Novel motor sound-proof cover and wheel cover composite sound-proof and noise-reducing structure for bus driven by wheel-side motor

Abstract

The utility model discloses a novel motor sound-proof cover and wheel cover composite sound-proof and noise-reducing structure of a bus driven by a wheel-side motor. The structure comprises the wheel-side motor, a sound-proof cover and a peripheral framework, the sound-proof cover is installed on one side of the wheel-side motor, an output shaft of the wheel-side motor is sleeved with a speed reducer in a close fit mode, the end, away from the speed reducer, of the output shaft of the wheel-side motor is sleeved with a hub in a close fit mode, and a tire is installed on the outer side of the hub. According to the utility model, the noise generated during the operation of the wheel-side motor can be greatly controlled in the sound-proof cover through the sound-proof cover, so that the noise is effectively prevented from diffusing outwards, and the firmness of the sound-proof shell after installation can be effectively improved through the wheel cover framework; meanwhile, noise generated by low-frequency resonance and noise generated during rotation of tires can be further filtered through the sound insulation shell, and meanwhile, most high-frequency sound waves can be reflected to the ground, so that the noise entering a compartment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile sound insulation, in particular to a novel wheel-side motor driven bus motor sound insulation cover wheel cover composite sound insulation and noise reduction structure. Background Art

[0002] In the context of the rapid development of new energy vehicles, the development of distributed drive products represented by hub electric wheel assemblies and wheel-side electric drive assemblies is gradually gaining popularity. The first advantage is energy saving. Compared with centralized drive, this method can save about 15% energy; the second advantage is that it is convenient to arrange low-floor buses, shuttle buses and other models. If there is no space left by wheel-side drive or hub drive system, full flat low-floor models will be difficult to achieve; the third advantage is that it makes a huge contribution to the lightweight of the entire vehicle, it can reduce the weight of the entire vehicle by about 15%; in addition, it has the advantage of strong reliability, and is more conducive to the realization of future intelligent drive and intelligent driving technologies.

[0003] At present, when the existing new energy buses are running, the wheel hub motor rotor constitutes the rotational inertia of the wheel, which affects the acceleration performance of the vehicle. Therefore, when the whole vehicle is running, the wheel side motor will generate a lot of noise when it is working. In particular, the whistling sound generated during rapid acceleration and deceleration can pass through the wheel cover into the car and the driving area, affecting the passengers in the car and the working environment of the driver, and reducing the driving quality of the whole vehicle. Utility Model Content

[0004] The utility model aims to solve one of the technical problems existing in the prior art or related technology.

[0005] To this end, the technical solution adopted in this utility model is:

[0006] A novel wheel-side motor driven bus motor soundproof cover wheel cover composite sound insulation and noise reduction structure, comprising: a wheel-side motor, a soundproof cover, and a peripheral frame; the soundproof cover is installed on one side of the wheel-side motor, the output shaft of the wheel-side motor is tightly fitted with a reducer, the output shaft of the wheel-side motor is tightly fitted with a wheel hub at one end away from the reducer, and a tire is installed on the outside of the wheel hub; a wheel cover frame is installed on one side of the peripheral frame, and a sound insulation shell is installed on the outside of the wheel cover frame;

[0007] A plurality of air bags are fixed to the outer side wall of the wheel-side motor, the bottom end of the air bag is movably connected with a connecting frame, and a shock absorber is installed at one end of the connecting frame away from the air bag.

[0008] Preferably, the sound insulation shell includes an aluminum plate a arranged on one side of the wheel cover frame, a plastic sound insulation board a is arranged on one side of the aluminum plate a, a plastic sound insulation board b is installed on the side of the plastic sound insulation board a away from the aluminum plate a, an aluminum plate b is installed on the side of the plastic sound insulation board b away from the plastic sound insulation board a, a damping slurry a is coated on one side of the plastic sound insulation board b, a plurality of square steel sections are installed on the side where the plastic sound insulation board a and the plastic sound insulation board b are close to each other, the cavity of the square steel section is filled with water-based foam glue, and sound-absorbing cotton a is arranged on the side where the plastic sound insulation board a and the plastic sound insulation board b are close to each other.

[0009] Preferably, the soundproof cover includes a soundproof shell, a side of the soundproof shell close to the wheel-side motor is paved with sound-absorbing cotton b, a side of the sound-absorbing cotton b close to the soundproof shell is coated with damping slurry b, and a side of the sound-absorbing cotton b away from the soundproof shell is adhered and paved with single-sided adhesive.

[0010] Preferably, the sound insulation shell and the wheel-side motor are installed and fixed by four bolts, and the side of the single-sided adhesive away from the sound-absorbing cotton b is adhered to the outer side wall of the wheel-side motor.

[0011] Preferably, the aluminum plate a and the plastic sound insulation board a, and the aluminum plate b and the plastic sound insulation board b are all fixed by rivets.

[0012] Preferably, the thickness of the aluminum plate a is 3.0MM, and the thickness of the aluminum plate b is 1.0MM.

[0013] Preferably, the outer frame is fixedly connected to the wheel cover frame.

[0014] Preferably, the reducer and the wheel hub are fixed by a plurality of bolts.

[0015] By adopting the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0016] 1. In the utility model, the noise generated by the wheel-side motor during operation can be largely controlled within the sound insulation cover, thereby effectively preventing the noise from spreading outward. The wheel cover frame can effectively improve the firmness of the sound insulation shell after installation. At the same time, the sound insulation shell can further filter out the noise generated by low-frequency resonance and the noise generated by the rotation of the tire. At the same time, most of the high-frequency sound waves can be reflected to the ground, thereby reducing the noise entering the car.

[0017] 2. In the utility model, the damping slurry a can effectively reduce the medium and low frequency noise generated by the car when it is working, and the plastic sound insulation board a can effectively reflect the high frequency sound waves to the ground, thereby reducing the noise entering the car. At the same time, the sound-absorbing cotton a can effectively absorb and reduce the remaining medium and low frequency noise, and then the plastic sound insulation board b can reflect the remaining high frequency sound waves, thereby effectively reducing the noise entering the car. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of an embodiment of the utility model;

[0019] Figure 2 It is a side structural schematic diagram of an embodiment of the utility model;

[0020] Figure 3 for Figure 2 A local enlarged schematic diagram of area A;

[0021] Figure 4 This is a schematic diagram of the installation of a soundproof cover according to an embodiment of the utility model;

[0022] Figure 5 for Figure 4 A partial enlarged schematic diagram of area B

[0023] Figure 6 for Figure 4 B-1 Local enlarged schematic diagram of the area;

[0024] Figure 7 for Figure 2 A-1 is a schematic diagram of a partial enlargement of area.

[0025] Figure numerals: 1. wheel-side motor; 2. sound insulation cover; 21. sound insulation shell; 22. sound-absorbing cotton b; 23. damping slurry b; 24. single-sided adhesive; 3. outer frame; 4. reducer; 5. wheel hub; 6. tire; 7. wheel cover frame; 8. sound insulation shell; 81. aluminum plate a; 82. sound insulation board a; 83. sound insulation board b; 84. aluminum plate b; 85. damping slurry a; 86. square steel; 87. water-based foam glue; 88. sound-absorbing cotton a; 9. airbag; 10. connecting frame; 11. shock absorber; 12. bolt; 13. rivet. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0027] It should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention.

[0028] The following describes a novel wheel-side motor driven bus motor sound insulation cover wheel cover composite sound insulation and noise reduction structure provided by some embodiments of the utility model in conjunction with the accompanying drawings.

[0029] Embodiment 1:

[0030] Combination Figure 1-7 As shown, the utility model provides a novel wheel-side motor driven bus motor soundproof cover wheel cover composite sound insulation and noise reduction structure, comprising: a wheel-side motor 1, a soundproof cover 2, and an outer frame 3; the soundproof cover 2 is installed on one side of the wheel-side motor 1, the output shaft of the wheel-side motor 1 is tightly fitted with a reducer 4, the end of the output shaft of the wheel-side motor 1 away from the reducer 4 is tightly fitted with a wheel hub 5, and a tire 6 is installed on the outside of the wheel hub 5; a wheel cover frame 7 is installed on one side of the outer frame 3, and a soundproof shell 8 is installed on the outside of the wheel cover frame 7; a plurality of airbags 9 are fixed to the outer wall of the wheel-side motor 1, the bottom end of the airbag 9 is movably connected with a connecting frame 10, and a shock absorber 11 is installed on the end of the connecting frame 10 away from the airbag 9, the soundproof shell 8 and the soundproof cover 2 can greatly reduce the noise entering the car, and the soundproof shell 8 can further reduce the noise generated by the tire 6 when it rotates.

[0031] The sound insulation shell 8 includes an aluminum plate a81 arranged on one side of the wheel cover frame 7, a plastic sound insulation board a82 is arranged on one side of the aluminum plate a81, a plastic sound insulation board b83 is installed on the side of the plastic sound insulation board a82 away from the aluminum plate a81, an aluminum plate b84 is installed on the side of the plastic sound insulation board b83 away from the plastic sound insulation board a82, a damping slurry a85 is coated on one side of the plastic sound insulation board b83, and a plurality of square steel sections 86 are installed on the side where the plastic sound insulation board a82 and the plastic sound insulation board b83 are close to each other, and the cavity of the square steel section 86 is filled with There is water-based foam glue 87, and sound-absorbing cotton a88 is arranged on the side where the plastic sound insulation board a82 and the plastic sound insulation board b83 are close to each other. The damping slurry a85 can reduce the medium and low frequency noise generated by the wheel-side motor 1 in the motion resonance, and the plastic sound insulation board b83 can effectively reflect a part of the high frequency sound waves, and then the sound-absorbing cotton a88 absorbs the remaining medium and low frequency sound waves, and then the plastic sound insulation board a82 reflects the remaining high frequency sound waves, thereby greatly reducing the noise entering the car.

[0032] The soundproof cover 2 includes a soundproof shell 21, and sound-absorbing cotton b22 is laid on the side of the soundproof shell 21 close to the wheel-side motor 1, and damping slurry b23 is coated on the side where the sound-absorbing cotton b22 and the soundproof shell 21 are close to each other. Single-sided adhesive 24 is adhered and laid on the side of the sound-absorbing cotton b22 away from the soundproof shell 21. The damping slurry b23 can reduce the vibration generated during the operation of the wheel-side motor 1.

[0033] The soundproof shell 21 and the wheel-side motor 1 are installed and fixed by four bolts 12. The single-sided adhesive 24 is adhered to the outer wall of the wheel-side motor 1 on the side away from the sound-absorbing cotton b22. The single-sided adhesive 24 can effectively reduce the noise generated by the wheel-side motor 1 during operation.

[0034] The aluminum plate a81 and the plastic sound insulation board a82, and the aluminum plate b84 and the plastic sound insulation board b83 are all fixed by rivets 13. The rivets 13 can improve the firmness and stability of the aluminum plate a81 and the plastic sound insulation board a82, and the aluminum plate b84 and the plastic sound insulation board b83 when they are fixed together.

[0035] The thickness of aluminum plate a81 is 3.0MM, and the thickness of aluminum plate b84 is 1.0MM.

[0036] The outer frame 3 is fixedly connected to the wheel arch frame 7.

[0037] The reducer 4 and the wheel hub 5 are fixed by a plurality of bolts 12 , and the fixing by the plurality of bolts 12 can increase the stability of the wheel hub 5 when it rotates.

[0038] The working principle and use process of the utility model: when it is necessary to reduce the noise generated by the wheel-side motor 1, first the vibration and noise generated by the operation of the wheel-side motor 1 can be reduced by the single-sided adhesive 24, and then the noise is reduced by the sound-absorbing cotton b22 to reduce the energy of the medium and low frequency sound waves, and then the noise and vibration pass through the damping slurry b23, which can effectively reduce the low-frequency noise of the low-frequency resonance of the sound insulation shell 21, and when the noise passes through the sound insulation shell 21, the high-frequency sound waves can be greatly reduced, and when the noise passes through the sound insulation shell 21 and the aluminum plate b84 to reach the damping slurry a85, the medium and low frequency noise can be effectively reduced, and then the noise reflects a part of the high-frequency sound waves through the plastic sound insulation board b83, and then the remaining noise passes through the sound-absorbing cotton a88, and the sound-absorbing cotton a88 absorbs the remaining medium and low frequency sound waves, and then the high-frequency sound waves in the noise are reflected by the plastic sound insulation board a82, thereby reducing the noise entering the car.

[0039] In the present invention, the term "plurality" means two or more than two, unless otherwise clearly defined. The term "and / or" used herein includes any and all combinations of one or more related listed items. The terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "connect" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0040] It should be noted that when an element is referred to as being "assembled on", "installed on", "fixed on" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0041] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0042] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A new type of wheel-side motor driven bus motor sound insulation cover wheel cover composite sound insulation and noise reduction structure, characterized in that: include: Wheel-side motor (1), soundproof cover (2), and peripheral frame (3); The soundproof cover (2) is installed on one side of the wheel-side motor (1); the output shaft of the wheel-side motor (1) is tightly sleeved with a reducer (4); the end of the output shaft of the wheel-side motor (1) away from the reducer (4) is tightly sleeved with a wheel hub (5); and a tire (6) is installed on the outer side of the wheel hub (5); A wheel cover frame (7) is installed on one side of the peripheral frame (3), and a sound insulation shell (8) is installed on the outer side of the wheel cover frame (7); A plurality of air bags (9) are fixed to the outer side wall of the wheel-side motor (1), the bottom end of the air bag (9) is movably connected to a connecting frame (10), and a shock absorber (11) is installed at one end of the connecting frame (10) away from the air bag (9).

2. According to claim 1, a new wheel-side motor driven bus motor sound insulation cover wheel cover composite sound insulation and noise reduction structure is characterized in that: The sound insulation shell (8) comprises an aluminum plate a (81) arranged on one side of the wheel cover frame (7), a plastic sound insulation board a (82) is arranged on one side of the aluminum plate a (81), a plastic sound insulation board b (83) is installed on the side of the plastic sound insulation board a (82) away from the aluminum plate a (81), an aluminum plate b (84) is installed on the side of the plastic sound insulation board b (83) away from the plastic sound insulation board a (82), a damping slurry a (85) is coated on one side of the plastic sound insulation board b (83), a plurality of square steel sections (86) are installed on the side where the plastic sound insulation board a (82) and the plastic sound insulation board b (83) are close to each other, the cavity of the square steel section (86) is filled with water-based foam glue (87), and a sound-absorbing cotton a (88) is arranged on the side where the plastic sound insulation board a (82) and the plastic sound insulation board b (83) are close to each other.

3. According to claim 1, a novel wheel-side motor driven bus motor sound insulation cover wheel cover composite sound insulation and noise reduction structure is characterized in that: The soundproof cover (2) comprises a soundproof outer shell (21), a side of the soundproof outer shell (21) close to the wheel-side motor (1) is paved with sound-absorbing cotton b (22), a side of the sound-absorbing cotton b (22) close to the soundproof outer shell (21) is coated with damping slurry b (23), and a side of the sound-absorbing cotton b (22) away from the soundproof outer shell (21) is adhered and paved with single-sided adhesive (24).

4. According to claim 3, a new wheel-side motor driven bus motor sound insulation cover wheel cover composite sound insulation and noise reduction structure is characterized in that: The soundproof housing (21) and the wheel-side motor (1) are installed and fixed by four bolts (12), and the side of the single-sided adhesive (24) away from the sound-absorbing cotton b (22) is adhered to the outer wall of the wheel-side motor (1).

5. According to claim 2, a new wheel-side motor driven bus motor sound insulation cover wheel cover composite sound insulation and noise reduction structure is characterized in that: The aluminum plate a (81) and the plastic sound insulation plate a (82), and the aluminum plate b (84) and the plastic sound insulation plate b (83) are all fixed by rivets (13).

6. The novel wheel-side motor driven bus motor sound insulation cover wheel cover composite sound insulation and noise reduction structure according to claim 5 is characterized in that: The thickness of the aluminum plate a (81) is 3.0 MM, and the thickness of the aluminum plate b (84) is 1.0 MM.

7. The novel wheel-side motor driven bus motor sound insulation cover wheel cover composite sound insulation and noise reduction structure according to claim 1 is characterized in that: The outer frame (3) is fixedly connected to the wheel cover frame (7).

8. The novel wheel-side motor driven bus motor sound insulation cover wheel cover composite sound insulation and noise reduction structure according to claim 1 is characterized in that: The reducer (4) and the wheel hub (5) are fixed by a plurality of bolts (12).

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