High-integration pressurizing oil tank assembly for hydraulic pump source device

Abstract

The utility model discloses a highly integrated supercharged oil tank component for a hydraulic pump source device, which comprises a hydraulic pump shell and an oil tank shell fixed on the hydraulic pump shell, a rubber diaphragm is arranged at the joint of the hydraulic pump shell and the oil tank shell, and a diaphragm fixing plate is arranged on one side of the rubber diaphragm. A guide rod capable of moving relative to an inner shaft of a hydraulic pump in the pressure pump shell is arranged on one side of the diaphragm fixing plate, a hydraulic guide rod is further arranged on the diaphragm fixing plate, and a sensor matched with the hydraulic guide rod to reflect the oil quantity in the oil tank shell is arranged in the hydraulic pump shell. A piston is arranged on the other side of the rubber diaphragm, a spring seat is arranged on one side of the piston, a spring connected with the bottom end of the oil tank shell is arranged on one side of the spring seat, and an oil liquid cavity is formed between the rubber diaphragm and the hydraulic pump shell. The hydraulic pump shell and the oil tank shell are combined together, the integrated design is adopted, the weight of the device is reduced, the guide rod moves relative to the blind hole in the hydraulic guide rod, the positioning and guiding effects are achieved, the piston is prevented from shifting, and safety is good.

Description

Technical Field

[0001] The utility model relates to a booster oil tank assembly, in particular to a highly integrated booster oil tank assembly for a hydraulic pump source device. Background Art

[0002] The aviation hydraulic pump source device is mainly composed of components such as motors, hydraulic pumps, and booster tanks. Its main function is to convert the electrical energy on the aircraft into hydraulic energy. On the one hand, it is used in small hydraulic subsystems to complete specific actions such as aircraft weapon ejection and landing gear retraction and extension; on the other hand, it serves as an emergency hydraulic energy source, providing energy when the main hydraulic system fails so that the relevant actuators can complete the specified actions to ensure the safety of the aircraft. As aircraft develop towards high speed, high maneuverability and long flight time, the vibration and impact values ​​of hydraulic pump source devices have increased dramatically. The existing hydraulic pump source device uses a separate structure of the booster tank assembly and the hydraulic pump, with low integration, large volume and weight, and insufficient ability to resist vibration and impact. At the same time, the booster tank cavity and the oil cavity are isolated by a piston, and the piston and the tank shell axis are mainly coaxial by the piston outer surface and the sealing ring. However, during the operation of the hydraulic pump source device, when subjected to superimposed strong vibration and large impact conditions, the tank piston is prone to deflection, resulting in abnormal wear with the tank shell, and even jamming in severe cases, making it impossible to discharge oil, resulting in hydraulic pump failure, and then causing the entire hydraulic pump source device to fail, affecting the aircraft's flight mission and safety. Utility Model Content

[0003] The purpose of the utility model is to provide a highly integrated pressurized oil tank assembly for a hydraulic pump source device, which can reduce the possibility of piston deviation and increase reliability while reducing the volume.

[0004] The technical solution of the utility model is as follows: a highly integrated booster oil tank assembly for a hydraulic pump source device, comprising a hydraulic pump housing and an oil tank housing fixed on the hydraulic pump housing, a rubber diaphragm is provided at the connection between the hydraulic pump housing and the oil tank housing, a diaphragm fixing plate is provided on one side of the rubber diaphragm, a guide rod movable relative to an inner shaft of a hydraulic pump in the pressure pump housing is provided on one side of the diaphragm fixing plate, a hydraulic guide rod is also provided on the diaphragm fixing plate, a sensor which cooperates with the hydraulic guide rod to react to the amount of oil in the oil tank housing is provided in the hydraulic pump housing; a piston is provided on the other side of the rubber diaphragm, a spring seat is provided on one side of the piston, a spring connected to the bottom end of the oil tank housing is provided on one side of the spring seat, and an oil cavity is provided between the rubber diaphragm and the hydraulic pump housing.

[0005] In the aforementioned highly integrated booster oil tank assembly for a hydraulic pump source device, the hydraulic guide rod is a hydraulic guide rod having a conical cross-sectional shape.

[0006] In the aforementioned highly integrated booster oil tank assembly for a hydraulic pump source device, a shaft sleeve with an interference fit is provided in the hydraulic pump housing, a sealing ring for fixing a sealing guide rod is provided in the shaft sleeve, a guide groove corresponding to the hydraulic guide rod is also provided in the hydraulic pump housing, an installation cavity for installing a sensor is provided on the upper side of the guide groove, and the measuring rod of the sensor is against the hydraulic guide rod; a tail end bearing corresponding to the inner shaft of the hydraulic pump is provided in the hydraulic pump housing.

[0007] In the aforementioned highly integrated booster oil tank assembly for a hydraulic pump source device, a blind hole corresponding to the guide rod is provided in the inner shaft of the hydraulic pump.

[0008] Compared with the prior art, the utility model combines the hydraulic pump housing and the oil tank housing together in an integrated design to reduce the weight of the device, and plays a positioning and guiding role by moving the guide rod relative to the blind hole in the hydraulic guide rod to prevent the piston from shifting, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of the utility model.

[0010] The markings in the accompanying drawings are: 1-hydraulic pump inner shaft, 3-guide rod, 4-hydraulic pump housing, 5-hydraulic guide rod, 6-sensor, 7-diaphragm fixing plate, 8-rubber diaphragm, 9-spring seat, 10-piston, 11-oil tank housing, 12-spring, 13-sleeve, 14-sealing ring, 15-tail end bearing, 17-oil chamber, 18-guide groove, 19-installation chamber. DETAILED DESCRIPTION

[0011] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0012] Embodiment. A highly integrated booster tank assembly for a hydraulic pump source device, comprising: Figure 1 As shown, it includes a hydraulic pump housing 4 and an oil tank housing 11 fixed on the hydraulic pump housing 4, a rubber diaphragm 8 is provided at the connection between the hydraulic pump housing 4 and the oil tank housing 11, a diaphragm fixing plate 7 is provided on one side of the rubber diaphragm 8, a guide rod 3 that can move relative to the inner shaft 1 of the hydraulic pump in the hydraulic pump housing 4 is provided on one side of the diaphragm fixing plate 7, a hydraulic guide rod 5 is also provided on the diaphragm fixing plate 7, a sensor 6 that cooperates with the hydraulic guide rod 5 to react to the oil amount in the oil tank housing 11 is provided in the hydraulic pump housing 4; a piston 10 is provided on the other side of the rubber diaphragm 8, a spring seat 9 is provided on one side of the piston 10, a spring 12 connected to the bottom end of the oil tank housing 11 is provided on one side of the spring seat 9, and an oil cavity 17 is provided between the rubber diaphragm 8 and the hydraulic pump housing 4.

[0013] The hydraulic guide rod 5 is a hydraulic guide rod with a conical cross-section.

[0014] The hydraulic pump housing 4 is provided with a shaft sleeve 13 with an interference fit, and the shaft sleeve 13 is provided with a sealing ring 14 for fixing the sealing guide rod 3. The hydraulic pump housing 4 is also provided with a guide groove 18 corresponding to the hydraulic guide rod 5, and an installation cavity 19 for installing the sensor 6 is provided on the upper side of the guide groove 18. The measuring rod of the sensor 6 is against the hydraulic guide rod 5; the hydraulic pump housing 4 is provided with a tail end bearing 15 corresponding to the inner shaft 1 of the hydraulic pump.

[0015] The inner shaft 1 of the hydraulic pump is provided with a blind hole corresponding to the guide rod 3 .

[0016] Principle of the utility model: The hydraulic pump housing 4 and the oil tank housing 11 of the present application are connected by screws, a groove for fixing the rubber diaphragm 8 is provided in the hydraulic pump housing 4, and the rubber diaphragm 8 is squeezed by the hydraulic pump housing 4 and the oil tank housing 11 to achieve fixation. A diaphragm fixing plate 7 is provided on one side of the rubber diaphragm 8, and a piston 10 is provided on the other side of the rubber diaphragm 8. The piston 10 and the diaphragm fixing plate 7 are connected by rivets. An oil cavity 17 is formed between the rubber diaphragm 8 and the hydraulic pump housing 4. The guide rod 3 on the diaphragm fixing plate 7 can cooperate with the blind hole in the inner shaft 1 of the hydraulic pump to achieve a guiding effect and prevent the piston from deflecting. In the process of adding oil to the oil cavity 17, the oil will push the rubber diaphragm 8 to compress the spring. As the amount of oil increases, the spring elastic force continues to increase, achieving the effect of pressurization. The moving distance of the piston 10 can be reacted by the cooperation of the hydraulic guide rod 5 and the sensor 6. The cross section of the hydraulic guide rod 5 is conical. In the process of the hydraulic guide rod 5 moving with the rubber diaphragm 8, the elongation length of the detection rod under the sensor 6 will change, thereby measuring the moving distance of the piston, that is, the amount of oil added or released. The sleeve 13 and the sealing ring 14 can not only support the guide rod 3, but also prevent the oil in the hydraulic pump housing 4 from entering the oil cavity 17. The tail end bearing 15 is used to support the inner shaft 1 of the hydraulic pump. When the hydraulic pump source is working, the hydraulic pump sucks oil from the oil chamber 17, and the oil is discharged from the oil chamber 17 under the action of the spring 12. The blind hole in the inner shaft 1 of the hydraulic pump will play a guiding role with the guide rod 3 to prevent the piston 10 from deflecting, and the spring 12 can play a pressurizing role.

Claims

1. A highly integrated booster tank assembly for a hydraulic pump source device, characterized in that: The invention comprises a hydraulic pump housing (4) and an oil tank housing (11) fixed on the hydraulic pump housing (4); a rubber diaphragm (8) is provided at the connection between the hydraulic pump housing (4) and the oil tank housing (11); a diaphragm fixing plate (7) is provided on one side of the rubber diaphragm (8); a guide rod (3) movable relative to an inner shaft (1) of a hydraulic pump in the hydraulic pump housing (4) is provided on one side of the diaphragm fixing plate (7); a hydraulic guide rod (5) is also provided on the diaphragm fixing plate (7); a sensor (6) for cooperating with the hydraulic guide rod (5) to react the amount of oil in the oil tank housing (11) is provided in the hydraulic pump housing (4); a piston (10) is provided on the other side of the rubber diaphragm (8); a spring seat (9) is provided on one side of the piston (10); a spring (12) connected to the bottom end of the oil tank housing (11) is provided on one side of the spring seat (9); and an oil chamber (17) is provided between the rubber diaphragm (8) and the hydraulic pump housing (4).

2. A highly integrated booster oil tank assembly for a hydraulic pump source device according to claim 1, characterized in that: The hydraulic guide rod (5) is a hydraulic guide rod with a conical cross-section.

3. A highly integrated booster oil tank assembly for a hydraulic pump source device according to claim 1, characterized in that: The hydraulic pump housing (4) is provided with a shaft sleeve (13) with an interference fit, and the shaft sleeve (13) is provided with a sealing ring (14) for fixing the sealing guide rod (3). The hydraulic pump housing (4) is also provided with a guide groove (18) corresponding to the hydraulic guide rod (5), and a mounting cavity (19) for mounting a sensor (6) is provided on the upper side of the guide groove (18), and the measuring rod of the sensor (6) is against the hydraulic guide rod (5); the hydraulic pump housing (4) is provided with a tail end bearing (15) corresponding to the inner shaft (1) of the hydraulic pump.

4. The highly integrated booster oil tank assembly for a hydraulic pump source device according to claim 1, characterized in that: The inner shaft (1) of the hydraulic pump is provided with a blind hole corresponding to the guide rod (3).

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