Large-containing-cavity special-shaped hub for electric wheel

Abstract

The large-containing-cavity special-shaped hub for the electric wheel comprises a barrel and an end plate which are connected into a whole, a sleeve communicated with an inner cavity of the barrel is arranged on the outer side of the end plate along the axis, the inner cavity of the barrel is a driving motor containing cavity, first bolt holes distributed in the circumferential direction are formed in the end of the barrel, and the first bolt holes are used for being connected with a speed reduction device. Second bolt holes distributed in the circumferential direction are formed in the outer side of the end plate and located on the periphery of the sleeve, the second bolt holes are used for being connected with a brake disc of a brake, and an inner cavity of the sleeve is used for installing a hub bearing. The electric wheel has the advantages of being simple in structure, high in functionality, good in safety and reliable, and the requirement for the bearing function of the electric wheel can be completely met.

Description

TECHNICAL FIELD

[0001] The present application relates to a wheel hub, in particular to a large-cavity special-shaped wheel hub for an electric wheel. BACKGROUND

[0002] In the field of vehicles, the electric wheel assembly is considered as one of the effective solutions for electric drive technology by integrating and deeply integrating the reduction device, wheel hub motor, service brake, parking brake and bearing mechanism, fully releasing the frame space, shortening the transmission path, improving the transmission efficiency and reducing the overall weight. At present, the technical route of the electric wheel mainly includes two typical schemes of "reduction + brake + drive" and "reduction + drive + brake". The main difference between the two configurations of electric wheels is that the drive motor is external and the brake is internal, which is simpler in structure and lower in cost compared with the latter; the drive motor is internal and the brake is external, which improves the brake cooling environment and the brake reliability and safety compared with the former. However, due to the high requirement of the bearing mechanism for the electric wheel of this configuration, the structure is more complex, and there is no mature product in the field and industry at present. Therefore, the development of the wheel hub required for the electric wheel of this configuration to meet the bearing function of the electric wheel is of great significance to the development of electric drive technology in the field of vehicles. SUMMARY

[0003] The purpose of the present application is to provide a large-cavity special-shaped wheel hub for an electric wheel, which has the advantages of simple structure, strong functionality, good safety and reliability, and can fully meet the bearing function requirements of the electric wheel.

[0004] To solve the above-mentioned problems existing in the prior art, the present application provides a large-cavity special-shaped wheel hub for an electric wheel, which comprises a cylinder and an end plate connected as one body, a sleeve is provided on the outer side of the end plate along the axis and is in communication with the inner cavity of the cylinder, the inner cavity of the cylinder is a drive motor cavity, the end part of the cylinder is provided with a first bolt hole distributed in the circumferential direction, the first bolt hole is used for connecting a reduction device, the outer side of the end plate and the periphery of the sleeve are provided with a second bolt hole distributed in the circumferential direction, the second bolt hole is used for connecting a brake disc of a brake, and the inner cavity of the sleeve is used for installing a wheel hub bearing.

[0005] Further, the large-cavity special-shaped wheel hub for an electric wheel of the present application, wherein the brake disc of the brake is a solid disc or a ventilated disc, and the brake caliper matched with the brake disc is a floating disc brake caliper.

[0006] Further, the large-cavity special-shaped wheel hub for an electric wheel of the present application, wherein the brake disc of the brake is fixed on the outer side of the end plate through the second bolt hole and the matched bolt.

[0007] Further, the application discloses a large-cavity special-shaped hub for an electric wheel, wherein the speed reduction device is fixed on the hub through first bolt holes and matched bolts and is connected to the wheel through the hub.

[0008] Further, the application discloses a large-cavity special-shaped hub for an electric wheel, wherein the first bolt holes are arranged in more than six on the circumference of the barrel.

[0009] Further, the application discloses a large-cavity special-shaped hub for an electric wheel, wherein the second bolt holes are arranged in more than ten on the circumference of the end plate.

[0010] Further, the application discloses a large-cavity special-shaped hub for an electric wheel, wherein the brake disc rotates synchronously with the hub, when the brake is braked, the brake disc is decelerated, and the hub is decelerated synchronously with the speed reduction device and the wheel.

[0011] Further, the application discloses a large-cavity special-shaped hub for an electric wheel, wherein the hub bearing installed in the sleeve inner cavity is a roller bearing or a grease lubrication bearing.

[0012] Further, the application discloses a large-cavity special-shaped hub for an electric wheel, wherein the speed reduction device and the hub bear the load transmitted by the wheel and transmit the load to the electric wheel supporting device.

[0013] Further, the application discloses a large-cavity special-shaped hub for an electric wheel, wherein the driving motor is installed on the electric wheel supporting device in the inner cavity of the barrel, and the barrel is coupled with the function of the driving motor shell.

[0014] Compared with the prior art, the large-cavity special-shaped hub for electric wheel has the following advantages: the barrel and the end plate are connected as a whole, the sleeve in communication with the inner cavity of the barrel is arranged outside the end plate along the axis, the first bolt hole distributed in the circumferential direction is arranged at the end of the barrel, the second bolt hole distributed in the circumferential direction is arranged outside the end plate and at the periphery of the sleeve, wherein the inner cavity of the barrel is the driving motor cavity, the first bolt hole is used for connecting the speed reducer, the second bolt hole is used for connecting the brake disc of the brake, and the inner cavity of the sleeve is used for mounting the hub bearing. Thus, the large-cavity special-shaped hub for electric wheel is formed, which has the advantages of simple structure, strong functionality, good safety and reliability. In actual application, the hub, the driving motor, the speed reducer and the brake caliper of the brake are respectively mounted on the supporting device (the supporting shaft of the steering knuckle), wherein the hub bearing is arranged between the sleeve of the hub and the supporting device, the stator of the driving motor is fixed on the supporting device, the rotor of the driving motor is drivingly connected with the speed reducer and is mounted on the supporting device through the motor bearing, and the speed reducer is fixed on the supporting device and is drivingly connected with the hub. During the driving of the vehicle, the rotor of the driving motor drives the wheel to rotate through the speed reducer and the hub, and when the brake caliper of the brake clamps the brake disc fixed on the hub to brake, the brake disc is decelerated, and the hub is synchronously decelerated with the speed reducer and the wheel. The large-cavity special-shaped hub formed by the barrel, the end plate and the sleeve in the application is connected with the speed reducer at the end of the barrel, and the sleeve is mounted on the supporting device through the hub bearing. During the driving of the vehicle, the speed reducer and the hub together bear the load transmitted by the wheel and transmit the load to the supporting device of the electric wheel, so that the functional requirements of the electric wheel bearing are fully met. By fixing the brake disc of the brake outside the end plate, the heat dissipation environment of the brake is greatly improved, and the thermal stability of the brake is improved. By arranging the driving motor in the inner cavity of the barrel of the hub, the hub is coupled with the shell function of the driving motor, the motor body can be effectively protected, the full-floating support of the driving motor is realized, and the working environment of the motor is improved.

[0015] The large-cavity special-shaped hub for electric wheel will be described in detail below in combination with the specific embodiments shown in the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The structure of the large-cavity special-shaped hub for electric wheel Figure One ;

[0017] Figure 2 The structure of the large-cavity special-shaped hub for electric wheel Figure Two . DETAILED DESCRIPTION

[0018] First of all, it needs to be explained that the up, down, left, right, front, back and other orientation words in the present application are described according to the drawings for the purpose of understanding, and not to limit the technical solutions and the scope of protection of the present application.

[0019] As Figure 1 and Figure 2 The specific embodiment of the large-cavity special-shaped hub for electric wheel of the present application is shown in the drawings, which comprises a cylinder 1 and an end plate 2 connected as a whole, a sleeve 3 is arranged outside the end plate 2 along the axis and is communicated with the inner cavity of the cylinder 1, the inner cavity of the cylinder 1 is used as a driving motor cavity 11, a first bolt hole 12 is arranged at the end of the cylinder 1 and is distributed in the circumferential direction, the first bolt hole 12 is used as a connecting hole for connecting the speed reducer, a second bolt hole 21 is arranged outside the end plate 2 and is in the periphery of the sleeve 3 and is distributed in the circumferential direction, the second bolt hole 21 is used as a connecting hole for connecting the brake disc, and the inner cavity of the sleeve 3 is used as a hole position for mounting the hub bearing, wherein the brake disc is a component part of the brake.

[0020] Through the above arrangement, a large-cavity special-shaped hub for electric wheel with simple structure, strong functionality, good safety and reliability is formed. In actual application, the hub, the driving motor, the speed reducer and the brake caliper of the brake are respectively installed on the supporting device (the supporting shaft of the steering supporting joint), wherein the hub bearing is arranged between the sleeve 3 of the hub and the supporting device, the driving motor is arranged in the cylinder 1 of the hub, the stator of the driving motor is fixed on the supporting device, the rotor of the driving motor is drivingly connected with the speed reducer and is installed on the supporting device through the motor bearing, the speed reducer is fixed on the supporting device and is drivingly connected with the hub, and the brake disc is fixed outside the end plate 2 and rotates synchronously with the hub. During the driving process of the vehicle, the rotor of the driving motor drives the wheel to rotate through the speed reducer and the hub, and when the brake caliper of the brake clamps the brake disc fixed on the hub to brake, the brake disc is decelerated, and the hub is synchronously decelerated with the speed reducer and the wheel. The large-cavity special-shaped hub composed of the cylinder 1, the end plate 2 and the sleeve 3 is designed in the present application, the end of the cylinder 1 is connected with the speed reducer, and the sleeve 3 is installed on the supporting device by using the hub bearing, the load transmitted by the wheel during the driving process of the vehicle is borne by the speed reducer and the hub together, and is transmitted to the supporting device of the electric wheel, which can completely meet the functional requirements of the electric wheel bearing; by fixing the brake disc of the brake outside the end plate 2, the heat dissipation environment of the brake is greatly improved, and the thermal stability of the brake is improved; by arranging the driving motor in the inner cavity of the cylinder 1 of the hub, not only the hub is coupled with the function of the driving motor shell, which can effectively protect the motor body, but also the driving motor can be fully supported, and the working environment of the motor is improved. It should be noted that the speed reducer and the brake in this paper are both existing devices in the art, and their structures and connection modes are well known to those skilled in the art.

[0021] As a specific embodiment, the application adopts a solid disc or a ventilated disc for the brake disc of the brake, and adopts a floating disc brake caliper for the brake caliper matched with the brake disc. However, the brake disc is not limited to the solid disc or the ventilated disc, and the brake caliper is not limited to the floating disc brake caliper. Other types of brake discs and brake calipers can also achieve the technical purpose of the application. As a rotary bearing structure, the hub bearing installed in the inner cavity of the sleeve 3 can adopt a roller bearing, or the sleeve 3 can be directly sleeved on the support device, and grease lubrication can be injected between the sleeve 3 and the support device. The grease lubrication and the sleeve 3 itself can also serve as a bearing to achieve the technical purpose of the application. In actual application, in order to improve the disassembly and assembly convenience, the application fixes the brake disc of the brake on the outer side of the end plate 2 through the second bolt hole 21 and the matched bolt, fixes the reduction device on the hub through the first bolt hole 12 and the matched bolt, and connects the hub to the wheel. In order to ensure the connection stability and safety and reliability, the application usually uniformly arranges more than six first bolt holes 12 along the circumference of the cylinder 1, and uniformly arranges more than ten second bolt holes 21 along the circumference of the end plate 2.

[0022] The actual application shows that the large-cavity special-shaped hub for the electric wheel provided by the application can produce the following beneficial effects: a, can meet the functional requirements of the electric wheel bearing; b, greatly improves the brake heat dissipation environment and improves the thermal stability of the brake; c, couples the driving motor shell function and plays a protective role for the motor body, can realize full-floating support of the driving motor, and avoids that the driving motor body directly bears the load transmitted from the wheel; d, the arrangement mode of arranging the driving motor in the hub avoids the problem of unstable unbalanced magnetic pull caused by the motor stator-rotor air gap in the conventional configuration, and improves the motor working environment.

[0023] The above embodiments only describe the preferred embodiments of the application, and do not limit the protection scope of the application. Various modifications made by those skilled in the art according to the technical solution of the application shall fall within the protection scope of the claims of the application without departing from the design concept of the application.

Claims

1. A large-cavity special-shaped wheel hub for an electric wheel, characterized in that: The invention comprises a cylinder (1) and an end plate (2) connected as one body, a sleeve (3) is provided on the outer side of the end plate (2) along the axis thereof and is communicated with the inner cavity of the cylinder (1), the inner cavity of the cylinder (1) is a driving motor chamber (11), the end of the cylinder (1) is provided with first bolt holes (12) distributed along the circumferential direction, the first bolt holes (12) are used to connect the reduction device, the outer side of the end plate (2) and the outer periphery of the sleeve (3) are provided with second bolt holes (21) distributed along the circumferential direction, the second bolt holes (21) are used to connect the brake disc of the brake, and the inner cavity of the sleeve (3) is used to install the wheel hub bearing.

2. The large-cavity special-shaped wheel hub for an electric wheel according to claim 1, characterized in that: The brake disc of the brake is a solid disc or a ventilated disc, and the brake caliper matched with the brake disc is a floating disc brake caliper.

3. The large-cavity special-shaped wheel hub for an electric wheel according to claim 2, characterized in that: The brake disc of the brake is fixed to the outside of the end plate (2) through the second bolt hole (21) and the matching bolts.

4. The large-cavity special-shaped wheel hub for an electric wheel according to claim 2, characterized in that: The reduction gear is fixed to the wheel hub through the first bolt hole (12) and the matching bolts and is connected to the wheel through the wheel hub.

5. The large-cavity special-shaped wheel hub for an electric wheel according to claim 2, characterized in that: More than six of the first bolt holes (12) are evenly arranged along the circumference of the cylinder (1).

6. The large-cavity special-shaped wheel hub for an electric wheel according to claim 2, characterized in that: More than ten second bolt holes (21) are evenly arranged along the circumference of the end plate (2).

7. The large-cavity special-shaped wheel hub for an electric wheel according to claim 2, characterized in that: The brake disc rotates synchronously with the wheel hub. When the brake is applied, the brake disc slows down, and the wheel hub, along with the deceleration device and the wheel, slows down synchronously.

8. The large-cavity special-shaped wheel hub for an electric wheel according to claim 2, characterized in that: The hub bearing installed in the inner cavity of the sleeve (3) is a roller bearing or a grease-lubricated bearing.

9. The large-cavity special-shaped wheel hub for an electric wheel according to claim 2, characterized in that: The reduction gear and the wheel hub together bear the load transmitted by the wheel and transmit the load to the electric wheel supporting device.

10. The large-cavity special-shaped wheel hub for an electric wheel according to claim 2, characterized in that: The drive motor is mounted on the electric wheel support device in the inner cavity of the cylinder (1), and the cylinder (1) is coupled with the housing function of the drive motor.

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