• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Hydraulic system for driving at least two consumer units by means of a hydraulic motor. System for the hydraulic drive of multiple consumer units comprising a hydraulic circuit (130) that is operated by means of a hydraulic motor (122) that drives a first consumer unit (111), characterized in that downstream of the first consumer unit (111), the hydraulic circuit (130) has at least one secondary circuit (140, 150) that has at least one second consumer unit (114, 118) and is arranged before the second consumer unit (114) and a pump (113, 117) driven directly or indirectly by the first consuming unit (111). (Machine-translation by Google Translate, not legally binding)
    公开号:ES2858506A2
    申请号:ES202130101
    申请日:2021-02-10
    公开日:2021-09-30
    发明作者:Lorenz Seppi
    申请人:Seppi M SpA；
    IPC主号:
    专利说明:

    [0001] System to drive at least two consumer units by means of a hydraulic motor
    [0002] Field of the invention
    [0003] The present invention relates to a system for driving at least two consumer units by means of a hydraulic motor according to the characterizing part of claim 1.
    [0004] State of the art
    [0005] The invention is applied in the field of agricultural machines, specifically agricultural machines having a tool rotor and a feeding system.
    [0006] Document US 2013/0180237 discloses a hydraulic transmission circuit comprising three or four connected hydraulic motors. In this case all the consuming units are connected in parallel. There is no priority consuming unit that absorbs or can absorb power. Therefore, the system must be sized to allow all consuming units to always absorb the maximum power. This presents considerable inconvenience, because the system is oversized most of the time. Description of the invention
    [0007] The aim of the present invention is to provide a system that has a main consuming unit preceding the secondary users.
    [0008] This objective is achieved by a system as defined in the characterizing part of claim 1.
    [0009] A system is provided for operating at least two consuming units by means of a hydraulic circuit, in which a first consuming unit is arranged before at least one second consuming unit and in which a pump driven by the first is provided. consuming unit in the supply circuit of the second consuming unit.
    [0010] This system can be used particularly when a rotor tool is provided which is designed to crush or process material such as biomass which is supplied, for example, by means of at least one feed rotor, preferably two feed rotors. As a result of the unevenness of work, especially due to a possibly variable biomass, the power demand for the tool rotor that crushes the material can vary. Therefore, if the feed rotor and / or the feed rotors demand discontinuous power for the tool rotor that crushes the material, the power will not be sufficient to crush and / or process the biomass. In particular, the fluid flow in the hydraulic circuit remains constant, while the pressure absorbed by the consuming unit varies according to demand. This can be particularly advantageous in the event of clogging and / or idling of the rotor / consuming unit.
    [0011] A continuous fluid flow to all consuming units will be guaranteed, even when constant pressures / powers are not absorbed by the consuming units.
    [0012] As a result a fluid flow will always be present in all circuits, also in secondary consumer unit circuits, because the pumps are operated by the primary user, thereby maintaining a constant fluid flow. Also, since the primary and secondary circuits are connected in series and not in parallel, the power / pressure will not split upstream, but the system will split automatically.
    [0013] For example, assuming that there are three circuits in parallel, each circuit demanding a maximum fluid flow Q1 + Q2 + Q3 = Qmax, they will absorb the maximum pressure difference Api for the first circuit, Ap2 for the second circuit and Ap3 for the third circuit and they are Apmax = Ap1max = Ap2max = Ap3max. The maximum pressure Pmax = Qmax * Apmax.
    [0014] On the other hand, if they are connected in series Qmax = Q1 (there is only one flow).
    [0015] Pmax = Qmax (Q1) * Ap1max series + Qmax (Q1) * Ap2max series + Qmax (Q1) * Ap3max series. Since Apiseriemax, Ap2seriesmax, Ap3seriesmax depend on the current user demand, if the latter is zero, for example, for secondary users 2 and 3 then Pmax = Qmax (Q1) * Ap1seriesmax + Qmax (Q1) * Ap2seriesmax + Qmax ( Q1) * Ap3seriesmax because Ap2seriesmax = Ap3seriesmax = 0 Pmax = Qmax (Q1) * Apiseriemax + 0 + 0.
    [0016] Brief description of the drawings
    [0017] Additional objectives, features, advantages, and application options will become apparent from the following description of some exemplary embodiments to and from the accompanying drawings. Therefore, all the characteristics as described and / or shown in the figures form by themselves or in any combination the objective disclosed in the present specification, also independently of whether they are grouped in the claims or their dependencies, while :
    [0018] Figure 1 shows a diagrammatic view of a circuit of the invention and
    [0019] Figure 2 shows the circuit of Figure 1 with the indication of the primary and secondary circuits.
    [0020] Detailed description of some embodiments of the invention
    [0021] The number 100 designates a hydraulic drive system for multiple consuming units, consisting of a hydraulic circuit 130 operated by means of a hydraulic motor 122 that drives a first consuming unit 111 downstream of the first consuming unit 111, the hydraulic circuit 130 has at least one secondary hydraulic circuit 140 that has at least a second consumer unit 114 and is arranged before the second consumer unit 114 and a pump 113 driven directly or indirectly by the first consumer unit 111. The embodiment such as shown in Figure 1 includes a second secondary circuit 150 with a second secondary consumer unit 118 and arranged before the second secondary consumer unit 118 and a second pump 117 also driven directly or indirectly by the first user 111.
    [0022] The actuation part 121 of the hydraulic circuit comprising the hydraulic motor 122 actuates all the consuming units arranged in the part of the hydraulic actuation system 100 in which the consuming units 110 are arranged. Advantageously, the actuation part 121 can be arranged in a tractor or the like or it may consist of the tractor and / or the like. The part in which the consuming units 110 are arranged can be the machine for agricultural / forestry use which is connected to the tractor and to the hydraulic circuit of the tractor and / or the machine to tow or carry the machine for agricultural / forestry use.
    [0023] Preferably, the main consuming unit 111 is a tool rotor that is used in agricultural machines. This motor has the pump 113 and 117 directly or indirectly connected to it, which drives the secondary consumer units that are preferably power producers that feed the main rotor with biomass and the like that is crushed by the main rotor.
    [0024] The above-described variants of the mechanism are only provided to better understand the structure, function, and properties of the solution as provided; they do not limit the disclosure to exemplary embodiments. The figures are schematic, partially showing the essential properties and effects in an enlarged size, to clearly highlight the functions, principles of action, configurations and technical characteristics. Therefore, each operation, each principle, each technical configuration and each feature as disclosed in the figures or in the text can be provided in any free combination with all the claims, and with each feature in the text and the other figures, others operations, principles, configurations and technical characteristics contained in or resulting from the disclosure, it is therefore considered that the solution described above encompasses every conceivable combination. This also includes combinations of all individual disclosures in the text, ie in each paragraph of the text, in the claims and also in combinations of different variants in the text, sizes and figures. The details of the device and method described above are represented in the connection; however, it should be noted that they can be combined with each other even if they are independent of each other and freely from each other. The reasons as shown in the figures of the parts and the individual sections thereof and their sizes and their proportions are not to be considered as limiting. Individual sizes and proportions may also differ from those as shown. The claims also do not limit the disclosure and therefore the ability to combine all the features herein. All features herein are further disclosed individually and in combination with all other features.
    [0025] List of references
    [0026] 100 Hydraulic drive system
    [0027] 110 consumer units
    [0028] 111 First consuming unit
    [0029] 112 First secondary circuit input connection / diversion
    [0030] 113 Pump
    [0031] 114 Second consumer unit
    [0032] Outlet connection / diversion of the first secondary circuit Inlet connection / diversion of the second secondary circuit Pump
    [0033] Second secondary consumer unit Second secondary circuit output connection / diversion Drive part
    [0034] Hydraulic engine
    [0035] Hydraulic circuit
    [0036] Secondary hydraulic circuit
    [0037] Second secondary circuit
    权利要求:
    Claims (5)
    [1]
    1. System for the hydraulic actuation of multiple consumer units that comprises a hydraulic circuit (130) that is operated by means of a hydraulic motor (122) that drives a first consumer unit (111), characterized in that, downstream of the first consumer unit (111), the hydraulic circuit (130) has at least one secondary circuit (140, 150) that has at least one second consumer unit (114, 118) and is arranged before the second consumer unit (114 ) and a pump (113, 117) driven directly or indirectly by the first consuming unit (111).
    [2]
    System for the hydraulic actuation of multiple consumer units according to claim 1, characterized in that it has at least two secondary circuits (140, 150) that have a pump (113, 117) arranged respectively before each second consumer unit (114 , 118) and driven directly or indirectly by the first consuming unit (111).
    [3]
    System for the hydraulic actuation of multiple consumer units according to claim 1, characterized in that it has at least two secondary circuits (140, 150) that have a pump (113, 117) arranged respectively before the second consumer units (114 , 118), and driven directly or indirectly by the first consumer unit (111).
    [4]
    4. System for the hydraulic drive of multiple consumer units according to any of the preceding claims, characterized in that the first consumer unit (111) is a tool rotor.
    [5]
    5. System for the hydraulic drive of multiple consumer units according to any of the preceding claims, characterized in that the second consumer units (114, 118) are feed rotors.
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    同族专利:
    公开号 | 公开日
    ES2858506R1|2021-11-22|
    US20210252687A1|2021-08-19|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3686862A|1971-04-14|1972-08-29|Bucyrus Erie Co|Hydraulic system for single engine truck crane or the like|
    FR2259256B1|1974-01-24|1977-06-10|Yumbo|
    DE3202351A1|1982-01-26|1983-07-28|Robert Bosch Gmbh, 7000 Stuttgart|HYDRAULIC SYSTEM|
    US20150048188A1|2013-08-15|2015-02-19|Parker-Hannifin Corporation|Pto driven chipper system|
    法律状态:
    2021-09-30| BA2A| Patent application published|Ref document number: 2858506 Country of ref document: ES Kind code of ref document: A2 Effective date: 20210930 |
    2021-11-22| EC2A| Search report published|Ref document number: 2858506 Country of ref document: ES Kind code of ref document: R1 Effective date: 20211115 |
    优先权:
    申请号 | 申请日 | 专利标题
    IT202000002881|2020-02-13|
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