CN214247865U

CN214247865U - Quick oil supplementing supercharging mechanism

Info

Publication number: CN214247865U
Application number: CN202122004055.8U
Authority: CN
Inventors: 黄泰波; 林波; 陈池波; 唐德刚
Original assignee: Chengdu Ferguson Hydraulic Electromechanical Co ltd
Current assignee: Chengdu Ferguson Hydraulic Electromechanical Co ltd
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2021-09-21
Anticipated expiration: 2031-08-25

Abstract

The utility model discloses a mend oily booster mechanism fast, including low pressure cylinder, high pressure cylinder and piston rod, be equipped with on the lateral wall of low pressure cylinder and mend oily oil return opening, the exit of low pressure cylinder is equipped with pressure boost cylinder, is equipped with pressure boost chamber and mend oily oil return runner in the pressure boost cylinder, pressure boost chamber and mend oily oil return runner all with the export intercommunication, pressure boost chamber and mend oily oil return runner still with high pressure cylinder's import intercommunication, be equipped with the hydraulic outlet on pressure boost cylinder's the lateral wall, the piston rod passes first end cover, pressure boost chamber and extensible in the high pressure cylinder in proper order, and the piston rod is equipped with first sealing member with pressure boost chamber and high pressure cylinder's import interference fit on being located the piston rod of low pressure cylinder, and the inside wall transition fit of first sealing member and low pressure cylinder, first sealing member are along with the piston rod removal. The utility model discloses to mend oil, pressure boost, oil return integrated design, save space, remove through motor direct drive piston rod, realize mending oil and pressure boost operation, finally realize the wheel brake action.

Description

Quick oil supplementing supercharging mechanism

Technical Field

The utility model relates to an aircraft brake pressure control valve technical field, concretely relates to be used for aircraft brake with mend oily booster mechanism fast.

Background

At present, a traditional hydraulic system is adopted for controlling the brake pressure of an airplane to realize brake pressure transmission through a pipeline, the airplane brake pressure control system comprises a hydraulic oil source, a control valve group, a hydraulic pipeline, an electric control system and the like, the airplane brake pressure control system is large in size, the hydraulic oil source is far away from a brake wheel, a hydraulic oil pipe needs to be arranged on site, the workload is large, and if the oil pipe breaks down, the maintenance is not easy, and the telex operation is not convenient to implement.

Disclosure of Invention

An object of the utility model is to provide a mend oily booster mechanism fast, this mechanism can replace traditional brake hydraulic system, with oil storage, benefit oil, pressure boost, oil return integrated design, saves space, and accessible motor direct drive piston rod removes, realizes mending oil and pressure boost operation, finally realizes the wheel brake action.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a quick oil supplementing supercharging mechanism comprises a low-pressure oil cylinder, a high-pressure oil cylinder and a piston rod, wherein an oil supplementing oil return port is formed in the side wall of the low-pressure oil cylinder, one end of the low-pressure oil cylinder is opened and provided with a first end cover, the other end of the low-pressure oil cylinder is provided with an outlet, a supercharging oil cylinder is arranged at the outlet, a supercharging cavity and an oil supplementing oil return flow passage are arranged in the supercharging oil cylinder, the supercharging cavity and the oil supplementing oil return flow passage are communicated with the outlet, the supercharging cavity and the oil supplementing oil return flow passage are also communicated with an inlet located at one end of the high-pressure oil cylinder, a second end cover is arranged at the other end of the high-pressure oil cylinder, and a hydraulic output port is formed in the side wall of the high-pressure oil cylinder; the piston rod penetrates through the first end cover and the pressurization cavity in sequence and can extend into the high-pressure oil cylinder, the piston rod is in clearance fit with the pressurization cavity and an inlet of the high-pressure oil cylinder, a first sealing element is arranged on the piston rod located in the low-pressure oil cylinder and in interference fit with the inner side wall of the low-pressure oil cylinder, the first sealing element moves along with the piston rod, and the moving distance of the first sealing element is the distance between the first end cover and the oil supplementing and returning port.

The utility model discloses a pressure boost principle: the piston rod moves towards the high-pressure oil cylinder, the piston pushes oil to move towards the hydraulic output port, and the hydraulic output port is communicated with the brake actuating cylinder, so that the oil is quickly supplemented to the brake actuating cylinder, the required brake pressure is quickly established, and the braking action of airplane wheels of the airplane is realized;

the utility model discloses an oil supplementing and returning principle: when the brake pressure needs to be relieved, the piston rod moves towards the low-pressure oil cylinder, and oil in the aircraft brake actuating cylinder flows into the low-pressure oil cylinder through the oil supplementing and returning flow passage.

Furthermore, a connecting piece is arranged on the first sealing piece, a second sealing piece is arranged on the connecting piece, the first sealing piece and the second sealing piece are in interference fit with the inner side wall of the low-pressure oil cylinder, the first sealing piece is close to the end cover, and an oil passing hole is formed in the connecting piece.

Furthermore, a sealing ring is arranged at the position, close to the low-pressure oil cylinder, of the pressurization cavity, so that oil can flow into and flow out of the oil supplementing and returning flow channel.

Furthermore, the oil supplementing and returning port is connected with an oil storage tank, so that sufficient oil in the oil cylinder is ensured.

The utility model discloses following beneficial effect has:

(1) the oil storage, oil supplement, pressurization and oil return are integrally designed, the structure is ingenious, and the conception is novel; the western-style vehicle is arranged near the airplane wheel, a hydraulic pipeline from a hydraulic system to the airplane wheel is omitted, the cable is adopted to control the motor to realize braking operation, the airplane can conveniently realize telex operation, the system response is fast, and the faults of 'running, overflowing, dripping and leaking' of the traditional hydraulic system are avoided;

(2) the piston rod can be driven to move back and forth by the motor, so that electric braking is realized;

(3) the product design adopts the principles of standardization, modularization and integration, and has the advantages of high safety performance, long service life and the like.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the pressurization state of the present invention.

Fig. 3 is a schematic view of the pressure release state of the present invention.

The labels in the figure are: 10. a low-pressure oil cylinder; 11. an oil supplementing and returning port; 12. a first end cap; 20. a high-pressure oil cylinder; 21. a second end cap; 22. a hydraulic output port; 30. a booster cylinder; 31. a pressurizing cavity; 32. an oil supplementing and returning flow passage; 33. a seal ring; 40. a piston rod; 41. a first seal member; 42. a second seal member; 43. a connecting member; 44. an oil passing hole; 50. an oil storage tank.

Detailed Description

It should be noted that the terms "low pressure" and "high pressure" are used to distinguish between two cylinders and the pressure difference between the two cylinders, and are only used for convenience of description of the present invention and to simplify the description, but not to indicate or suggest how many pressure values must be reached in the indicated cylinder, and therefore, the present invention should not be construed as being limited thereto.

The quick oil supplementing supercharging mechanism provided by the embodiment is mainly applied to an aircraft brake system, replaces a traditional brake hydraulic system, and is used for supplementing oil or refluxing oil to a brake actuating cylinder.

As shown in fig. 1, the quick oil supplementing and pressurizing mechanism according to this embodiment includes a low-pressure oil cylinder 10, a high-pressure oil cylinder 20, a pressurizing oil cylinder 30, a piston rod 40, and an oil storage tank 50, wherein an oil supplementing and returning port 11 is formed in a side wall of the low-pressure oil cylinder 10, the oil supplementing and returning port 11 is used for connecting the oil storage tank 50, and oil is supplemented or returned in the mechanism through oil stored in the oil storage tank 50, so as to ensure that the oil is sufficient.

One end of the low-pressure oil cylinder 10 is opened and provided with a first end cover 12, the first end cover 12 can be installed at one end of the low-pressure oil cylinder 10 in a conventional mode of threads and the like, in order to guarantee the sealing performance in the oil cylinder, a sealing gasket can be arranged in the first end cover 12, and the first end cover 12 can be opened to maintain the interior of the low-pressure oil cylinder 10. The other end of the low-pressure oil cylinder 10 is provided with an outlet, the outlet is positioned in the middle of the end face of the low-pressure oil cylinder 10, and the end face is fixedly provided with a pressurizing oil cylinder 30.

Be equipped with pressure boost chamber 31 and benefit oil return runner 32 in the pressure boost hydro-cylinder 30, pressure boost chamber 31 is located pressure boost hydro-cylinder 30's axis to communicate with the export of low pressure hydro-cylinder 10, benefit the outside that oil return runner 32 is located pressure boost chamber 31, also communicate with the export of low pressure hydro-cylinder 10, fluid flows in and flows out through benefit oil return runner 32, pressure boost chamber 31 and the import intercommunication of benefit oil return runner 32 of pressure boost hydro-cylinder 30 still with high pressure hydro-cylinder 20, the import size of high pressure hydro-cylinder 20 is unanimous with pressure boost chamber 31 export size of pressure boost hydro-cylinder 30, and the lateral wall of high pressure hydro-cylinder 20 is equipped with hydraulic pressure delivery outlet 22, hydraulic pressure delivery outlet 22 and brake actuating cylinder intercommunication realize carrying fluid to brake actuating cylinder or backward flow.

The other end of the high-pressure oil cylinder 20 is provided with an opening and a second end cover 21, the second end cover 21 can be installed on the high-pressure oil cylinder 20 in a conventional mode such as a thread mode, in order to guarantee the sealing performance in the oil cylinder, a sealing gasket can be arranged in the second end cover 21, and the interior of the high-pressure oil cylinder 20 can be maintained by opening the second end cover 21.

One end of the piston rod 40 passes through the middle part of the first end cover 12 and extends into the high-pressure oil cylinder 20, the piston rod 40 sequentially passes through the low-pressure oil cylinder 10, the pressurizing cavity 31 and the high-pressure oil cylinder 20, the piston rod 40 is in clearance fit with the pressurizing cavity 31 and the inlet of the high-pressure oil cylinder 20, when the piston rod 40 moves towards the high-pressure oil cylinder 20, the oil is ensured to enter the brake actuating cylinder through the hydraulic output port 22, a first sealing element 41 is further arranged on the piston rod 40 of the low-pressure oil cylinder 10, the first sealing element 41 is in interference fit with the inner side wall of the low-pressure oil cylinder 10, the first sealing element 41 moves along with the movement of the piston rod 40, the moving distance is between the first end cover 12 and the oil supplementing return port 11, when the piston rod 40 moves towards the high-pressure oil cylinder 20, the first sealing element 41 can gradually reduce the oil in the low-pressure oil cylinder 10, so that the oil enters the high-pressure oil cylinder 20 through the oil supplementing return flow passage 32, and further, the oil in the high-pressure oil cylinder 20 is abundant, on the contrary, when the piston rod 40 moves toward the low pressure cylinder 10, the first sealing element 41 may gradually increase the volume inside the low pressure cylinder 10, so that the oil supplementing return flow passage 32 returns to the low pressure cylinder 10. In order to ensure that oil can only flow in and out from the oil supplementing and returning flow passage 32, the pressurizing cavity 31 is provided with a sealing ring 33 close to the low-pressure oil cylinder 10.

The first sealing element 41 is integrally formed with a connecting element 43, which is connected to the inner wall of the low-pressure cylinder 10 without contacting, and is provided with an oil passing hole 44, the connecting element 43 is integrally formed with a second sealing element 42, the second sealing element 42 is in interference fit with the inner side wall of the low-pressure cylinder 10, and the second sealing element 42 is far away from the first end cover 12 compared with the first sealing element 41.

As shown in fig. 1, in the oil replenishing state of the present embodiment, the oil in the oil storage tank 50 enters the low-pressure cylinder 10 through the oil replenishing return port 11 and the oil hole 44 on the connecting piece 43, and then enters the high-pressure cylinder 20 through the oil replenishing return flow passage 32, so that the oil in the cylinder is sufficient before pressurization.

As shown in fig. 2, in the pressurization state of this embodiment, the belt-driven piston rod 40 can be moved toward the high-pressure cylinder 20 by an electric driving device such as a motor, and because the piston rod 40 is in interference fit with the inlet of the high-pressure cylinder 20, the oil can only move toward the hydraulic output port 22, so as to enter the brake actuating cylinder communicated with the hydraulic output port 22, thereby rapidly supplying the oil to the brake actuating cylinder, rapidly establishing the required brake pressure, and achieving the braking action of the airplane wheel.

As shown in fig. 3, in the pressure relief state of the present embodiment, the belt can be driven by the motor or other electric driving device to move the piston rod 40 toward the low pressure cylinder 10, and since the piston rod 40 and the pressurizing chamber 31 are sealed by the seal ring 33, the oil can only move toward the oil supply return passage 32 after flowing out from the brake actuator cylinder, and then enters the low pressure cylinder 10.

This embodiment is through adopting the two piston modes of establishing ties to realize mending oil and pressure boost and go on simultaneously, and accessible motor drive piston rod 40 removes, realizes electric brake, cancels the hydraulic pressure pipeline, and through signal of telecommunication control, response time is short, retrencies the structure, reduces structure overall dimension, improves system reliability.

The above is only the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any modification and replacement based on the technical solution and the utility model should be covered in the protection scope of the present invention.

Claims

1. The utility model provides a quick oil supplementing supercharging mechanism which characterized in that: the oil cylinder structure comprises a low-pressure oil cylinder (10), a high-pressure oil cylinder (20) and a piston rod (40), wherein an oil supplementing and returning port (11) is formed in the side wall of the low-pressure oil cylinder (10), one end of the low-pressure oil cylinder (10) is opened and is provided with a first end cover (12), the other end of the low-pressure oil cylinder is provided with an outlet, a boosting oil cylinder (30) is arranged at the outlet, a boosting cavity (31) and an oil supplementing and returning flow passage (32) are arranged in the boosting oil cylinder (30), the boosting cavity (31) and the oil supplementing and returning flow passage (32) are both communicated with the outlet, the boosting cavity (31) and the oil supplementing and returning flow passage (32) are also communicated with an inlet positioned at one end of the high-pressure oil cylinder (20), a second end cover (21) is arranged at the other end of the high-pressure oil cylinder (20), and a hydraulic output port (22) is formed in the side wall of the high-pressure oil cylinder (20); the piston rod (40) sequentially penetrates through the first end cover (12) and the pressurization cavity (31) and can extend into the high-pressure oil cylinder (20), the piston rod (40) is in clearance fit with inlets of the pressurization cavity (31) and the high-pressure oil cylinder (20), a first sealing element (41) is arranged on the piston rod (40) located in the low-pressure oil cylinder (10), the first sealing element (41) is in clearance fit with the inner side wall of the low-pressure oil cylinder (10), the first sealing element (41) moves along with the piston rod (40), and the moving distance of the first sealing element is the distance between the first end cover (12) and the oil supplementing and returning port (11).

2. The quick oil-replenishing supercharging mechanism according to claim 1, characterized in that: the first sealing element (41) is provided with a connecting element (43), the connecting element (43) is provided with a second sealing element (42), the second sealing element (42) is in interference fit with the inner side wall of the low-pressure oil cylinder (10), the first sealing element (41) is close to the end cover, and the connecting element (43) is provided with an oil passing hole (44).

3. The quick oil-replenishing supercharging mechanism according to claim 1, characterized in that: and a sealing ring (33) is arranged at the position of the pressurization cavity (31) close to the low-pressure oil cylinder (10).

4. The quick oil-replenishing supercharging mechanism according to claim 1, characterized in that: the oil supplementing and returning port (11) is connected with an oil storage tank (50).