A high-speed air compressor for hydrogen fuel cell vehicles

Abstract

The utility model discloses a high -speed air compressor for hydrogen fuel cell car, its dynamic balance counterweight structure includes the multiple balance holes of array on rotor, the cover, the adjusting lever and the counterweight block connected with adjusting lever, and the outer periphery of counterweight block is equipped with antiskid layer, and the outer end of adjusting lever still is equipped with handle part, in the utility model, the cover is set to balance hole outer end, and the adjusting lever is screwed on the cover, and the depth of counterweight block in balance hole is adjusted through the mode of rotating adjusting lever, on one hand can effectively avoid dust and other impurities to enter balance hole, on the other hand only need to process the thread on the cover and adjusting lever, and compared with processing the thread in balance hole and counterweight block is more simple, finally, the rotor can be directly carried out dynamic balance adjustment through rotating adjusting lever, and it is also more convenient to adjust compared with prior art, and through the length of adjusting lever outside the cover observation, the depth of each counterweight block in balance hole is also more easily compared, and it is favorable to the data statistics of later period.

Description

Technical Field

[0001] This utility model relates to a high-speed air compressor for hydrogen fuel cell vehicles. Background Technology

[0002] Patent CN221990862U discloses a dynamic balancing counterweight structure for a high-speed air compressor rotor used in hydrogen fuel cell vehicles. The structure includes a rotor body with multiple symmetrically arranged inclined surfaces at both ends for counterweighting or weight reduction. Multiple counterweights are detachably mounted on these inclined surfaces. The counterweights are balancing bolts that slide towards or away from the rotor's rotation center on the inclined surfaces. By screwing the counterweights forward or backward, the radial projection distance between the center of mass of the balancing bolt and the rotor's rotation center decreases or increases, thereby changing the magnitude of the centrifugal force F during rotation and achieving the required dynamic balancing accuracy of the rotor.

[0003] However, the above-mentioned dynamic balancing counterweight structure for the rotor of the high-speed air compressor for hydrogen fuel cell vehicles has the following shortcomings: its balance hole is open, and as the high-speed air compressor for hydrogen fuel cell vehicles operates for a long time, impurities are easily accumulated in the balance hole, causing the rotor to become unbalanced again; the position of the balance bolt cannot be observed after adjustment, and measurement is inconvenient, which is not conducive to the collection and statistics of subsequent data; the thread machining accuracy requirements for the balance hole and the balance bolt are high, especially the internal thread machining of the balance hole is difficult. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a high-speed air compressor for hydrogen fuel cell vehicles, whose rotor dynamic balance counterweight structure has the advantages of being easy to operate, easy to process, easy to observe, and not easy for impurities to enter.

[0005] The technical solution of this utility model is: a high-speed air compressor for hydrogen fuel cell vehicles, including a dynamic balance counterweight structure disposed on the compressor rotor. The dynamic balance counterweight structure includes multiple balance holes arrayed on the rotor, a cover fixed to the outer end of each balance hole, an adjusting rod screwed to the cover, and a counterweight block slidably connected in the balance hole and connected to the adjusting rod. The counterweight has an anti-slip layer on its outer periphery; The outer surface of the cover is flush with the outer surface of the rotor, and the outer end of the cover has a truncated cone, through which the adjusting rod passes. The outer end of the adjusting rod is also provided with a handle.

[0006] Furthermore, the outer end of the balance hole has a corresponding concave hole for the cover, and the cover is fastened in the concave hole and welded to the rotor as a whole.

[0007] Furthermore, the adjusting rod has multiple sections of coating in different colors.

[0008] Furthermore, a groove is provided on one side of the adjusting rod along the axial direction of the adjusting rod, the groove passing through the thread on the adjusting rod, and each section of the coating is disposed in the groove.

[0009] Furthermore, the counterweight has chamfers at both the front and rear ends.

[0010] Furthermore, the outer periphery of the handle is arrayed with anti-slip textures.

[0011] Furthermore, the outer end of the handle also has a keyway.

[0012] Furthermore, the outer walls at both ends of the rotor are provided with inverted inclined surfaces, and each of the balance holes is evenly spaced on the inverted inclined surfaces around the circumference of the rotor.

[0013] The beneficial effects of this utility model are as follows: A cover is provided at the outer end of the balance hole, and the adjusting rod is screwed onto the cover. The depth of the counterweight in the balance hole is adjusted by rotating the adjusting rod. On the one hand, this can effectively prevent dust and other impurities from entering the balance hole and causing the rotor to become unbalanced again. On the other hand, it is simpler to process threads only on the cover and the adjusting rod than to process threads in the balance hole and on the counterweight, and it is also easier to ensure the processing accuracy of the threads. Finally, the rotor can be dynamically balanced directly by rotating the adjusting rod, which is more convenient than the existing technology. By observing the length of the adjusting rod outside the cover, it is easier to compare the depth of each counterweight in the balance hole, which is beneficial for subsequent data statistics. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 yes Figure 1 Enlarged view of part A in the middle.

[0015] In the diagram: 1. Rotor; 2. Balance hole; 3. Cover; 4. Adjusting rod; 5. Counterweight; 6. Cone; 7. Handle; 8. Groove; 9. Keyway; 10. Inclined surface. Detailed Implementation

[0016] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0017] Combination Figure 1 and Figure 2 As shown, a high-speed air compressor for a hydrogen fuel cell vehicle includes a dynamic balance counterweight structure disposed on the compressor rotor 1. The dynamic balance counterweight structure includes a plurality of balance holes 2 arrayed on the rotor 1, a cover 3 fixed to the outer end of each balance hole 2, an adjusting rod 4 screwed to the cover 3, and a counterweight block 5 slidably connected in the balance hole 2 and connected to the adjusting rod 4. The counterweight 5 has an anti-slip layer on its outer periphery, which, together with the adjusting rod 4 screwed onto the cover 3, can prevent the adjusting rod 4 from rotating under the action of centrifugal force when the rotor 1 rotates at high speed. That is, a large external force is required to rotate the adjusting rod 4 to adjust the position of the counterweight 5 in the balance hole 2. The outer surface of the cover 3 is flush with the outer surface of the rotor 1 to avoid the accumulation of impurities at the connection between the cover 3 and the rotor 1. The outer end of the cover 3 has a truncated cone 6. The adjusting rod 4 passes through the cover 3 through the truncated cone 6. The truncated cone 6 mainly serves to strengthen the connection between the cover 3 and the adjusting rod 4. The convex truncated cone 6 can further prevent dust and other impurities from entering the adjusting hole. The smooth surface of the truncated cone 6 is not prone to dust accumulation. The outer end of the adjusting rod 4 is also provided with a handle 7.

[0018] In the above structure, a cover 3 is provided at the outer end of the balance hole 2, and the adjusting rod 4 is screwed onto the cover 3. The depth of the counterweight 5 in the balance hole 2 is adjusted by rotating the adjusting rod 4. On the one hand, this can effectively prevent dust and other impurities from entering the balance hole 2 and causing the rotor 1 to become unbalanced again. On the other hand, it is simpler to process threads only on the cover 3 and the adjusting rod 4 than to process threads in the balance hole 2 and on the counterweight 5, and it is also easier to ensure the processing accuracy of the threads. Finally, the rotor 1 can be directly dynamically balanced by rotating the adjusting rod 4, which is more convenient than the existing technology. By observing the length of the adjusting rod 4 outside the cover 3, it is easier to compare the depth of each counterweight 5 in the balance hole 2, which is beneficial for subsequent data statistics.

[0019] Specifically, the outer end of the balance hole 2 has a corresponding recessed hole for the cover 3. The cover 3 is fastened in the recessed hole and welded to the rotor 1 to ensure the reliability of the connection between the cover 3 and the rotor 1.

[0020] In another embodiment, the adjusting rod 4 has multiple sections of coatings of different colors, each coating used to indicate the depth of the counterweight 5 within the balance hole 2.

[0021] In another embodiment, such as Figure 2 As shown, a groove 8 is provided on one side of the adjusting rod 4 along the axial direction of the adjusting rod 4. The groove 8 passes through the thread on the adjusting rod 4, and each section of the coating is set in the groove 8 to avoid the coating being worn away after multiple adjustments.

[0022] In another embodiment, such as Figure 2 As shown, the counterweight 5 has chamfers at both the front and rear ends to facilitate its initial insertion into the balance hole 2.

[0023] In another embodiment, such as Figure 2 As shown, the outer periphery of the handle 7 has anti-slip textures. When adjusting the position of the counterweight 5, it can be adjusted by rotating the adjusting rod 4 while holding the handle 7.

[0024] In another embodiment, such as Figure 2 As shown, the outer end of the handle 7 also has a keyway 9. When the resistance is too great and the adjusting rod 4 cannot be turned by hand, the adjusting rod 4 can also be turned by a screwdriver or other tools.

[0025] In another embodiment, such as Figure 1 As shown, the rotor 1 has incised surfaces 10 on both ends of its outer wall, and the balance holes 2 are evenly spaced on the incised surfaces 10 around the circumference of the rotor 1.

Claims

1. A high-speed air compressor for a hydrogen fuel cell vehicle, comprising a dynamically balanced counterweight structure disposed on the compressor rotor (1), characterized in that, The dynamic balance counterweight structure includes multiple balance holes (2) arrayed on the rotor (1), a cover (3) fixed to the outer end of each balance hole (2), an adjusting rod (4) screwed onto the cover (3), and a counterweight block (5) slidably connected in the balance hole (2) and connected to the adjusting rod (4); The counterweight (5) has an anti-slip layer on its outer periphery; The outer surface of the cover (3) is flush with the outer surface of the rotor (1), and the outer end of the cover (3) has a truncated cone (6). The adjusting rod (4) passes through the truncated cone (6) and exits the cover (3). The outer end of the adjusting rod (4) is also provided with a handle (7).

2. The high-speed air compressor for hydrogen fuel cell vehicles as described in claim 1, characterized in that, The outer end of the balance hole (2) has a corresponding concave hole for the cover (3), and the cover (3) is fastened in the concave hole and welded to the rotor (1) as a whole.

3. A high-speed air compressor for a hydrogen fuel cell vehicle as described in claim 2, characterized in that, The adjusting rod (4) has multiple sections of coating in different colors.

4. A high-speed air compressor for a hydrogen fuel cell vehicle as described in claim 3, characterized in that, A groove (8) is provided on one side of the adjusting rod (4) along the axial direction of the adjusting rod (4). The groove (8) passes through the thread on the adjusting rod (4), and each section of the coating is disposed in the groove (8).

5. A high-speed air compressor for a hydrogen fuel cell vehicle as described in claim 4, characterized in that, The counterweight (5) has chamfers at both the front and rear ends.

6. A high-speed air compressor for a hydrogen fuel cell vehicle as described in claim 5, characterized in that, The outer periphery of the handle (7) is covered with anti-slip texture.

7. A high-speed air compressor for a hydrogen fuel cell vehicle as described in claim 6, characterized in that, The outer end of the handle (7) also has a keyway (9).

8. A high-speed air compressor for a hydrogen fuel cell vehicle as described in claim 7, characterized in that, The rotor (1) has inverted inclined surfaces (10) on both ends of its outer wall, and each of the balance holes (2) is evenly spaced on the inverted inclined surfaces (10) around the circumference of the rotor (1).

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