve 7.
The first pipeline structure comprises a first oil supply pipe 51 and a second oil supply pipe 52, an inlet of the first oil supply pipe 51 is connected with an oil outlet B of the variable plunger pump 3, an oil outlet of the first oil supply pipe 51 is connected with the high-pressure fine filter 4, an oil outlet of the high-pressure fine filter 4 is connected with an oil inlet of the second oil supply pipe 52, and an oil outlet of the second oil supply pipe 52 is connected with an oil inlet Px2 of the multi-way valve 7.
The second pipeline structures 6 are provided with two oil inlets of the second pipeline structures 6 are respectively connected with the ports Px1 and Ls1 of the flow control valve 31, and the oil outlets of the second pipeline structures 6 are respectively connected with the ports Px2 and Ls2 of the multi-way valve 7.
Specifically: the flow rate of the variable displacement pump 3 is controlled by the flow rate control valve 31, the flow rate control valve 31 is controlled by the pressure difference between Px1 and Ls1, the pressures at two points are the same as those at which there is almost no oil flowing between Px1 and Px2, and the pressures at which Px 1-ls1=px2-Ls 2 are the same as those at which there is Ls2, so that the flow rate control of the variable displacement pump 3 is not affected by the pressure drop caused by the first oil supply pipe 51, the high pressure fine filter 4, and the second oil supply pipe 52.
The multi-way valve 7 is connected with the machine tool 8 and the lifting oil cylinder 9 through pipeline control.
The variable displacement pump 3 supplies the flow demand of the multi-way valve 7 by sucking oil in the oil tank 1 via the strainer 2.
Specifically: the variable plunger pump 3 pumps the oil supply multi-way valve 7 in the oil tank 1.
The lifting oil cylinder 9 is connected with the oil tank 1 through an oil return pipe.
Specifically: the lift cylinder 9 is an actuator, controlled and multi-way valve 7.
The oil inlet of the variable plunger pump 3 is connected with the strainer 2 through an oil suction pipe, and the strainer 2 is connected with the oil tank 1 through an oil suction pipe.
Specifically: the strainer 2 and the oil tank 1 are all available in the market, and are the prior art, and the oil tank 1 is used for storing oil.
When the device is used, the variable plunger pump 3 absorbs oil in the oil tank 1 through the coarse filter 2, the variable plunger pump 3 enables oil to enter a Px2 port of the multi-way valve 7 from a port B through the first oil supply pipe 51, the high-pressure fine filter 4 and the second oil supply pipe 52, and hydraulic oil enters the machine tool 8 through an A1 port of the multi-way valve 7 and then returns to the oil tank 1 through the multi-way valve 7; the flow demand of the machine 8 is controlled by the variable displacement pump 3, the flow of the variable displacement pump 3 is controlled by the flow control valve 31, the flow control valve 31 is controlled by the pressure difference between the Px1 and Ls1, the pressures of two points are the same because almost no oil flows between the Px1 and the Px2, and the pressures of the Px1 and the Ls2 are the same, so that the flow control of the variable displacement pump 3 is not influenced by the pressure drop caused by the first oil supply pipe 51, the high pressure fine filter 4 and the second oil supply pipe 52.
Based on the same inventive concept, the application also provides a tractor, which comprises the low-energy-consumption load-sensitive system for the tractor.
Because this kind of tractor includes above-mentioned low energy consumption load sensitive system for tractor, this tractor has adopted the above-mentioned low energy consumption load sensitive system for tractor embodiment's some or all technical scheme, therefore has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and is not repeated here again.
The foregoing is merely a specific embodiment of the application to enable one skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A low energy load sensitive system comprising:
the variable plunger pump (3), the inside of variable plunger pump (3) is equipped with flow control valve (31), variable plunger pump (3) are through first pipeline structure fuel feeding connection multiple unit valve (7), flow control valve (31) are through second pipeline structure (6) control connection multiple unit valve (7).
2. The low-energy-consumption load-sensitive system according to claim 1, wherein the first pipeline structure comprises a first oil supply pipe (51) and a second oil supply pipe (52), an inlet of the first oil supply pipe (51) is connected with an oil outlet B of the variable displacement pump (3), an oil outlet of the first oil supply pipe (51) is connected with a high-pressure fine filter (4), an oil outlet of the high-pressure fine filter (4) is connected with an oil inlet of the second oil supply pipe (52), and an oil outlet of the second oil supply pipe (52) is connected with an oil inlet Px2 of the multi-way valve (7).
3. The low-energy-consumption load-sensitive system according to claim 1, wherein two second pipeline structures (6) are provided, oil inlets of the two second pipeline structures (6) are respectively connected with Px1 and Ls1 ports of the flow control valve (31), and oil outlets of the two second pipeline structures (6) are respectively connected with Px2 and Ls2 ports of the multi-way valve (7).
4. The low energy load sensitive system according to claim 1, wherein the multiplex valve (7) is connected to the implement (8) and the lift cylinder (9) by means of a pipeline control.
5. The low energy load sensitive system according to claim 4, wherein the lift cylinder (9) is connected to the tank (1) via a return line.
6. The low energy load sensing system according to claim 1, characterized in that the variable displacement pump (3) supplies the flow demand of the multi-way valve (7) by sucking oil in the tank (1) through a strainer (2).
7. The low energy load sensing system according to claim 6, wherein the oil inlet of the variable displacement pump (3) is connected to the strainer (2) by an oil suction pipe, and the strainer (2) is connected to the oil tank (1) by an oil suction pipe.
8. A tractor comprising the low energy load sensitive system of any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322118098.8U CN220600118U (en) | 2023-08-08 | 2023-08-08 | Low-energy-consumption load sensitive system and tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322118098.8U CN220600118U (en) | 2023-08-08 | 2023-08-08 | Low-energy-consumption load sensitive system and tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220600118U true CN220600118U (en) | 2024-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322118098.8U Active CN220600118U (en) | 2023-08-08 | 2023-08-08 | Low-energy-consumption load sensitive system and tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220600118U (en) |
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2023
- 2023-08-08 CN CN202322118098.8U patent/CN220600118U/en active Active
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