Suspended oil distribution disc structure of steering pump

Abstract

The suspension oil distribution disc structure of the steering pump comprises a pump body, a pump shaft, a stator, a rotor, an oil distribution disc and a pump cover, the stator is installed in the pump cover, the oil distribution disc is installed at the left side end in the pump body, the pump shaft is rotationally connected to the pump body, the rotor is fixed to the pump shaft, and the pump cover is installed and fixed to the right end side of the pump body. An inner sealing groove and an outer sealing groove are distributed in the left side end of the oil distribution disc along the inner ring and the outer ring respectively, an inner sealing ring and an outer sealing ring are arranged in the inner sealing groove and the outer sealing groove respectively, an inner sealing check ring capable of moving inside and outside the inner sealing groove is further arranged in the inner sealing groove of the oil distribution disc, and the inner sealing check ring is located on the outer side of the inner sealing ring. An outer sealing ring check ring capable of moving inside and outside the outer sealing groove is further arranged in the outer sealing groove of the oil distribution disc, and the outer sealing ring check ring is located on the outer side of the outer sealing ring. The sealing device has the advantages that the structure is simple, the sealing requirement under high and low pressure can be effectively met, the processing requirement is not high, and meanwhile, the problem of inward sucking displacement movement of the O-shaped ring under high pressure is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to new energy automobile technical field, concretely relates to a kind of suspension oil distribution plate structure of steering pump. BACKGROUND

[0002] The conventional oil distribution plate currently adopted is usually placed with O-ring under the oil distribution plate to form linear seal, or directly rely on the spring at the rear end to be on the pump body to form pseudo-face seal with the end face of the pump body. The O-ring seal is a common treatment method, but this method is usually used in low-pressure steering pump, such as passenger car steering pump, and the pressure is less than or equal to 10 MPa. When the pressure is greater than 10 MPa, the oil distribution plate is subjected to high-pressure oil in the oil outlet cavity, and there is an upward floating and closing phenomenon. At this time, the O-ring changes from static seal to dynamic seal. During the continuous discharge of oil, there is a vacuum in the inner cavity, which causes the O-ring to suck inward. When the O-ring deviates from the original position, the sealing rate decreases, and the sealing is poor after a long time, which causes the oil pump to fail.

[0003] The conventional hard contact surface seal is the contact between the pump body plane and the end face of the oil distribution plate, without other medium in between. This scheme is applicable to working conditions above 10 MPa, but the sealing structure requires high flatness of the oil distribution plate and the bottom surface of the pump body. After high-temperature durability and thermal deformation, the flatness will be damaged. At this time, the sealing surface of the face seal is damaged, resulting in failure. SUMMARY

[0004] The technical problem to be solved by the utility model is to provide a kind of suspension oil distribution plate structure of steering pump, which is simple in structure, can effectively meet the sealing requirements under high and low pressure, has low processing requirements, and solves the inward suction displacement movement of O-ring under high pressure.

[0005] To solve the above problems, the utility model adopts the following technical scheme:

[0006] A kind of suspension oil distribution plate structure of steering pump, including pump body, pump shaft, stator, rotor, oil distribution plate and pump cover, the stator is installed in pump cover, the oil distribution plate is installed in the left side end in pump body, the pump shaft is rotatably connected on pump body, the rotor is fixed on pump shaft, the pump cover is installed and fixed on the right end side of pump body, the inner seal groove and outer seal groove are respectively distributed on the inner ring and outer ring on the left side end of the oil distribution plate, the inner seal groove and outer seal groove are respectively built-in inner seal ring and outer seal ring, the inner seal groove of the oil distribution plate is further provided with inner seal baffle that can move in and out of the inner seal groove, the inner seal baffle is located on the outer side of inner seal ring, the outer seal groove of the oil distribution plate is further provided with outer seal ring baffle that can move in and out of the outer seal groove, and the outer seal ring baffle is located on the outer side of outer seal ring.

[0007] Further technical solutions are that the outer sealing ring stop ring and the inner sealing ring stop ring are 0.15mm higher than the left end surface of the oil distribution plate at the outer sealing groove and the inner sealing groove.

[0008] Further technical solutions are that the outer sealing ring stop ring and the inner sealing ring stop ring are both "L" type structures, which can block the inner sealing ring and the outer sealing ring in the outer sealing ring stop ring and the inner sealing ring stop ring to prevent displacement.

[0009] Further technical solutions are that the pump body is further provided with a bearing, and the pump shaft is arranged in the bearing, so that the pump shaft can rotate in the pump body.

[0010] Further technical solutions are that the pump body and the pump cover are further provided with an O-shaped sealing ring for sealing when the pump body and the pump cover are fixed by bolts.

[0011] Further technical solutions are that the outer sealing ring stop ring and the inner sealing ring stop ring are both made of polytetrafluoroethylene material, which has good properties.

[0012] Further technical solutions are that the inner sealing ring and the outer sealing ring are both made of hydrogenated nitrile rubber material.

[0013] The beneficial effects of the utility model are:

[0014] The utility model discloses a suspension oil distribution plate structure of a steering pump replaces the original oil circuit system, adopts the utility model design, and the oil distribution plate and the pump body plane form surface sealing at low pressure, and the oil distribution plate and the pump body plane form line sealing at high pressure, can effectively satisfy the sealing demand at high and low pressure, and the processing requirement is not high, and the inward suction displacement movement problem of the sealing ring at high pressure is solved. DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will briefly introduce the drawing needed in the embodiment or prior art description, and obviously, the drawing in the following description is only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0016] Figure 1 It is a perspective view of the suspension oil distribution plate structure of the utility model of a steering pump;

[0017] Figure 2 It is an explosion view of the suspension oil distribution plate structure of the utility model of a steering pump;

[0018] Figure 3 It is a schematic view of the oil distribution plate in the suspension oil distribution plate structure of the utility model of a steering pump;

[0019] Figure 4 It is the schematic view of the outer sealing ring stop ring in the suspension oil distribution plate structure of the steering pump of the utility model;

[0020] Figure 5 It is the schematic view of the inner sealing ring stop ring in the suspension oil distribution plate structure of the steering pump of the utility model;

[0021] Figure 6 It is the schematic view of the sealing ring stop ring and the inner sealing stop ring and the inner sealing ring and the outer sealing ring respectively in the inner sealing groove and the outer sealing groove in the suspension oil distribution plate structure of the steering pump of the utility model.

[0022] Figures 1-6 Middle: 1-pump shaft, 2-bearing, 3-pump body, 4-inner sealing stop ring, 5-inner sealing ring, 6-outer sealing ring stop ring, 7-outer sealing ring, 8-oil distribution plate, 9-pump cover, 10-rotor, 11-stator, 12-O-shaped sealing ring, 13-inner sealing groove, 14-outer sealing groove. DETAILED DESCRIPTION

[0023] The preferred embodiments of the utility model are described in detail below, so that the advantages and characteristics of the utility model can be more easily understood by those skilled in the art, and the protection scope of the utility model can be more clearly and explicitly defined.

[0024] Referring to Figures 1 to 6 As shown in the figure, a suspension oil distribution plate structure of a steering pump, comprising a pump body 3, a pump shaft 1, a stator 11, a rotor 10, an oil distribution plate 8 and a pump cover 9, the stator 11 is installed in the pump cover 9, the oil distribution plate 8 is installed in the left end of the pump body 3, the pump shaft 1 is rotatably connected to the pump body 3, the rotor 10 is fixed to the pump shaft 1, the pump cover 9 is fixedly installed on the right end of the pump body 3, the inner and outer rings of the left end of the oil distribution plate 8 are respectively distributed with an inner sealing groove 13 and an outer sealing groove 14, the inner sealing groove 13 and the outer sealing groove 14 are respectively provided with an inner sealing ring 5 and an outer sealing ring 7, the inner sealing groove 13 of the oil distribution plate 8 is further provided with an inner sealing stop ring 4 which can move in and out of the inner sealing groove 13, the inner sealing stop ring 4 is located outside the inner sealing ring 5, the outer sealing groove 14 of the oil distribution plate 8 is further provided with an outer sealing ring stop ring 6 which can move in and out of the outer sealing groove 14, the outer sealing ring stop ring 6 is located outside the outer sealing ring 7.

[0025] The outer sealing ring stop ring 6 and the inner sealing ring stop ring 4 are located at the outer sealing groove 14 and the inner sealing groove 13 and are 0.15 mm higher than the left end surface of the oil distribution disc 8. The outer sealing ring stop ring 6 and the inner sealing ring stop ring 4 are both of "L" type structure, and the inner sealing ring 5 and the outer sealing ring 7 can be stopped in the outer sealing ring stop ring 6 and the inner sealing ring stop ring 4 to prevent displacement. The bearing 2 is also installed on the pump body 3, and the pump shaft 1 is built in the bearing 2 to realize rotation of the pump shaft 1 in the pump body 3. The O-shaped sealing ring 12 is also placed between the pump body 3 and the pump cover 9 to seal when the pump body 3 and the pump cover 9 are fixed by bolts. The outer sealing ring stop ring 6 and the inner sealing ring stop ring 4 are both made of polytetrafluoroethylene material and have good properties. The inner sealing ring 5 and the outer sealing ring 7 are both made of hydrogenated butadiene-acrylonitrile rubber material.

[0026] In the embodiment, when the pressure is low, the oil distribution disc 8 is tightly attached to the left end surface in the pump body 3 under the locking force of the pump cover 9, and the inner sealing ring 5 and the outer sealing ring 7 are extruded and accumulated on the inner side of the outer sealing ring stop ring 6 and the inner sealing ring stop ring 4 in the inner sealing groove 13 and the outer sealing groove 14, and the outer sealing ring stop ring 6 and the inner sealing ring stop ring 4 form a precise surface contact with the left end surface in the pump body 3.

[0027] When the pressure is high, the oil distribution disc 8 is floated by oil pressure, and the inner sealing ring 5 and the outer sealing ring 7 are expanded and stopped in the stop ring by the outer sealing ring stop ring 6 and the inner sealing ring stop ring 4, and at this time, the outer sealing ring stop ring 6 and the inner sealing ring stop ring 4 form a line-surface contact with the left end surface in the pump body 3 and are still in the effective sealing stage.

[0028] The groove depth of the outer sealing groove 14 and the inner sealing groove 13 is 1.97-2.07 mm, and the thickness of the outer sealing ring stop ring 6 and the inner sealing ring stop ring 4 is 2-2.2 mm, so the thickness of the outer sealing ring stop ring 6 and the inner sealing ring stop ring 4 is 0.15 mm higher than the maximum distance between the outer side end surfaces of the outer sealing groove 14 and the inner sealing groove 13.

[0029] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this, and any change or replacement without creative labor should be covered in the protection scope of the present application.

Claims

1. A kind of suspension oil distribution plate structure of steering pump, including pump body, pump shaft, stator, rotor, oil distribution plate and pump cover, the stator is installed in pump cover, the oil distribution plate is installed in the left end in pump body, the pump shaft is rotatably connected on pump body, the rotor is fixed on pump shaft, the pump cover is installed and fixed in the right end side of pump body, it is characterized by: The inner sealing groove and the outer sealing groove are respectively arranged on the inner ring and the outer ring of the left end of the oil distribution disc, and the inner sealing ring and the outer sealing ring are respectively arranged in the inner sealing groove and the outer sealing groove.

2. The floating oil distribution disc structure of a steering pump according to claim 1, characterized in that: The cross sections of the outer sealing ring stopper and the inner sealing ring stopper are both "L" type structures.

3. The floating oil distribution disc structure of a steering pump according to claim 1, characterized in that: An O-shaped sealing ring is arranged between the pump body and the pump cover.

4. The floating oil distribution disc structure of a steering pump according to claim 1, characterized in that: The outer sealing ring stopper and the inner sealing ring stopper are both made of polytetrafluoroethylene.

5. The floating oil distribution disc structure of a steering pump according to claim 1, characterized in that: The inner sealing ring and the outer sealing ring are both made of hydrogenated nitrile rubber.

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