Pump core of steering pump

Abstract

The utility model relates to the field of power steering pumps, and discloses a steering pump core which comprises a pump body shell, an oil inlet pipe is fixedly installed on the outer surface of the pump body shell, an oil inlet end is fixedly installed at the front end of the oil inlet pipe, and an oil discharge pipe is fixedly installed on the side, close to the oil inlet pipe, of the outer surface of the pump body shell. The engine drives the belt pulley, the rotating shaft and the rotor to move, so that hydraulic oil enters the pump body shell through the oil inlet end and the oil inlet pipe, and at the moment, the hydraulic oil in the pump body shell is pushed into the pump cavity under the action of rotation of the rotor blades to increase pressure and is discharged; at the moment, through a first filter plate and a second filter plate in the treatment mechanism, the discharged hydraulic oil can be conveniently filtered, metal particles and other pollutants generated by abrasion during rotation of a rotor, a stator and blades in the steering pump are prevented from damaging parts in a hydraulic system as much as possible, and protection on the parts of the hydraulic system is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of power steering pumps, and specifically relates to a steering pump core. Background Art

[0002] The steering pump core is one of the key parts in the steering system. It is usually composed of a stator, a rotor and blades. The main function of the steering pump core is to convert hydraulic oil into hydraulic energy to provide the required pressure and flow for the steering system. The working process of the steering pump core is a continuous cycle process. By continuously converting hydraulic oil into hydraulic energy, it provides stable pressure and flow for the steering system. This hydraulic energy converts the rotational force into the required steering force through other components in the hydraulic system, such as hydraulic cylinders or hydraulic valves, to realize the operation of the steering system.

[0003] For example, a utility model patent with announcement number CN213331508U discloses a power steering pump core, including a stator body and an oil storage cavity, wherein the middle part of the stator body is provided with a rotor cavity and a weight reduction hole from the inside to the outside, and the rotor body is installed on the inner side of the rotor cavity, the outer end of the rotor body is plugged with blades, and the inner side of the rotor body is provided with an axial hole, the upper end of the stator body is provided with an oil injection hole and a threaded hole from the inside to the outside, and a rubber sleeve is provided on the inner side of the threaded hole, a rubber plug is installed on the inner side of the oil injection hole, the oil storage cavity is located inside the stator body, and a sound insulation coating is provided on the outer side of the stator body, and a fixing cylinder is installed on the inner side of the oil storage cavity. Compared with the existing ordinary power steering pump core, the sound insulation coating of the power steering pump core plays a role of sound absorption and sound insulation by reducing the transmitted sound wave energy, and the rubber sleeve is provided to play a role of buffering and shock absorption, thereby avoiding the loosening of bolts due to vibration, facilitating the lubrication of the rotor body, and saving the use of lubricating oil.

[0004] The device is convenient for lubricating the rotor body by arranging an oil storage chamber, a fixed cylinder, a movable rod, an oil delivery channel, a sealing sleeve, a rubber plug and an oil filling hole. Generally, during the operation of the steering pump, the rotor and the stator are lubricated and cooled by the hydraulic oil circulating internally, and it is usually unnecessary to add lubricating oil externally. However, a certain amount of wear will occur when the pump core (rotor, blades) rotates. After wear, metal particles and other contaminants will be brought into the hydraulic oil. These contaminants may damage other components in the hydraulic system when discharged and reduce the overall performance and life of the system. For this purpose, a steering pump core is provided. Utility Model Content

[0005] The purpose of the present application is to provide a steering pump core in order to solve the above-mentioned problems.

[0006] The technical solution adopted in the present application is as follows: a steering pump core, including a pump body shell, an oil inlet pipe is fixedly installed on the outer surface of the pump body shell, an oil inlet end is fixedly installed on the front end of the oil inlet pipe, an oil drain pipe is fixedly installed on the outer surface of the pump body shell near the side of the oil inlet pipe, a sealing end cover is provided on the top of the oil drain pipe, an internal threaded hole is opened on the top of the oil drain pipe, an external threaded mounting ring corresponding to the internal threaded hole is fixedly installed on the bottom surface of the sealing end cover, the external threaded mounting ring is threadedly connected to the inside of the internal threaded hole, and a processing mechanism is provided inside the oil drain pipe.

[0007] In a preferred embodiment, the processing mechanism includes a limit ring 1, a filter plate 1, a connecting rod and a filter plate 2. The limit ring 1 is fixedly installed on the inner wall surface of the oil drain pipe near the top, and the filter plate 1 is arranged inside the oil drain pipe above the limit ring 1. Four connecting rods are installed on the top surface of the filter plate 1 in a circular array, and the filter plate 2 is fixedly installed on one end of the four connecting rods away from the filter plate 1.

[0008] In a preferred embodiment, a mounting shell is fixedly mounted on the front of the pump body shell, and a pulley is provided at the front end of the mounting shell.

[0009] In a preferred embodiment, a second limiting ring is fixedly mounted on the inner wall surface of the external thread mounting ring.

[0010] In a preferred embodiment, the bottom end of the oil drain pipe is threadedly connected to a pressure limiting valve.

[0011] In a preferred embodiment, the mesh apertures on the filter plate 1 and the filter plate 2 are different in size. In summary, due to the adoption of the above technical solution, the beneficial effects of the present application are:

[0012] 1. In the present application, due to the adoption of the above-mentioned scheme, when the engine is started, the pulley is driven to rotate, and the pulley drives the rotating shaft and the rotor to move. At this time, the hydraulic oil inside the hydraulic oil tank enters the interior of the pump body shell through the oil inlet end and the oil inlet pipe. When the hydraulic oil enters the interior of the pump body shell, it will be pushed into the pump chamber under the action of the rotation of the rotor blades to increase the pressure. After the pressurization, the hydraulic oil is discharged through the inside of the oil drain pipe and the oil drain hole on the top of the sealing end cover. When the hydraulic oil in the oil drain pipe is discharged, the filter plates 1 and 2 in the processing mechanism are set at this time, so as to facilitate the filtering of the discharged hydraulic oil, and try to avoid the metal particles and other pollutants generated by the wear of the rotor, stator and blades inside the steering pump during the rotation to damage the components in the hydraulic system, thereby improving the protection of the hydraulic system components. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of this application;

[0014] Figure 2 This is a schematic diagram of the internal structure of the pump housing of this application;

[0015] Figure 3 This is a partial structural explosion diagram of the present application.

[0016] Markings in the figure: 1. Pump body shell; 2. Oil inlet pipe; 3. Oil inlet end; 4. Oil discharge pipe; 5. Sealing end cover; 6. Internal thread hole; 7. External thread mounting ring; 8. Processing mechanism; 9. Limiting ring 1; 10. Filter plate 1; 11. Connecting rod; 12. Filter plate 2; 13. Mounting shell; 14. Pulley; 15. Limiting ring 2; 16. Pressure limiting valve. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0018] refer to Figure 1 , Figure 2 and Figure 3 A steering pump core comprises a pump body shell 1, a mounting shell 13 is fixedly mounted on the front of the pump body shell 1, and a pulley 14 is arranged at the front end of the mounting shell 13; a stator is installed inside the pump body shell 1, a rotor and blades are arranged inside the stator, a bearing and a rotating shaft are installed inside the mounting shell 13, one end of the rotating shaft is fixed to the pulley 14, and the other end is connected to the rotor, the pulley 14 is connected to the engine crankshaft through a transmission belt, so as to transmit the rotational power of the engine to the steering pump, and the steering pump can generate the required pressure and flow, provide hydraulic energy for the steering system, and realize the steering function.

[0019] refer to Figure 1 , Figure 2 An oil inlet pipe 2 is fixedly installed on the outer surface of the pump body shell 1, and an oil inlet terminal 3 is fixedly installed at the front end of the oil inlet pipe 2; the oil inlet terminal 3 is connected to the external hydraulic oil tank, so that the hydraulic oil inside the external hydraulic oil tank enters the interior of the pump body shell 1 through the oil inlet pipe 2.

[0020] refer to Figure 1 , Figure 2 and Figure 3An oil drain pipe 4 is fixedly installed on the outer surface of the pump body shell 1 near the side of the oil inlet pipe 2, the bottom end of the oil drain pipe 4 is threadedly connected to the pressure limiting valve 16, and a sealing end cover 5 is arranged on the top of the oil drain pipe 4; the internal hydraulic oil entering the pump body shell 1 is pushed into the pump chamber to increase the pressure under the action of the rotation of the rotor blades. After the pressure is increased, the hydraulic oil passes through the inside of the oil drain pipe 4 and the sealing end cover 5 is arranged, which is convenient for sealing the oil drain pipe 4. An oil drain hole is opened on the top of the sealing end cover 5, and the oil drain hole is connected to the oil pipe, so that the discharged hydraulic pressure can provide the required power for the steering system. Through the pressure limiting valve 16, it is convenient to limit the maximum working pressure of the steering system to prevent the system from overpressure and damage.

[0021] refer to Figure 1 , Figure 3 An internal threaded hole 6 is provided at the top of the oil drain pipe 4, and an external threaded mounting ring 7 corresponding to the internal threaded hole 6 is fixedly installed on the bottom surface of the sealing end cover 5. The external threaded mounting ring 7 is threadedly connected to the inside of the internal threaded hole 6, and a processing mechanism 8 is provided inside the oil drain pipe 4; by threading the external threaded mounting ring 7 to the inside of the internal threaded hole 6, the sealing end cover 5 is installed and fixed.

[0022] refer to Figure 1 , Figure 3 The processing mechanism 8 includes a limit ring 19, a filter plate 10, a connecting rod 11 and a filter plate 2 12. The limit ring 19 is fixedly installed on the inner wall surface near the top of the oil discharge pipe 4, and the limit ring 2 15 is fixedly installed on the inner wall surface of the external thread mounting ring 7. The filter plate 10 is arranged above the limit ring 19 in the interior of the oil discharge pipe 4. Four connecting rods 11 are installed on the top surface of the filter plate 10 in a circular array, and the ends of the four connecting rods 11 away from the filter plate 10 are fixedly installed with the filter plate 2 12. The mesh apertures of the filter plate 10 and the filter plate 2 12 are different in size; by setting the limit ring 19 and the limit ring 2 15, it is convenient to limit the installation of the filter plate 10, the connecting rod 11 and the filter plate 2 12, so that they can be stably installed in the interior of the oil discharge pipe 4. By setting the filter plate 10 and the filter plate 2 12, it is convenient to filter the discharged hydraulic oil, and try to avoid the metal particles and other pollutants generated by the internal wear of the steering pump from affecting the components in the hydraulic system.

[0023] The implementation principle of a steering pump core embodiment of the present application is as follows: the user first connects the pulley 14 to the engine crankshaft through a belt, and when the engine starts, the pulley 14 is driven to rotate, and the pulley 14 drives the rotating shaft and the rotor to move. At this time, the hydraulic oil inside the hydraulic oil tank enters the interior of the pump body shell 1 through the oil inlet end 3 and the oil inlet pipe 2. When the hydraulic oil enters the interior of the pump body shell 1, it will be pushed into the pump chamber under the action of the rotation of the rotor blades to increase the pressure. After the pressurization, the hydraulic oil is discharged through the inside of the oil discharge pipe 4 and the oil discharge hole on the top of the sealing end cover 5. When the hydraulic oil in the oil discharge pipe 4 is discharged, the filter plate 1 10 and the filter plate 2 12 in the processing mechanism 8 are set at this time, so as to facilitate the filtering of the discharged hydraulic oil, and try to avoid the metal particles and other pollutants generated by the wear of the rotor, stator and blades inside the steering pump during the rotation to damage the components in the hydraulic system, thereby improving the protection of the hydraulic system components.

[0024] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A steering pump core, comprising a pump housing (1), characterized in that: An oil inlet pipe (2) is fixedly mounted on the outer surface of the pump body shell (1), an oil inlet end (3) is fixedly mounted at the front end of the oil inlet pipe (2), an oil discharge pipe (4) is fixedly mounted on the outer surface of the pump body shell (1) near the side of the oil inlet pipe (2), a sealing end cover (5) is arranged at the top end of the oil discharge pipe (4), an internal threaded hole (6) is opened at the top end of the oil discharge pipe (4), an external threaded mounting ring (7) corresponding to the internal threaded hole (6) is fixedly mounted on the bottom surface of the sealing end cover (5), the external threaded mounting ring (7) is threadedly connected to the inside of the internal threaded hole (6), and a processing mechanism (8) is arranged inside the oil discharge pipe (4).

2. A steering pump core as claimed in claim 1, characterized in that: The processing mechanism (8) comprises a limiting ring (9), a filter plate (10), a connecting rod (11) and a filter plate (12); the limiting ring (9) is fixedly mounted on the inner wall surface close to the top of the oil discharge pipe (4); the filter plate (10) is arranged inside the oil discharge pipe (4) above the limiting ring (9); four connecting rods (11) are mounted on the top surface of the filter plate (10) in a circular array, and the filter plate (12) is fixedly mounted on the ends of the four connecting rods (11) away from the filter plate (10).

3. A steering pump core as claimed in claim 1, characterized in that: A mounting shell (13) is fixedly mounted on the front of the pump housing (1), and a pulley (14) is disposed at the front end of the mounting shell (13).

4. A steering pump core as claimed in claim 1, characterized in that: A second limiting ring (15) is fixedly mounted on the inner wall surface of the external thread mounting ring (7).

5. A steering pump core as claimed in claim 1, characterized in that: The bottom end of the oil discharge pipe (4) is threadedly connected to a pressure limiting valve (16).

6. A steering pump core as claimed in claim 2, characterized in that: The mesh apertures on the filter plate 1 (10) and the filter plate 2 (12) are different in size.

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