CN222615744U - A relief valve loss energy recovery application system, hydraulic system and loader - Google Patents
A relief valve loss energy recovery application system, hydraulic system and loader Download PDFInfo
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- CN222615744U CN222615744U CN202420748046.0U CN202420748046U CN222615744U CN 222615744 U CN222615744 U CN 222615744U CN 202420748046 U CN202420748046 U CN 202420748046U CN 222615744 U CN222615744 U CN 222615744U
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Abstract
本实用新型涉及一种溢流阀损失能量回收应用系统、液压系统及装载机，包括蓄能油路，蓄能油路连接有蓄能器，蓄能油路的进油端用于与连接在工作系统油路的主溢流阀的出口连接，蓄能油路的出油端与液控通断阀的进油口连接，液控通断阀的出油口用于连接至转向系统油路，所述液控通断阀的控制通道的一端用于连接至转向系统油路，另一端设置有弹性件，弹性件与液控通断阀控制通道内的阀芯连接，采用本实用新型的能量回收应用系统避免了主溢流阀的能量浪费。
The utility model relates to an overflow valve loss energy recovery application system, a hydraulic system and a loader, comprising an energy storage oil circuit, wherein the energy storage oil circuit is connected with an accumulator, the oil inlet end of the energy storage oil circuit is used to be connected with the outlet of a main overflow valve connected to the working system oil circuit, the oil outlet end of the energy storage oil circuit is connected with the oil inlet of a hydraulically controlled on-off valve, the oil outlet of the hydraulically controlled on-off valve is used to be connected to the steering system oil circuit, one end of a control channel of the hydraulically controlled on-off valve is used to be connected to the steering system oil circuit, and the other end is provided with an elastic member, the elastic member is connected with a valve core in the control channel of the hydraulically controlled on-off valve, and the energy recovery application system of the utility model is adopted to avoid energy waste of the main overflow valve.
Description
Technical Field
The utility model relates to the technical field of engineering machinery, in particular to an overflow valve lost energy recovery application system, a hydraulic system and a loader.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The hydraulic circuit of the working system of the loader limits the pressure to 340bar, the hydraulic circuit of the steering system limits the pressure to 260bar, when the load force in the hydraulic circuit of the working system is large, a main overflow valve connected with the hydraulic circuit of the working system is opened after the working pressure of the hydraulic system reaches 340bar, an outlet of the main overflow valve is connected with an oil tank, oil overflows back to the oil tank, and the loss power of an overflow part is the front-rear pressure difference X flow of the overflow valve. The outlet of the overflow valve is connected with the oil tank, the outlet pressure is negligible, so that the overflow loss power is F=34×q/60KW, and the system accumulated overflow loss energy is high due to high opening frequency of the overflow valve in the working process of the loader, so that a large amount of energy is wasted.
Disclosure of utility model
The utility model aims to overcome the defects of the prior art, and provides an overflow valve lost energy recovery application system, a hydraulic system and a loader, which can realize the recovery and the utilization of the energy lost by a main overflow valve and avoid the waste of the energy.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
In a first aspect, an embodiment of the present utility model provides an overflow valve lost energy recovery application system, including an energy storage oil path, where the energy storage oil path is connected with an energy accumulator, an oil inlet end of the energy storage oil path is connected with an outlet of a main overflow valve connected to a working system oil path, an oil outlet end of the energy storage oil path is connected with an oil inlet of a hydraulic control on-off valve, an oil outlet of the hydraulic control on-off valve is connected to a steering system oil path, one end of a control channel of the hydraulic control on-off valve is connected to the steering system oil path, and the other end of the control channel of the hydraulic control on-off valve is provided with an elastic element, and the elastic element is connected with a valve core in a control channel of the hydraulic control on-off valve.
Optionally, a first one-way valve is installed on an energy storage oil path at the upstream of the energy accumulator, so that hydraulic oil can only flow to the energy accumulator from the main overflow valve.
Optionally, an energy storage oil way at the downstream of the energy accumulator is also connected with an auxiliary overflow valve, and an outlet of the auxiliary overflow valve is connected with the oil tank through an oil way.
Optionally, the rated operating pressure of the auxiliary relief valve is not greater than the rated pressure of the accumulator.
Optionally, a second one-way valve is arranged at an oil path interface of the hydraulic switch valve, which is used for being connected with the steering system oil path, so that hydraulic oil can only flow to the steering system oil path from the hydraulic switch valve.
Optionally, the maximum elastic force of the elastic member is equal to the rated pressure of the accumulator and is smaller than the rated working pressure of the relief valve in the steering system oil circuit.
Optionally, the elastic component adopts the spring, and the one end of spring is connected with the case of on-off valve, and the other end is fixed to be set up.
Optionally, the hydraulic control on-off valve adopts a hydraulic control two-position two-way shut-off valve.
In a second aspect, an embodiment of the present utility model provides a hydraulic system, including the system for recovering lost energy of an overflow valve according to the first aspect, further including a working system oil path and a steering system oil path, where an oil inlet end of the energy storage oil path is connected to an outlet of a main overflow valve connected to the working system oil path, a control channel end of the hydraulic control on-off valve is connected to the steering system oil path through a control oil path, and an oil outlet of the hydraulic control on-off valve is connected to the steering system oil path through an oil path.
In a third aspect, embodiments of the utility model provide a loader provided with a hydraulic system according to the second aspect.
The beneficial effects of the utility model are as follows:
The utility model relates to an overflow valve lost energy recovery application system, which comprises an energy storage oil way, wherein the energy storage oil way is provided with an energy accumulator, the oil inlet end of the energy storage oil way is used for being connected with an outlet of a main overflow valve, the energy accumulator can recover the lost energy of the main overflow valve, the outlet end of the energy storage oil way is connected with an oil inlet of a hydraulic control on-off valve, the oil outlet of the hydraulic control on-off valve is used for being connected with a steering system oil way, one end of a control channel of the hydraulic control on-off valve is used for being connected with the steering system oil way, the other end of the control channel of the hydraulic control on-off valve is provided with an elastic piece connected with a valve core, the energy accumulator can recover the lost energy of the main overflow valve through the energy storage oil way under the normal working state of the working system oil way and the steering system oil way, the hydraulic control on-off valve is in an off state due to the fact that the hydraulic control on-off valve is opened under the action of the elastic piece when the steering system oil way can not normally establish the oil pressure, the energy accumulator is conducted with the steering system oil way, the energy accumulator can provide emergency energy for the steering system oil way, and the utilization of the lost energy of the main overflow valve is further realized, and a great deal of lost energy of the main overflow valve is avoided.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application.
FIG. 1 is a schematic view showing the overall structure of embodiment 1 of the present utility model;
FIG. 2 is a schematic overall structure of embodiment 2 of the present utility model;
The hydraulic control system comprises an accumulator 1, a main overflow valve 3, an auxiliary overflow valve 4, an oil tank 5, a steering system overflow valve 6, a first one-way valve 7, a second one-way valve 8, a hydraulic control two-position two-way shut-off valve 9, a control oil circuit 10, a spring 11, a working pump 12, a steering pump 13 and a hydraulic pressure switch.
Detailed Description
Example 1
The embodiment provides an overflow valve lost energy recovery application system, including the energy storage oil circuit, install energy storage ware 1 on the energy storage oil circuit, the oil feed end of energy storage oil circuit is used for connecting the export of the main overflow valve 2 that the operating system oil circuit is connected, and the export of energy storage oil circuit is connected to the hydraulically controlled on-off valve, be connected with energy storage ware 1 on the energy storage oil circuit for collect the overflow ability of main overflow valve 2, the oil outlet end of energy storage oil circuit is connected to the oil inlet of hydraulically controlled on-off valve, and its oil-out is used for being connected to the steering system oil circuit, the one end of the control channel of hydraulically controlled on-off valve is used for being connected to the steering system oil circuit, and the other end of control channel is provided with the elastic component, and the elastic component is connected with the case of hydraulically controlled on-off valve, and the motion of valve core in the hydraulically controlled on-off valve can be controlled jointly to realize the switching of hydraulically controlled on-off valve oil inlet and oil-out on-off state, the energy storage oil circuit of energy storage ware 1 low reaches through the oil circuit connection vice overflow valve 3, vice overflow valve 3 is connected with oil tank 4.
The rated pressure of the accumulator 1 is smaller than the rated operating pressure of the main relief valve 2, the rated pressure of the accumulator 1 is also smaller than the rated operating pressure of the steering system relief valve 5 to which the steering system oil circuit is connected, in this embodiment, the rated operating pressure of the main relief valve 2 is 340bar, the rated operating pressure of the steering system relief valve 5 to which the steering system oil circuit is connected is 260bar, and preferably, the rated pressure of the accumulator 1 is 200bar.
The inlet of the auxiliary overflow valve 3 is connected to an energy storage oil way at the downstream of the energy accumulator 1, the outlet of the auxiliary overflow valve is connected to the oil tank 4, the rated working pressure of the auxiliary overflow valve 3 is 200bar as the rated pressure of the energy accumulator 1, the oil pressure limiting effect is achieved, and the energy accumulator 1 is prevented from being damaged due to overlarge pressure.
The energy storage oil way at the upstream of the energy accumulator 1 is provided with a first one-way valve 6, and the first one-way valve 6 can only allow oil to flow from the main overflow valve 2 to the energy accumulator 1, so that backflow of the oil is avoided.
The second one-way valve 7 is arranged at the oil outlet of the hydraulic control on-off valve, and the second one-way valve 7 only allows oil to flow to the oil way of the steering system through the hydraulic control channel valve, so that backflow of the oil is avoided.
The hydraulic control on-off valve adopts the existing hydraulic control two-position two-way shut-off valve 8, which comprises a shell, a control channel is arranged in the shell and is communicated with an oil inlet and an oil outlet, a valve core capable of moving along the axial direction of the valve core is arranged in the control channel, the end part of the control channel on one side of the valve core is connected to an oil way of a steering system through a control oil way 9, an elastic piece is arranged on the other side of the control channel, the elastic piece is a spring 10, one end of the spring 10 is connected with the valve core, the other end of the spring 10 is fixedly arranged, preferably, the other end of the spring 10 is fixedly arranged with the shell, the two-position two-way shut-off valve 8 adopts the existing valve, and further technical details of the valve core are not described in detail herein.
Preferably, the maximum spring force of the spring 10 is equal to the rated pressure of the accumulator 1, 200bar.
Hydraulic oil in an oil way of the steering system can enter a control channel on one side of the valve core through the oil way, so that one side of the valve core receives the oil pressure effect, the other side of the valve core receives the elastic force effect of the spring 10, and the valve core can move in the control channel under the oil pressure and the elastic force effect, so that the switching of the on-off states of the oil inlet and the oil outlet is realized.
Specifically, when the normal oil pressure can be established in the steering system oil path, under the action of the oil pressure, the valve core moves to the cutting-off station against the elasticity of the spring 10, at this time, the oil inlet and the oil outlet are disconnected, the energy accumulator cannot supply oil to the steering system oil path through the energy storage oil path, when the normal oil pressure cannot be established in the steering system oil path, under the action of the elasticity of the spring 10, the valve core moves to the conducting station, at this time, the oil inlet and the oil outlet are conducted, and the energy accumulator 1 supplies oil to the steering system oil path through the energy storage oil path.
Example 2
The embodiment provides a hydraulic system for installing at the loader, hydraulic system includes work system oil circuit and steering system oil circuit, and the work system oil circuit is connected with work pump 11, and work pump 11 is connected with oil tank 4, and the steering system oil circuit is connected with steering pump 12, and steering pump 12 is connected with oil tank 4, and the work system oil circuit of work pump 11 low reaches is connected with main relief valve 2, and the steering system oil circuit of steering pump 12 low reaches is connected with steering system relief valve 5.
The arrangement and connection of the components of the hydraulic system described above may be achieved by techniques of existing hydraulic systems of loaders, and will not be described in further detail herein.
The hydraulic system further comprises an overflow valve lost energy recovery application system according to embodiment 1, wherein an oil inlet end of the energy storage oil path is connected to an outlet of the main overflow valve 2, a first one-way valve 6 is installed between the main overflow valve 2 and the energy accumulator 1, so that hydraulic oil can only flow from the main overflow valve 2 to the energy accumulator 1, an oil outlet of the hydraulic control two-position two-way shut-off valve 8 is provided with a second one-way valve 7, an oil outlet end of the second one-way valve 7 is connected to a steering system oil path downstream of the steering pump 12 through an oil path, and one end of a control channel of the hydraulic control two-position two-way shut-off valve 8 is connected to the steering system oil path downstream of the steering pump 12 through a control oil path 9.
The working method of the embodiment is as follows:
Under the normal working state, hydraulic oil flowing out of the main overflow valve 2 enters an energy storage oil way, and overflow energy is collected by the energy storage device 1.
When normal oil pressure can be established in the steering system oil way, the valve core cuts off the oil inlet and the oil outlet of the hydraulic control two-position two-way cut-off valve 8 under the action of the oil pressure.
When normal oil pressure cannot be established in the steering system oil way, under the action of the elasticity of the spring 10, the valve core moves to conduct the oil inlet and the oil outlet of the hydraulic control two-position two-way shut-off valve 8, and the energy accumulator 1 can provide hydraulic oil for the steering system oil way through the energy storage oil way, so that emergency energy is provided for the steering system oil way, the utilization of energy loss of the main overflow valve 2 is realized, and a great amount of energy loss of the main overflow valve is avoided.
Example 3
The difference between the hydraulic system provided in this embodiment and the hydraulic system provided in embodiment 2 is that the oil path of the steering system at the downstream of the steering pump is connected to a hydraulic pressure switch 13, the hydraulic pressure switch 13 is only required to be an existing device, and not described in detail herein, the hydraulic pressure switch 13 is connected to a power supply circuit of an alarm device 14, the alarm device 14 is required to be an existing device, for example, a buzzer alarm or an alarm lamp, etc., which are set by a person skilled in the art according to actual needs, the rated working pressure of the hydraulic pressure switch 13 is 3bar, and when the hydraulic pressure switch 13 detects that the pressure in the oil path of the steering system is less than 3bar, the power supply circuit of the alarm device 14 is turned on, and the alarm device works to perform fault alarm.
The remaining structure of embodiment 3 is the same as that of embodiment 2, and a repetitive description thereof will not be given here.
Example 4
The present embodiment provides a loader, in which the hydraulic system described in embodiment 2 or embodiment 3 is installed, and the rest of the structure of the loader is only required to be described in detail herein.
While the foregoing description of the embodiments of the present utility model has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the utility model, but rather, it is intended to cover all modifications or variations within the scope of the utility model as defined by the claims of the present utility model.
Claims (10)
1. The utility model provides an overflow valve loses energy recovery application system, its characterized in that includes the energy storage oil circuit, and the energy storage oil circuit is connected with the energy storage ware, and the oil feed end of energy storage oil circuit is used for being connected the exit linkage at the main overflow valve of operating system oil circuit, and the oil outlet end of energy storage oil circuit is connected with the oil inlet of hydraulically controlled on-off valve, and the oil-out of hydraulically controlled on-off valve is used for being connected to the steering system oil circuit, the one end of the control passageway of hydraulically controlled on-off valve is used for being connected to the steering system oil circuit, and the other end is provided with the elastic component, and the elastic component is connected with the case in the hydraulically controlled on-off valve control passageway.
2. A relief valve lost energy recovery application according to claim 1 wherein a first one-way valve is mounted in the accumulator circuit upstream of the accumulator to allow hydraulic fluid to flow only from the main relief valve to the accumulator.
3. The relief valve lost energy recovery system of claim 1 wherein the stored energy fluid path downstream of the accumulator is further connected to a secondary relief valve, the outlet of the secondary relief valve being connected to the tank via a fluid path.
4. A relief valve lost energy recovery application according to claim 3 wherein the rated operating pressure of the secondary relief valve is no greater than the rated pressure of the accumulator.
5. The excess flow valve lost energy recovery application system of claim 1 wherein the hydraulic control on-off valve is configured with a second one-way valve at an oil passage interface for connection to the steering system oil passage such that hydraulic oil can only flow from the hydraulic on-off valve to the steering system oil passage.
6. A relief valve lost energy recovery application according to claim 1, wherein the maximum spring force of the spring is equal to the rated pressure of the accumulator and less than the rated operating pressure of the relief valve in the steering system oil circuit.
7. The relief valve lost energy recovery application system of claim 1, wherein the spring is a spring, one end of the spring is connected to the spool of the pilot operated on-off valve, and the other end of the spring is fixedly disposed.
8. The excess flow valve lost energy recovery system of claim 1 wherein the pilot operated on-off valve is a pilot operated two-position two-way shut-off valve.
9. A hydraulic system, characterized by comprising an overflow valve lost energy recovery application system according to any of claims 1-8, further comprising a working system oil circuit and a steering system oil circuit, wherein the oil inlet end of the energy storage oil circuit is connected to the outlet of the main overflow valve connected to the working system oil circuit, one end of the control channel of the hydraulic control on-off valve is connected to the steering system oil circuit through a control oil circuit, and the oil outlet of the hydraulic control on-off valve is connected to the steering system oil circuit through an oil circuit.
10. A loader, characterized in that a hydraulic system as claimed in claim 9 is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420748046.0U CN222615744U (en) | 2024-04-11 | 2024-04-11 | A relief valve loss energy recovery application system, hydraulic system and loader |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420748046.0U CN222615744U (en) | 2024-04-11 | 2024-04-11 | A relief valve loss energy recovery application system, hydraulic system and loader |
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| CN222615744U true CN222615744U (en) | 2025-03-14 |
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| CN202420748046.0U Active CN222615744U (en) | 2024-04-11 | 2024-04-11 | A relief valve loss energy recovery application system, hydraulic system and loader |
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| CN (1) | CN222615744U (en) |
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