Hydraulic pump liquid flow pressurization control mechanism

Abstract

The hydraulic pump liquid flow pressurization control mechanism comprises a shell (20), the upper end of the inner side of the shell (20) is provided with a third combined oil way (10), one side of the lower end of the third combined oil way (10) is provided with a first hydraulic mechanism, and one side of the first hydraulic mechanism is provided with a second hydraulic mechanism used for conducting pressure regulation and oil supply on the first hydraulic mechanism. The device has the advantages of convenience in power adjustment and stability and reliability in operation.

Description

Technical Field

[0001] The invention relates to a hydraulic pump control mechanism, in particular to a hydraulic pump fluid pressure boosting control mechanism. Background Art

[0002] Aircraft have very strict weight control on aviation airborne products and place increasingly higher demands on their working reliability, which creates an integrated requirement for hydraulic pump design. For example, a plunger pump with a through-shaft internal support usually drives an oil replenishment hydraulic pump in series at the extended end of its shaft to improve the plunger pump's oil absorption capacity, avoid cavitation and air suction, and increase its service life. However, in some application scenarios, such as a certain type of aircraft, due to weight and volume restrictions, it is impossible to install an oil replenishment hydraulic pump in front of the hydraulic pump, and such a structure has a low degree of integration and is prone to failure. Summary of the invention

[0003] The purpose of the present invention is to provide a hydraulic pump fluid pressure boosting control mechanism, which has the advantages of convenient power regulation and stable and reliable operation.

[0004] The technical solution of the present invention is a hydraulic pump fluid flow boost control mechanism, comprising a shell, a third combined oil circuit is provided at the upper end of the inner side of the shell, a first hydraulic mechanism is provided on one side of the lower end of the third combined oil circuit, and a second hydraulic mechanism for regulating the pressure and supplying oil to the first hydraulic mechanism is provided on one side of the first hydraulic mechanism.

[0005] In the aforementioned hydraulic pump fluid flow boost control mechanism, the first hydraulic mechanism includes a first hydraulic pump, a first hydraulic pump driving device for driving the first hydraulic pump is provided at the lower side of the first hydraulic pump, a pump group inlet is provided at the lower side of the first hydraulic pump driving device, a first hydraulic pump outlet and a first hydraulic pump suction port are provided at the upper and lower sides of the first hydraulic pump respectively, a second combined oil circuit connected to the third combined oil circuit is provided at the upper side of the first hydraulic pump outlet, a third combined oil circuit, 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 driving device, a first combined oil circuit is provided at the upper side of the first bridge oil circuit, and a first check valve connected to the third combined oil circuit is provided at the upper side of the first combined oil circuit.

[0006] In the aforementioned hydraulic pump fluid flow boost control mechanism, the second hydraulic mechanism is located in the second hydraulic pump driving device at the lower side of the third combined oil circuit, a second hydraulic pump is provided at the lower side of the second hydraulic pump driving device, a second hydraulic pump inlet and a second hydraulic pump outlet are provided at the upper and lower sides of the second hydraulic pump respectively, a fifth combined oil circuit is provided at the lower side of the second hydraulic pump outlet, a pump group outlet is provided at the lower side of the fifth combined oil circuit, a second bridge oil circuit is provided at 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 driving device and the second hydraulic pump, a fourth combined oil circuit is provided at the lower side of the second bridge oil circuit, and a second one-way valve connected to the pump group outlet is provided at the lower side of the fourth combined oil circuit.

[0007] In the aforementioned hydraulic pump fluid flow boost control mechanism, the first one-way valve includes a fixed seat, a first spring seat is provided in the fixed seat, a spring is provided on the first spring seat, the lower end of the spring is connected to the valve core, a valve sleeve installed on the fixed seat is provided 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 is provided on the upper end of the valve sleeve.

[0008] In the aforementioned hydraulic pump fluid flow boost control mechanism, the valve core includes a second spring seat for connecting with a spring, a first cylindrical sleeve is provided at the lower side of the second spring seat, a first oil hole is provided in the first cylindrical sleeve, a spring seat boss corresponding to the valve sleeve is provided at the outer side of the second spring seat, and a sealing ring groove for installing a sealing ring is provided at the lower side of the spring seat boss.

[0009] In the aforementioned hydraulic pump fluid boost control mechanism, the valve sleeve comprises a second cylindrical sleeve, a valve sleeve boss is arranged on the outer side of the upper end of the second cylindrical sleeve, and a through hole corresponding to the first cylindrical sleeve is arranged in the second cylindrical sleeve.

[0010] Compared with the prior art, the present invention has the following advantages:

[0011] The present application is provided with a device for adjusting the oil pressure of the first hydraulic mechanism on one side of the first hydraulic mechanism, so that the oil pressure adjustment is convenient and the integration is high, which is conducive to reducing the required space. When the hydraulic pump or the hydraulic pump driving device in one of the first hydraulic mechanism and the second hydraulic mechanism fails, the present application can still reliably and stably provide oil of a certain pressure and flow rate to downstream users, and has good reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the present invention;

[0013] Figure 2 is a schematic structural diagram of a first one-way valve of the present invention;

[0014] Figure 3 It is a structural schematic diagram of the valve core of the present invention;

[0015] Figure 4It is a structural schematic diagram of the valve sleeve of the present invention;

[0016] Figure 5 is a cross-sectional view of the present invention;

[0017] Figure 6 It is a cross-sectional view of the present invention.

[0018] The markings in the attached drawings are: 1-pump group inlet, 2-first hydraulic pump driving device, 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 one-way valve, 9-second combined oil circuit, 10-third combined oil circuit, 11-second hydraulic pump driving device, 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 group outlet, 19-second one-way 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 through 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 DESCRIPTION

[0019] The present invention is further described below in conjunction with embodiments, but is not intended to be limiting of the present invention.

[0020] Embodiment. A hydraulic pump fluid pressure boost control mechanism, comprising: Figure 1-6 As shown, it includes a shell 20, a third combined oil circuit 10 is provided at the upper inner end of the shell 20, a first hydraulic mechanism is provided at one side of the lower end of the third combined oil circuit 10, and a second hydraulic mechanism for regulating the pressure and supplying oil to the first hydraulic mechanism is provided at one side of the first hydraulic mechanism.

[0021] The first hydraulic mechanism comprises a first hydraulic pump 3, a first hydraulic pump driving device 2 for driving the first hydraulic pump 3 is provided at the lower side of the first hydraulic pump 3, a pump group inlet 1 is provided at the lower side of the first hydraulic pump driving device 2, a first hydraulic pump outlet 6 and a first hydraulic pump suction port 4 are provided at the upper and lower sides of the first hydraulic pump 3 respectively, a second combined oil circuit 9 connected to the third combined oil circuit 10 is provided at the upper side of the first hydraulic pump outlet 6, the third combined oil circuit 10, a first bridge oil circuit 5 is provided at 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 driving device 2, a first combined oil circuit 7 is provided at the upper side of the first bridge oil circuit 5, and a first check valve 8 connected to the third combined oil circuit 10 is provided at the upper side of the first combined oil circuit 7.

[0022] The second hydraulic mechanism is located at the second hydraulic pump driving device 11 at the lower side of the third combined oil circuit 10, a second hydraulic pump 12 is provided at the lower side of the second hydraulic pump driving device 11, a second hydraulic pump 12 is provided at the upper and lower sides of the second hydraulic pump 12 respectively, a fifth combined oil circuit 17 is provided at the lower side of the second hydraulic pump outlet 16, a pump group outlet 18 is provided at the lower side of the fifth combined oil circuit 17, a second bridge oil circuit 14 is provided at 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 driving device 11 and the second hydraulic pump 12, a fourth combined oil circuit 15 is provided at the lower side of the second bridge oil circuit 14, a second one-way valve 19 connected to the pump group outlet 18 is provided at the lower side of the fourth combined oil circuit 15.

[0023] The first one-way valve 8 comprises a fixed seat 8.6, in which a first spring seat 8.1 is arranged, on which a spring 8.2 is arranged, the lower end of the spring 8.2 is connected to a valve core 8.3, the outer side of the lower end 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.

[0024] The valve core 8.3 comprises a second spring seat 8.3.1 for connecting with the spring 8.2, a first cylindrical sleeve 8.3.3 is arranged at the lower side of the second spring seat 8.3.1, a first oil hole 8.3.2 is arranged in the first cylindrical sleeve 8.3.3, a spring seat boss 8.3.4 corresponding to the valve sleeve 8.5 is arranged at the outer side of the second spring seat 8.3.1, and a sealing ring groove 8.3.5 for installing the sealing ring 8.4 is arranged at the lower side of the spring seat boss 8.3.4.

[0025] The valve sleeve 8.5 comprises a second cylindrical sleeve 8.5.3, a valve sleeve boss 8.5.1 is arranged 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 is arranged inside the second cylindrical sleeve 8.5.3.

[0026] The present application includes a first hydraulic mechanism, a second hydraulic mechanism and a third combined oil circuit 10 connecting the two. The oil is sucked from the pump group inlet 1 under the action of the first hydraulic pump driving device 2 and the first hydraulic pump 3, and the oil will flow between the first hydraulic pump 3 and the first hydraulic pump driving device 2. At this time, part of the oil enters from the first hydraulic pump suction port 4 under the action of the first hydraulic pump 3, is discharged from the first hydraulic pump outlet 6, and flows to the third combined oil circuit 10 through the second combined oil circuit 9. At the same time, when the second hydraulic pump 12 of the second hydraulic mechanism is working, the oil in the third combined oil circuit 10 will be extracted, and the oil pressure will overcome the action of the spring 8.2 to open the first one-way valve 8, and the oil will flow to the third combined oil circuit 10 through the first combined oil circuit 7 and the first one-way valve 8. Then, under the action of the second hydraulic pump driving device 11 and the second hydraulic pump 12, the oil enters from the second hydraulic pump inlet 13 and is sent out from the second hydraulic pump outlet 16. At the same time, the oil will overcome the spring force of the second one-way valve 19, so that the second one-way valve opens, and the oil is discharged from the pump group outlet 18. The oil pressure is regulated by controlling the first hydraulic pump 3 and the second hydraulic pump 12. The setting of the first bridge oil circuit 5 and the second bridge oil circuit 14 can not only provide oil, but also enable the application to still work stably when one of the hydraulic pumps of the first hydraulic pump 3 or the second hydraulic pump 12 is damaged and stops working, so as to reliably and stably provide oil of a certain pressure and flow rate to downstream users. The first one-way valve 8 comprises a fixed seat 8.6, in which a first spring seat 8.1 is arranged, and the first spring seat 8.1 is connected to the second spring seat 8.3.1 of the valve core 8.3 via a spring 8.2, and the first cylindrical sleeve 8.3.3 moves relative to the second cylindrical sleeve 8.5.3 by overcoming the elastic force of the spring 8.2 through the oil pressure, and the oil flows through the through hole 8.5.2, so that the oil passes through the first one-way valve 8, and a sealing ring groove 8.3.5 is arranged on the lower side of the spring seat boss 8.3.4 for installing the sealing ring 8.4, and the spring seat boss 8.3.4 realizes the matching seal of the pre-valve sleeve 8.5 through the sealing ring 8.4. The structure of the second one-way valve 19 is consistent with the first one-way valve 8, so that the oil can pass in one direction, and the operation is stable and reliable.

Claims

1. A hydraulic pump fluid pressure boost control mechanism, characterized in that: It comprises a shell (20), wherein a third combined oil circuit (10) is provided at the upper inner end of the shell (20), a first hydraulic mechanism is provided at one side of the lower end of the third combined oil circuit (10), and a second hydraulic mechanism for regulating the pressure and supplying oil to the first hydraulic mechanism is provided at one side of the first hydraulic mechanism.

2. A hydraulic pump fluid pressure boosting control mechanism according to claim 1, characterized in that: The first hydraulic mechanism comprises a first hydraulic pump (3), a first hydraulic pump driving device (2) for driving the first hydraulic pump (3) is provided at the lower side of the first hydraulic pump (3), a pump group inlet (1) is provided at the lower side of the first hydraulic pump driving device (2), a first hydraulic pump outlet (6) and a first hydraulic pump oil suction port (4) are provided at the upper and lower sides of the first hydraulic pump (3), a second combined oil circuit (9) connected to a third combined oil circuit (10) is provided at the upper side of the first hydraulic pump outlet (6), and a third combined oil circuit (10), a first bridge oil circuit (5) is provided at 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 driving device (2), a first combined oil circuit (7) is provided at the upper side of the first bridge oil circuit (5), and a first check valve (8) connected to the third combined oil circuit (10) is provided at the upper side of the first combined oil circuit (7).

3. A hydraulic pump fluid pressure boost control mechanism according to claim 1, characterized in that: The second hydraulic mechanism is located at the second hydraulic pump driving device (11) at the lower side of the third combined oil circuit (10); a second hydraulic pump (12) is provided at the lower side of the second hydraulic pump driving device (11); a second hydraulic pump inlet (13) and a second hydraulic pump outlet (16) are provided at the upper and lower sides of the second hydraulic pump (12), respectively; a fifth combined oil circuit (17) is provided at the lower side of the second hydraulic pump outlet (16); a pump group outlet (18) is provided at the lower side of the fifth combined oil circuit (17); a second bridge oil circuit (14) is provided at 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 driving device (11) and the second hydraulic pump (12); a fourth combined oil circuit (15) is provided at the lower side of the second bridge oil circuit (14); a second check valve (19) connected to the pump group outlet (18) is provided at the lower side of the fourth combined oil circuit (15).

4. A hydraulic pump fluid pressure boost control mechanism according to claim 2, characterized in that: The first one-way valve (8) comprises a fixed seat (8.6), a first spring seat (8.1) is arranged in the fixed seat (8.6), a spring (8.2) is arranged on the first spring seat (8.1), the lower end of the spring (8.2) is connected to the valve core (8.3), a valve sleeve (8.5) mounted on the fixed seat (8.6) is arranged on the outer side of the lower end of the valve core (8.3), and a sealing ring (8.4) for sealing the valve sleeve (8.5) and the valve core (8.3) is arranged on the upper end of the valve sleeve (8.5).

5. A hydraulic pump fluid pressure boosting control mechanism according to claim 4, characterized in that: The valve core (8.3) comprises a second spring seat (8.3.1) for connecting with a spring (8.2); a first cylindrical sleeve (8.3.3) is provided at the lower side of the second spring seat (8.3.1); a first oil hole (8.3.2) is provided in the first cylindrical sleeve (8.3.3); a spring seat boss (8.3.4) corresponding to the valve sleeve (8.5) is provided at the outer side of the second spring seat (8.3.1); a sealing ring groove (8.3.5) for installing a sealing ring (8.4) is provided at the lower side of the spring seat boss (8.3.4).

6. A hydraulic pump fluid pressure boost control mechanism according to claim 4, characterized in that: The valve sleeve (8.5) comprises a second cylindrical sleeve (8.5.3), a valve sleeve boss (8.5.1) is arranged 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) is arranged inside the second cylindrical sleeve (8.5.3).

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