A hydraulic pump flow pressure control mechanism
By designing first and second hydraulic mechanisms and a check valve structure in the hydraulic pump, the problem of low integration of the hydraulic pump is solved, oil pressure regulation and fault tolerance are realized, and the reliability and stability of the hydraulic pump are improved.
Patent Information
- Application Number
- CN202411777350.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-05
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2044-12-05
AI Technical Summary
Existing hydraulic pumps cannot be integrated with replenishment hydraulic pumps in certain application scenarios, resulting in high failure rates and failure to meet the weight and volume constraints of aircraft. Furthermore, the integration level of existing structures is low.
A hydraulic pump flow boosting control mechanism was designed. By setting first and second hydraulic mechanisms in the hydraulic pump and connecting them with a third combined oil circuit, combined with a check valve and a bridge oil circuit, the mechanism can achieve oil pressure regulation and fault tolerance, ensuring stable oil supply even when a single hydraulic pump fails.
It enables convenient oil pressure regulation, improves integration, and can still reliably and stably provide pressure and flow downstream even when a single hydraulic pump fails, thus enhancing the reliability of the system.
Smart Images
Figure CN119435493B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a hydraulic pump control mechanism, and more particularly to a hydraulic pump flow boosting control mechanism. Background Technology
[0002] Aircraft have extremely strict weight control requirements for airborne products and increasingly stringent demands on their operational reliability. This has created a need for integrated hydraulic pump design. For example, piston pumps with through-shaft internal bearings typically have a supplementary hydraulic pump connected in series at the extended end of the shaft to improve the piston pump's suction capacity, prevent cavitation and air intake, and extend its service life. However, in some applications, such as certain aircraft models, due to weight and size limitations, it is not possible to install a supplementary hydraulic pump in front of the main hydraulic pump. Furthermore, such a structure has low integration and is prone to failure. Summary of the Invention
[0003] The purpose of this invention is to provide a hydraulic pump flow boosting control mechanism. It has the advantages of convenient power adjustment and stable and reliable operation.
[0004] The technical solution of the present invention: A hydraulic pump flow boosting control mechanism includes a housing, a third combined oil circuit is provided at the upper end of the inner side of the housing, a first hydraulic mechanism is provided at the lower end of the third combined oil circuit, and a second hydraulic mechanism is provided on one side of the first hydraulic mechanism for regulating and supplying oil to the first hydraulic mechanism.
[0005] In the aforementioned hydraulic pump flow boosting control mechanism, the first hydraulic mechanism includes a first hydraulic pump, a first hydraulic pump drive device for driving the first hydraulic pump is provided on the lower side of the first hydraulic pump, a pump group inlet is provided on the lower side of the first hydraulic pump drive device, a first hydraulic pump outlet and a first hydraulic pump suction port are respectively provided on the upper and lower sides of the first hydraulic pump, a second combined oil circuit connecting to a third combined oil circuit is provided on the upper side of the first hydraulic pump outlet, a first bridge oil circuit is provided on one side of the first hydraulic pump, the lower side of the first bridge oil circuit is connected to the oil circuit between the first hydraulic pump and the first hydraulic pump drive device, a first combined oil circuit is provided on the upper side of the first bridge oil circuit, and a first check valve connecting to the third combined oil circuit is provided on the upper side of the first combined oil circuit.
[0006] In the aforementioned hydraulic pump flow boosting control mechanism, the second hydraulic mechanism includes a second hydraulic pump drive device located below the third combined oil circuit. A second hydraulic pump is provided below the second hydraulic pump drive device. A second hydraulic pump inlet and a second hydraulic pump outlet are respectively provided on the upper and lower sides of the second hydraulic pump. A fifth combined oil circuit is provided below the outlet of the second hydraulic pump. A pump group outlet is provided below the fifth combined oil circuit. A second bridge oil circuit is provided on one side of the second hydraulic pump. The upper side of the second bridge oil circuit is connected to the oil circuit between the second hydraulic pump drive device and the second hydraulic pump. A fourth combined oil circuit is provided below the second bridge oil circuit. A second check valve connected to the pump group outlet is provided below the fourth combined oil circuit.
[0007] In the aforementioned hydraulic pump flow boosting control mechanism, the first one-way valve includes a fixed seat, a first spring seat in the fixed seat, a spring on the first spring seat, a valve core connected to the lower end of the spring, a valve sleeve mounted on the fixed seat on the outer side of the lower end of the valve core, and a sealing ring for sealing the valve sleeve and the valve core on the upper end of the valve sleeve.
[0008] In the aforementioned hydraulic pump flow boosting control mechanism, the valve core includes a second spring seat for connection with a spring, a first cylindrical sleeve is provided on the lower side of the second spring seat, a first oil passage hole is provided inside the first cylindrical sleeve, a spring seat boss corresponding to the valve sleeve is provided on the outer side of the second spring seat, and a sealing ring groove for installing a sealing ring is provided on the lower side of the spring seat boss.
[0009] In the aforementioned hydraulic pump flow boosting control mechanism, the valve sleeve includes a second cylindrical sleeve, with a valve sleeve boss on the outer side of the upper end of the second cylindrical sleeve, and a through hole corresponding to the first cylindrical sleeve inside the second cylindrical sleeve.
[0010] Compared with the prior art, the present invention has the following advantages:
[0011] This application provides a hydraulic pressure adjustment mechanism on one side of the first hydraulic mechanism, which facilitates hydraulic pressure adjustment and has a high degree of integration, thus reducing the required space. Even if the hydraulic pump or hydraulic pump drive device in one of the first and second hydraulic mechanisms fails, this application can still reliably and stably provide downstream users with a certain pressure and flow rate of hydraulic fluid, demonstrating good reliability. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of the present invention;
[0013] Figure 2 This is a schematic diagram of the structure of the first check valve of the present invention;
[0014] Figure 3 This is a schematic diagram of the valve core structure of the present invention;
[0015] Figure 4 This is a schematic diagram of the valve sleeve of the present invention;
[0016] Figure 5 This is a cross-sectional view of the present invention;
[0017] Figure 6 This is a cross-sectional view of the present invention.
[0018] The labels in the attached diagram are as follows: 1-Pump inlet, 2-First hydraulic pump drive unit, 3-First hydraulic pump, 4-First hydraulic pump suction port, 5-First bridge oil circuit, 6-First hydraulic pump outlet, 7-First combined oil circuit, 8-First check valve, 9-Second combined oil circuit, 10-Third combined oil circuit, 11-Second hydraulic pump drive unit, 12-Second hydraulic pump, 13-Second hydraulic pump inlet, 14-Second bridge oil circuit, 15-Fourth combined oil circuit, 16-Second hydraulic pump outlet. 17-Fifth combined oil circuit, 18-Pump set outlet, 19-Second check valve, 20-Housing, 8.1-First spring seat, 8.2-Spring, 8.3-Valve core, 8.4-Sealing ring, 8.5-Valve sleeve, 8.3.1-Second spring seat, 8.3.2-First oil passage hole, 8.3.3-First cylindrical sleeve, 8.3.4-Spring seat boss, 8.3.5-Sealing ring groove, 8.5.1-Valve sleeve boss, 8.5.2-Through hole, 8.5.3-Second cylindrical sleeve. Detailed Implementation
[0019] The present invention will be further described below with reference to embodiments, but these are not intended to limit the scope of the invention.
[0020] Example. A hydraulic pump flow boosting control mechanism, configured as follows: Figure 1-6 As shown, the device includes a housing 20. The upper inner side of the housing 20 is provided with a third combined oil passage 10. The lower side of the third combined oil passage 10 is provided with a first hydraulic mechanism. The side of the first hydraulic mechanism is provided with a second hydraulic mechanism for regulating and supplying oil to the first hydraulic mechanism.
[0021] The first hydraulic mechanism includes a first hydraulic pump 3. A first hydraulic pump drive device 2 is provided on the lower side of the first hydraulic pump 3 to drive the first hydraulic pump 3. A pump inlet 1 is provided on the lower side of the first hydraulic pump drive device 2. A first hydraulic pump outlet 6 and a first hydraulic pump suction port 4 are provided on the upper and lower sides of the first hydraulic pump 3, respectively. A second combined oil circuit 9 connecting the third combined oil circuit 10 is provided on the upper side of the first hydraulic pump outlet 6. A first bridge oil circuit 5 is provided on one side of the first hydraulic pump 3. The lower side of the first bridge oil circuit 5 is connected to the oil circuit between the first hydraulic pump 3 and the first hydraulic pump drive device 2. A first combined oil circuit 7 is provided on the upper side of the first bridge oil circuit 5. A first check valve 8 connecting the third combined oil circuit 10 is provided on the upper side of the first combined oil circuit 7.
[0022] The second hydraulic mechanism includes a second hydraulic pump drive device 11 located below the third combined oil circuit 10. A second hydraulic pump 12 is provided below the second hydraulic pump drive device 11. A second hydraulic pump inlet 13 and a second hydraulic pump outlet 16 are respectively provided on the upper and lower sides of the second hydraulic pump 12. A fifth combined oil circuit 17 is provided below the second hydraulic pump outlet 16. A pump group outlet 18 is provided below the fifth combined oil circuit 17. A second bridge oil circuit 14 is provided on one side of the second hydraulic pump 12. The upper side of the second bridge oil circuit 14 is connected to the oil circuit between the second hydraulic pump drive device 11 and the second hydraulic pump 12. A fourth combined oil circuit 15 is provided below the second bridge oil circuit 14. A second check valve 19 connected to the pump group outlet 18 is provided below the fourth combined oil circuit 15.
[0023] The first one-way valve 8 includes a fixed seat 8.6, in which a first spring seat 8.1 is provided, and a spring 8.2 is provided on the first spring seat 8.1. The lower end of the spring 8.2 is connected to a valve core 8.3. A valve sleeve 8.5 is provided on the outer side of the lower end of the valve core 8.3 and mounted on the fixed seat 8.6. A sealing ring 8.4 for sealing the valve sleeve 8.5 and the valve core 8.3 is provided on the upper end of the valve sleeve 8.5.
[0024] The valve core 8.3 includes a second spring seat 8.3.1 for connecting with the spring 8.2. The second spring seat 8.3.1 has a first cylindrical sleeve 8.3.3 on its lower side, and a first oil passage hole 8.3.2 inside the first cylindrical sleeve 8.3.3. The second spring seat 8.3.1 has a spring seat boss 8.3.4 on its outer side, corresponding to the valve sleeve 8.5. The lower side of the spring seat boss 8.3.4 has a sealing ring groove 8.3.5 for installing the sealing ring 8.4.
[0025] The valve sleeve 8.5 includes a second cylindrical sleeve 8.5.3. The upper outer side of the second cylindrical sleeve 8.5.3 is provided with a valve sleeve boss 8.5.1, and the second cylindrical sleeve 8.5.3 is provided with a through hole 8.5.2 corresponding to the first cylindrical sleeve 8.3.3.
[0026] This application includes a first hydraulic mechanism, a second hydraulic mechanism, and a third combined oil circuit 10 connecting the two. Under the action of the first hydraulic pump drive device 2 and the first hydraulic pump 3, oil is drawn in from the pump group inlet 1. The oil flows between the first hydraulic pump 3 and the first hydraulic pump drive device 2. At this time, some oil enters from the first hydraulic pump suction port 4 under the action of the first hydraulic pump 3 and is discharged from the first hydraulic pump outlet 6. It flows through the second combined oil circuit 9 to the third combined oil circuit 10. At the same time, when the second hydraulic pump 12 of the second hydraulic mechanism is working, it will draw oil from the third combined oil circuit 10. The oil pressure overcomes the force of the spring 8.2, causing the first check valve 8 to open. The oil flows through the first combined oil circuit 7 and through the first check valve 8 to the third combined oil circuit 10. Then, under the action of the second hydraulic pump drive device 11 and the second hydraulic pump 12, the oil enters from the inlet 13 of the second hydraulic pump and is sent out from the outlet 16 of the second hydraulic pump. At the same time, the oil overcomes the spring force of the second check valve 19, causing the second check valve to open and the oil to be discharged from the pump group outlet 18. By controlling the first hydraulic pump 3 and the second hydraulic pump 12, the hydraulic pressure is regulated. The setting of the first bridge oil circuit 5 and the second bridge oil circuit 14 can not only provide oil, but also ensure that this application can still work stably when one of the first hydraulic pump 3 or the second hydraulic pump 12 is damaged and stops working, and reliably and stably provide oil with a certain pressure and flow rate to downstream users. The first check valve 8 includes a fixed seat 8.6, in which a first spring seat 8.1 is provided. The first spring seat 8.1 is connected to a second spring seat 8.3.1 of the valve core 8.3 via a spring 8.2. The oil pressure overcomes the spring force of the spring 8.2, causing the first cylindrical sleeve 8.3.3 to move relative to the second cylindrical sleeve 8.5.3. Oil flows through the through hole 8.5.2, allowing the oil to pass through the first check valve 8. A sealing ring groove 8.3.5 is provided on the lower side of the spring seat boss 8.3.4 for installing the sealing ring 8.4. The spring seat boss 8.3.4 achieves a sealing fit with the valve sleeve 8.5 through the sealing ring 8.4. The second check valve 19 has the same structure as the first check valve 8, allowing oil to pass in one direction, ensuring stable and reliable operation.
Claims
1. A hydraulic pump flow boosting control mechanism, characterized in that: Includes a housing (20), the upper inner side of the housing (20) is provided with a third combined oil passage (10), the lower side of the third combined oil passage (10) is provided with a first hydraulic mechanism, and the side of the first hydraulic mechanism is provided with a second hydraulic mechanism for regulating and supplying oil to the first hydraulic mechanism; The first hydraulic mechanism includes a first hydraulic pump (3), a first hydraulic pump drive device (2) for driving the first hydraulic pump (3) is provided on the lower side of the first hydraulic pump (3), a pump group inlet (1) is provided on the lower side of the first hydraulic pump drive device (2), a first hydraulic pump outlet (6) and a first hydraulic pump suction port (4) are provided on the upper and lower sides of the first hydraulic pump (3), a second combined oil circuit (9) connecting the third combined oil circuit (10) is provided on the upper side of the first hydraulic pump outlet (6), a first bridge oil circuit (5) is provided on one side of the first hydraulic pump (3), the lower side of the first bridge oil circuit (5) is connected to the oil circuit between the first hydraulic pump (3) and the first hydraulic pump drive device (2), a first combined oil circuit (7) is provided on the upper side of the first bridge oil circuit (5), and a first check valve (8) connecting the third combined oil circuit (10) is provided on the upper side of the first combined oil circuit (7). The second hydraulic mechanism includes a second hydraulic pump drive device (11) located below the third combined oil circuit (10), a second hydraulic pump (12) located below the second hydraulic pump drive device (11), a second hydraulic pump inlet (13) and a second hydraulic pump outlet (16) located on the upper and lower sides of the second hydraulic pump (12), a fifth combined oil circuit (17) located below the second hydraulic pump outlet (16), a pump group outlet (18) located below the fifth combined oil circuit (17), a second bridge oil circuit (14) located on one side of the second hydraulic pump (12), the upper side of the second bridge oil circuit (14) being connected to the oil circuit between the second hydraulic pump drive device (11) and the second hydraulic pump (12), a fourth combined oil circuit (15) located below the second bridge oil circuit (14), and a second check valve (19) connected to the pump group outlet (18) located below the fourth combined oil circuit (15).
2. The hydraulic pump flow boosting control mechanism according to claim 1, characterized in that: The first one-way valve (8) includes a fixed seat (8.6), a first spring seat (8.1) is provided in the fixed seat (8.6), a spring (8.2) is provided on the first spring seat (8.1), the lower end of the spring (8.2) is connected to the valve core (8.3), the lower outer side of the valve core (8.3) is provided with a valve sleeve (8.5) installed on the fixed seat (8.6), and the upper end of the valve sleeve (8.5) is provided with a sealing ring (8.4) for sealing the valve sleeve (8.5) and the valve core (8.3).
3. The hydraulic pump flow boosting control mechanism according to claim 2, characterized in that: The valve core (8.3) includes a second spring seat (8.3.1) for connecting with the spring (8.2). The second spring seat (8.3.1) has a first cylindrical sleeve (8.3.3) on its lower side. The first cylindrical sleeve (8.3.3) has a first oil passage hole (8.3.2) inside. The second spring seat (8.3.1) has a spring seat boss (8.3.4) on its outer side that corresponds to the valve sleeve (8.5). The spring seat boss (8.3.4) has a sealing ring groove (8.3.5) on its lower side for installing the sealing ring (8.4).
4. The hydraulic pump flow boosting control mechanism according to claim 3, characterized in that: The valve sleeve (8.5) includes a second cylindrical sleeve (8.5.3), with a valve sleeve boss (8.5.1) on the outer side of the upper end of the second cylindrical sleeve (8.5.3), and a through hole (8.5.2) corresponding to the first cylindrical sleeve (8.3.3) inside the second cylindrical sleeve (8.5.3).
Citation Information
Patent Citations
Hydraulic pump
CN117231456A
Energy storage pressure adjustable speed-increasing dual-pump confluence device
CN201615097U