Rotor with novel balance groove structure

Abstract

The utility model discloses a rotor with a novel balance groove structure, and belongs to the technical field of oil pump rotors. Comprising a rotor body, a shaft hole is formed in the center of the rotor body, a plurality of blade grooves formed in the radial direction are formed in the peripheral face of the rotor body, each blade groove is provided with two opposite end faces, and balance grooves penetrating through the rotor body are formed in the two end faces of each blade groove respectively. The technical scheme has the beneficial effects that the balancing grooves can provide a layer of oil film between the rotor and the blades in the high-speed rotation process of the rotor, so that the blades slide stably, the friction and impact are reduced, the noise is reduced, and the stability of the product performance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil pump rotors, in particular to a rotor with a novel balance groove structure. Background Art

[0002] The vane type steering oil pump is a common type of booster pump. Its design feature is that several vanes are installed on the rotor. These vanes form sealed cavities with the inner wall of the pump body during rotation. Through the swing of the vanes and the rotation of the rotor, a certain hydraulic pressure is generated, thereby pushing the liquid in the steering system to flow, and then realizing the assistance to the steering wheel.

[0003] In the prior art, when the power steering oil pump is working, the internal rotor rotates at a high speed. Under the condition of high-speed rotation, sliding friction, pulsating impact and noise will occur between the vane and the rotor, thus affecting the performance of the product. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a rotor with a novel balance groove structure to solve the above technical problems;

[0005] A rotor with a novel balance groove structure includes

[0006] A rotor main body, a shaft hole is opened at the center of the rotor main body, and several blade grooves are arranged on the outer peripheral surface of the rotor main body along the radial direction. The blade grooves have two opposite end faces, and balance grooves penetrating the rotor main body are respectively opened on the two end faces of the blade grooves.

[0007] Preferably, the depth of the balance groove is 0.3 mm to 0.7 mm, and the width of the balance groove is 0.8 mm to 1.2 mm.

[0008] Preferably, several of the blade grooves are evenly distributed along the circumferential direction of the rotor main body.

[0009] Preferably, the shaft hole is coaxial with the rotor main body, and the shaft hole penetrates the rotor main body.

[0010] Preferably, a fixed spline matching with the pump shaft spline is arranged in the shaft hole, and the fixed spline is arranged on the inner wall of the shaft hole.

[0011] Preferably, a guiding part matching with the outer diameter of the pump shaft is further arranged in the shaft hole, and the guiding part is close to the fixed spline.

[0012] Preferably, a pressure relief groove is opened at one end of the blade groove close to the shaft hole.

[0013] Preferably, the shape of the balance groove is rectangular.

[0014] The beneficial effects of the present utility model are as follows: The balance groove can provide an oil film between the rotor and the blades during the high-speed rotation of the rotor, enabling the blades to slide smoothly, reducing friction and impact, lowering noise, and improving the stability of the product performance. Description of the Drawings

[0015] Figure 1 is a top view of the rotor with a novel balance groove structure of the present utility model;

[0016] Figure 2 is Figure 1 a cross-sectional view taken along line A-A.

[0017] In the drawings: 1, rotor body; 2, shaft hole; 3, blade groove; 4, balance groove; 5, pressure relief groove; 6, fixed spline; 7, guiding portion. Detailed Embodiments

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the protection scope of the present utility model.

[0019] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0020] Next, the present utility model will be further described in conjunction with the drawings and specific embodiments, but it is not a limitation of the present utility model.

[0021] A rotor with a novel balance groove structure, as Figure 1 , Figure 2 shown, includes

[0022] a rotor body 1, a shaft hole 2 is provided at the center of the rotor body 1, and a plurality of blade grooves 3 are provided on the outer peripheral surface of the rotor body 1 and are radially opened. The blade grooves 3 have two opposite end faces, and balance grooves 4 penetrating the rotor body 1 are respectively provided on the two end faces of the blade grooves 3.

[0023] Specifically, the present utility model provides a rotor with a novel balance groove structure. The balance groove 4 provides a channel between the high-speed rotating rotor and the blades. When the rotor rotates, the oil will be brought into the balance groove 4, playing a lubricating role, reducing the direct metal contact between the two, enabling the blades to slide smoothly, reducing friction and impact, lowering noise, and preventing the friction of the pump from burning when the rotor rotates at high speed.

[0024] In a preferred embodiment, the depth of the balance groove 4 is 0.3 mm to 0.7 mm, and the width of the balance groove 4 is 0.8 mm to 1.2 mm;

[0025] The vane groove 3 is provided with vanes. When the rotor body 1 rotates, there is an oil film between the vanes in the vane groove 3 and the balance groove 4.

[0026] Specifically, the depth of the balance groove 4 is 0.5 mm, and the width of the balance groove 4 is 1 mm. The depth is sufficient to accommodate a certain amount of lubricating oil, so that a sufficiently thick oil film can be formed during high-speed rotation, thereby effectively reducing friction. If the depth is too small, the oil film may not be sufficient to cover the contact surface, resulting in poor lubrication effect. If the depth is too large, it may increase unnecessary space and affect the hydrodynamic performance.

[0027] The width of the balance groove 4 affects the fluidity and distribution of the oil, ensuring that the oil can evenly flow into and cover the contact area between the rotor and the vane. A moderate width can avoid too fast oil loss and at the same time avoid causing unnecessary structural complexity.

[0028] In a preferred embodiment, a plurality of vane grooves 3 are evenly distributed along the circumferential direction of the rotor body 1.

[0029] Specifically, the evenly distributed vane grooves 3 can ensure that the airflow is evenly distributed on the rotor surface, reducing the concentration or unevenness of local airflow. Reducing vibration and noise caused by uneven airflow helps to improve the stability and comfort of the equipment, especially more obvious in high-speed applications.

[0030] The evenly arranged vane grooves 4 can optimize the interaction between the airflow and the rotor, reduce energy loss, and thus improve the mechanical efficiency. For example, in a wind turbine, this layout can improve the efficiency of converting wind energy into mechanical energy.

[0031] The evenly distributed vane grooves 4 help to disperse heat and reduce local overheating. Improving the dynamic balance of the rotor, reducing the centrifugal force caused by imbalance, thereby extending the service life of the equipment and reducing maintenance requirements.

[0032] In a preferred embodiment, the shaft hole 2 is coaxial with the rotor body 1, and the shaft hole 2 penetrates the rotor body 1;

[0033] The shaft hole 2 is provided with a fixed spline 6 that mates with the pump shaft spline, and the fixed spline 6 is provided on the inner wall of the shaft hole 2;

[0034] The shaft hole 2 is also provided with a guiding portion 7 that mates with the outer diameter of the pump shaft, and the guiding portion 7 is close to the fixed spline 6.

[0035] Specifically, the fixed spline 6 inside the shaft hole 2 cooperates with the pump shaft spline to play a fixing role, and the guiding part 7 cooperates with the outer periphery of the pump shaft to play an assembly guiding and fixing role, ensuring the stability and rotational accuracy of the rotor, and reducing axial displacement or deviation.

[0036] The guiding part 7 cooperates with the outer periphery of the pump shaft to ensure accurate docking during the assembly process. The guiding part 7 can help align the rotor body 1 with the pump shaft, reducing errors during the assembly process, and improving the assembly accuracy and consistency.

[0037] The combined design of the fixed spline 6 and the guiding part 7 reduces friction and wear caused by improper assembly or axial displacement, thereby reducing the risk of equipment failure and improving the operating reliability and lifespan of the rotor.

[0038] In a preferred embodiment, a pressure relief groove 5 is provided at one end of the blade groove 3 close to the shaft hole 2.

[0039] Specifically, the pressure relief groove 5 is located at the bottom of the blade groove 3, which plays a role in relieving pressure between the blade and the rotor during the operation of the product, avoiding the problem of blockage of the blade groove 3, and enabling the equipment to operate continuously and stably.

[0040] In a preferred embodiment, the shape of the balance groove 4 is rectangular.

[0041] Specifically, the design of the rectangular balance groove 4 helps to balance the centrifugal force of the rotor during rotation, enabling the rotor to maintain better balance during high-speed rotation, and reducing vibration and impact caused by imbalance. Reducing local stress concentration, thereby avoiding material fatigue or deformation caused by uneven pressure.

[0042] Through the design of the balance groove 4, the vibration and noise during the operation of the rotor can be reduced. The balance groove 4 helps to alleviate the vibration problem caused by imbalance, thereby enhancing the operating stability and comfort of the equipment.

[0043] The shape of the balance groove 4 is relatively simple and runs through the rotor body 1, which is easy to manufacture and process, reducing the processing difficulty and cost, and simplifying the assembly process.

[0044] In summary, the present application provides a rotor with a novel balance groove structure for balancing the rotor and the blade under high-speed rotation conditions. A through balance groove 4 is provided on each of the two flat surfaces on both sides of the rotor blade groove 3. This balance groove 4 can provide an oil film between the rotor and the blade during the high-speed rotation of the rotor, enabling the blade to slide smoothly, reducing friction and impact, reducing noise, and improving the stability of the product performance.

[0045] The above are only the preferred embodiments of the present utility model, and do not thus limit the implementation manners and protection scope of the present utility model. For those skilled in the art, it should be realized that all the solutions obtained by equivalent replacements and obvious changes made by using the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rotor with a novel balancing slot structure, characterized in that: include, A rotor body (1), wherein an axial hole (2) is provided at the center of the rotor body (1), and a plurality of radially-opened blade grooves (3) are provided on the outer peripheral surface of the rotor body (1), wherein the blade groove (3) has two opposite end faces, and balance grooves (4) penetrating the rotor body (1) are respectively provided on the two end faces of the blade groove (3).

2. The rotor with a novel balancing groove structure according to claim 1 is characterized in that: The depth of the balancing groove (4) is 0.3 mm to 0.7 mm, and the width of the balancing groove (4) is 0.8 mm to 1.2 mm.

3. The rotor with a novel balancing groove structure according to claim 1 is characterized in that: The plurality of blade slots (3) are evenly distributed along the circumferential direction of the rotor body (1).

4. The rotor with a novel balancing slot structure according to claim 1 is characterized in that: The axial hole (2) is coaxial with the rotor body (1), and the axial hole (2) passes through the rotor body (1).

5. The rotor with a novel balancing groove structure according to claim 1 is characterized in that: A fixed spline (6) matching with the pump shaft spline is arranged in the shaft hole (2); the fixed spline (6) is arranged on the inner wall of the shaft hole (2).

6. The rotor with a novel balancing slot structure according to claim 5, characterized in that: A guide portion (7) that cooperates with the outer support of the pump shaft is also provided in the shaft hole (2), and the guide portion (7) is close to the fixed spline (6).

7. The rotor with a novel balancing slot structure according to claim 1 is characterized in that: A pressure relief groove (5) is provided at one end of the blade groove (3) close to the shaft hole (2).

8. The rotor with a novel balancing slot structure according to claim 1, characterized in that: The balancing groove (4) is in the shape of a rectangle.

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