CN210715319U - Closed hydraulic system for energy accumulator speed regulation - Google Patents
Closed hydraulic system for energy accumulator speed regulation Download PDFInfo
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- CN210715319U CN210715319U CN201921424088.4U CN201921424088U CN210715319U CN 210715319 U CN210715319 U CN 210715319U CN 201921424088 U CN201921424088 U CN 201921424088U CN 210715319 U CN210715319 U CN 210715319U
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Abstract
The utility model discloses a closed hydraulic system of energy storage ware speed governing, the export of fuel replenishment pump (1) links to each other with inlet P mouth of decompression overflow valve (4), and the overflow oil return mouth T mouth of decompression overflow valve (4) links to each other with the T mouth of solenoid directional valve (5) and connects oil tank T, and decompression overflow valve (4) oil-out A mouth links to each other with the P mouth of solenoid directional valve (5); the port A of the electromagnetic directional valve (5) is connected with the inlet of the damping hole A (6), and the port B of the electromagnetic directional valve (5) is connected with the inlet of the damping hole B (7); the outlet of the damping hole A (6) is connected with the port A of the shuttle valve (8), and the outlet of the damping hole B (7) is connected with the port B of the shuttle valve (8); the outlet of the shuttle valve (8) and the inlet of the energy accumulator (9) are connected with the hydraulic control variable regulating mechanism (3). The beneficial effects are as follows: firstly, the soft start performance of the closed hydraulic system is better; and secondly, a new idea for solving the problem of remarkably reducing the pressure increasing rate in the later stage of oil pressure increase is provided, and the problem of lower reliability in the prior art is improved.
Description
Technical Field
The utility model relates to an energy storage ware speed governing hydraulic system.
Background
Non-electrical soft start means that the system soft start is realized without depending on soft regulation of the electrical signal, but the electrical signal in the system can still be used as an independent on/off logic signal. In the prior art, the characteristic of an energy accumulator and a damping hole is utilized to adjust and control the oil pressure to stably rise in a variable mechanism control oil way of a closed variable pump, and the double-oil-way oil supply and pressure rise are realized by automatically opening a hydraulic control reversing valve in the later stage of pressure rise, so that the condition that the control oil pressure and the system speed cannot reach the preset target value in time is compensated to a certain extent. However, the hydraulic control reversing valve has the condition that the stiffness of the pre-compression spring cannot be effectively adjusted, so that the parallel flow process has low reliability and certain technical defects.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a closed hydraulic system of energy storage ware speed governing steps up the later stage at variable pump control oil circuit and passes through the action of control solenoid valve to the mode increase fuel feeding capacity that the oil circuit switches over makes control oil pressure and system speed in time reach the target value.
The technical scheme of the utility model is that the closed hydraulic system for the speed regulation of the energy accumulator comprises an oil supplementing pump, a hydraulic control variable regulating mechanism, a pressure reducing overflow valve, an electromagnetic directional valve, a damping hole A, a damping hole B, a shuttle valve and the energy accumulator; an oil supplementing pump outlet is connected with a P port of an inlet of a pressure reducing overflow valve, an overflow oil return port T port of the pressure reducing overflow valve is connected with a T port of an electromagnetic directional valve and connected with an oil tank T, and an oil outlet A port of the pressure reducing overflow valve is connected with the P port of the electromagnetic directional valve; the port A of the electromagnetic directional valve is connected with the inlet of the damping hole A, and the port B of the electromagnetic directional valve is connected with the inlet of the damping hole B; the outlet of the damping hole A is connected with the port A of the shuttle valve, and the outlet of the damping hole B is connected with the port B of the shuttle valve; the outlet of the shuttle valve and the inlet of the energy accumulator are connected with a hydraulic control variable regulating mechanism.
The flow area of the damping hole A is different from that of the damping hole B, and the damping hole A and the damping hole B are in a parallel structure.
The electromagnetic reversing valve is a Y-function three-position four-way reversing valve; the electrifying sequence of the electromagnetic directional valve is as follows: firstly, connecting an oil way in which the small-flow-area damping holes are located, and then connecting an oil way in which the large-flow-area damping holes are located; in the boosting process, the power loss of the electromagnet on one side of the electromagnetic directional valve and the power acquisition of the electromagnet on the other side of the electromagnetic directional valve are completed simultaneously.
The action condition of the electromagnetic directional valve is the oil passing time of an oil way where the small damping hole is located after the pressure boosting process is started, and when the accumulated time is consistent with the preset time, the electromagnetic directional valve acts; the preset duration can be set manually.
The pressure reducing overflow valve is an independent overflow valve or a pressure reducing valve.
And a damping hole is connected between the T port of the electromagnetic directional valve and the oil tank T.
The utility model discloses there is following beneficial effect: firstly, the soft start performance of the closed hydraulic system is better; and secondly, a new idea for solving the problem of remarkably reducing the pressure increasing rate in the later stage of oil pressure increase is provided, and the problem of lower reliability in the prior art is improved.
Drawings
Fig. 1 is a hydraulic schematic diagram of the present invention.
Detailed Description
As shown in fig. 1, a closed hydraulic system for regulating speed of an energy accumulator comprises an oil replenishing pump 1, a hydraulic control variable regulating mechanism 3, a pressure reducing overflow valve 4, an electromagnetic directional valve 5, an a damping hole 6, a B damping hole 7, a shuttle valve 8 and an energy accumulator 9; the method is characterized in that: an outlet of the oil replenishing pump 1 is connected with an inlet P port of a pressure reducing overflow valve 4, an overflow oil return port T port of the pressure reducing overflow valve 4 is connected with a T port of an electromagnetic directional valve 5 and is connected with an oil tank T, and an oil outlet A port of the pressure reducing overflow valve 4 is connected with the P port of the electromagnetic directional valve 5; the port A of the electromagnetic directional valve 5 is connected with the inlet of the damping hole A6, and the port B of the electromagnetic directional valve 5 is connected with the inlet of the damping hole B7; the outlet of the damping hole A6 is connected with the port A of the shuttle valve 8, and the outlet of the damping hole B7 is connected with the port B of the shuttle valve 8; the outlet of the shuttle valve 8 and the inlet of the accumulator 9 are connected with the hydraulic control variable regulating mechanism 3.
The flow area of the damping hole A6 is different from that of the damping hole B7, and the damping hole A6 and the damping hole B7 are in a parallel structure.
The electromagnetic reversing valve 5 is a Y-function three-position four-way reversing valve; the energizing sequence of the electromagnetic directional valve 5 is as follows: firstly, connecting an oil way in which the small-flow-area damping holes are located, and then connecting an oil way in which the large-flow-area damping holes are located; in the boosting process, the power loss of the electromagnet on one side of the electromagnetic directional valve 5 and the power gain of the electromagnet on the other side are completed simultaneously.
The action condition of the electromagnetic directional valve 5 is the oil passing time of an oil way where the small damping hole is located after the pressure boosting process is started, and when the accumulated time is consistent with the preset time, the electromagnetic directional valve 5 acts; the preset duration can be set manually.
The pressure reducing and overflowing valve 4 is an independent overflowing valve and a pressure reducing valve.
And a damping hole 2 is connected between the T port of the electromagnetic directional valve 5 and the oil tank T.
The action condition of the electromagnetic directional valve 5 is the oil passing time of an oil way where the small damping hole is located after the pressure boosting process is started, and when the accumulated time is consistent with the preset time, the electromagnetic directional valve 5 acts; the preset time length can be set manually; the pressure reducing and overflowing valve 4 is used for limiting the pressure of the control system 2 and is of an integrated structure, but for this purpose, the pressure reducing and overflowing valve 4 can be replaced by a separate overflowing valve, a pressure reducing valve or one of the overflowing valves.
When the closed hydraulic system needs to be started softly, oil liquid of the oil supplementing pump 1 flows into the control system 2, and pressure oil enters a P port of the electromagnetic directional valve 5 through the pressure reducing overflow valve 4; when the electromagnet on the left side of the electromagnetic reversing valve 5 is electrified, oil flows into the shuttle valve 8 through the damping hole B7, and when the electromagnet on the right side of the electromagnetic reversing valve 5 is electrified, the oil flows into the shuttle valve 8 through the damping hole A6; oil flows into the energy accumulator 9 and the variable regulating mechanism 3 from the outlet of the shuttle valve 8 to be boosted; in the control system 2, only one oil way supplies oil to the energy accumulator 9 and the hydraulic control variable adjusting mechanism 3 at the same time, and the oil way where the small damping hole is located is firstly communicated, and then the oil way where the large damping hole is located is communicated.
Claims (6)
1. A closed hydraulic system for regulating the speed of an energy accumulator comprises an oil supplementing pump (1), a hydraulic control variable regulating mechanism (3), a pressure reducing overflow valve (4), an electromagnetic directional valve (5), an A damping hole (6), a B damping hole (7), a shuttle valve (8) and an energy accumulator (9); the method is characterized in that: an outlet of the oil supplementing pump (1) is connected with an inlet P port of the pressure reducing overflow valve (4), an overflow oil return port T port of the pressure reducing overflow valve (4) is connected with a T port of the electromagnetic directional valve (5) and connected with an oil tank T, and an oil outlet A port of the pressure reducing overflow valve (4) is connected with the P port of the electromagnetic directional valve (5); the port A of the electromagnetic directional valve (5) is connected with the inlet of the damping hole A (6), and the port B of the electromagnetic directional valve (5) is connected with the inlet of the damping hole B (7); the outlet of the damping hole A (6) is connected with the port A of the shuttle valve (8), and the outlet of the damping hole B (7) is connected with the port B of the shuttle valve (8); the outlet of the shuttle valve (8) and the inlet of the energy accumulator (9) are connected with the hydraulic control variable regulating mechanism (3).
2. The accumulator governed closed hydraulic system according to claim 1, characterized in that: the flow area of the damping hole A (6) is different from that of the damping hole B (7), and the damping hole A (6) and the damping hole B (7) are in a parallel structure.
3. The accumulator governed closed hydraulic system according to claim 1, characterized in that: the electromagnetic reversing valve (5) is a Y-function three-position four-way reversing valve; the electrifying sequence of the electromagnetic directional valve (5) is as follows: firstly, connecting an oil way in which the small-flow-area damping holes are located, and then connecting an oil way in which the large-flow-area damping holes are located; in the boosting process, the power loss of the electromagnet on one side of the electromagnetic directional valve (5) and the power gain of the electromagnet on the other side are completed simultaneously.
4. The accumulator governed closed hydraulic system according to claim 1, characterized in that: the action condition of the electromagnetic directional valve (5) is the oil passing time of an oil way where the small damping hole is located after the pressure boosting process is started, and when the accumulated time is consistent with the preset time, the electromagnetic directional valve (5) acts; the preset duration can be set manually.
5. The accumulator governed closed hydraulic system according to claim 1, characterized in that: the pressure reducing overflow valve (4) is an independent overflow valve and a pressure reducing valve.
6. The accumulator governed closed hydraulic system according to claim 1, characterized in that: a damping hole (2) is connected between the T port of the electromagnetic directional valve (5) and the oil tank T.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921424088.4U CN210715319U (en) | 2019-08-29 | 2019-08-29 | Closed hydraulic system for energy accumulator speed regulation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921424088.4U CN210715319U (en) | 2019-08-29 | 2019-08-29 | Closed hydraulic system for energy accumulator speed regulation |
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| Publication Number | Publication Date |
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| CN210715319U true CN210715319U (en) | 2020-06-09 |
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| CN201921424088.4U Active CN210715319U (en) | 2019-08-29 | 2019-08-29 | Closed hydraulic system for energy accumulator speed regulation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454447A (en) * | 2019-08-29 | 2019-11-15 | 湘潭市恒欣实业有限公司 | A kind of closed type hydraulic system of accumulator speed regulation |
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2019
- 2019-08-29 CN CN201921424088.4U patent/CN210715319U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454447A (en) * | 2019-08-29 | 2019-11-15 | 湘潭市恒欣实业有限公司 | A kind of closed type hydraulic system of accumulator speed regulation |
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Address after: 411300 high tech Zone, Shaoshan City, Xiangtan City, Hunan Province Patentee after: Xiangtan Hengxin Industrial Co.,Ltd. Address before: 411300 high tech Zone, Shaoshan City, Xiangtan City, Hunan Province Patentee before: XIANGTAN HENGXIN INDUSTRY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |