WO2018054165A1

WO2018054165A1 - Centrifugal gear assembly with input from multiple driving devices

Info

Publication number: WO2018054165A1
Application number: PCT/CN2017/094896
Authority: WO
Inventors: 丁亚洲
Original assignee: 蔚来汽车有限公司
Priority date: 2016-09-21
Filing date: 2017-07-28
Publication date: 2018-03-29
Also published as: CN106838248B; CN106838248A

Abstract

A centrifugal gear assembly with input from multiple driving devices, comprising an outer gear (1) provided with a side cavity (11, 13), a rotor (2, 3) mounted in the side cavity (11, 13), and a radially slidable slide block (4) provided on the rotor (2, 3). The rotor (2, 3) is driven by a driving device to rotate, so that the slide block (4) is in contact with the inner wall of the side cavity (11, 13) when the rotating speed of the rotor (2, 3) reaches a threshold, thus driving the outer gear (1) to rotate. Conversely, the slide block (4) retracts when the speed of the rotor (2, 3) is lower than the threshold, and the outer gear (1) loses power and gradually stops rotating. The problems of a limited number of power sources and difficult installation caused by a large radial size in an existing power source parallel input device are resolved. The centrifugal gear assembly can implement synchronous inputting of multiple driving devices, and reduce the radial size, and the rotor (2, 3) and the outer gear (1) are flexibly connected to prevent the impact on a connecting device during sudden starting, so that the power transmission is more stable.

Description

Multi-driver input centrifugal gear assembly

Technical field

The invention belongs to the field of mechanical transmission, and in particular provides a centrifugal gear assembly for inputting multiple driving devices.

Background technique

When the load cannot be directly driven by a single drive unit, it is often necessary to reduce the drive speed by the speed reduction mechanism to increase the output torque to drive the load. However, in consideration of the problem of the rotational speed, it is common to incorporate a plurality of driving devices to drive the load at the same time. At present, a common method is to drive a load in parallel by a plurality of driving devices through planetary gears. The planetary gear mainly includes a sun gear, an inner ring gear and a plurality of planetary gears disposed therebetween, and the plurality of driving devices are combined and output through the meshing between the gears.

However, whether it is a planetary gear or other connection structure, the number of power sources input in parallel is often limited by the structure, and the radial size is too large to be installed.

Accordingly, there is a need in the art for a new power source parallel input device to address the above problems.

Summary of the invention

In order to solve the above problems in the prior art, in order to solve the problem that the existing power source parallel input device is limited by structure, the number of power sources input in parallel is limited, and the radial size is too large to be installed, the present invention provides a multi-function. a centrifugal gear assembly input by the driving device, the centrifugal gear assembly including an external gear provided with at least one side cavity, each of the side cavities being provided with a rotor, the centrifugal gear assembly further comprising a radially slidable At least one slider disposed on the rotor, the rotor being rotated by a driving device, such that when the rotational speed of the rotor reaches a certain threshold, the slider contacts an inner wall of the side cavity, thereby driving the The outer gear rotates.

In a preferred embodiment of the centrifugal gear assembly described above, at least one chute is disposed on an outer surface of the rotor, and each of the sliders is radially slidably mounted in each of the chutes.

In a preferred embodiment of the centrifugal gear assembly described above, one end of the rotor is provided with an extension shaft for connecting the rotor to the drive means.

In a preferred embodiment of the centrifugal gear assembly described above, the inner bottom of the side chamber is provided with a counterbore for radially securing the rotor.

In a preferred embodiment of the centrifugal gear assembly described above, the other end of the rotor is provided with a boss, and the boss is installed in the counterbore.

In a preferred embodiment of the centrifugal gear assembly described above, the centrifugal gear assembly includes four sliders that are evenly disposed on the rotor in a circumferential direction.

In a preferred embodiment of the centrifugal gear assembly described above, the outer gear is provided with two left and right side chambers, one for each of the side chambers.

In another aspect, each of the side cavities may further include at least two stepped cavities communicating with each other, each of the step cavities being provided with one of the rotors, one end of each of the rotors being connected to a sleeve A shaft, each of which is connected to a drive unit to achieve multiple power inputs on the same side.

In still another aspect, a plurality of rotors may be disposed in each of the side chambers, the plurality of rotors being fixed in series to a projecting shaft and coupled to a drive unit by the extension shaft.

It can be understood by those skilled in the art that in the preferred technical solution of the present invention, the external gear is driven to rotate by the frictional force between the external gear and the rotor. Specifically, the two sides of the external gear are respectively provided with side cavities, and the rotor is mounted. In the side cavity of the external gear, the rotor is again provided with a slider slidable along its radial direction. The rotor is driven to rotate by the driving device. When the rotation speed of the rotor reaches a certain threshold, the slider is pulled out, and the slider contacts the inner wall of the side cavity of the external gear to generate friction. As the rotation speed of the rotor is further increased, the friction will gradually increase. Increase until the external gear is driven to rotate; conversely, when the rotor speed is lower than the threshold, the slider is retracted, the external gear loses power, and the rotation is gradually stopped. The centrifugal gear assembly of the invention can not only realize the input of the multi-drive device, but also has a flexible connection between the rotor and the external gear, avoiding the sudden start of the impact on the connecting device and making the power transmission more stable.

DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a front elevational view of a centrifugal gear assembly of a multi-drive input of the present invention.

2 is a side cross-sectional view of the centrifugal gear assembly of the multi-drive device of the present invention.

3 is a schematic view of a plurality of rotors of a centrifugal gear assembly of a multi-drive device of the present invention connected in parallel through a bushing.

Figure 4 is a schematic illustration of the plurality of rotors of the centrifugal gear assembly of the multi-drive input of the present invention coupled in series on an extended shaft.

detailed description

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention, and are not intended to limit the scope of the present invention. For example, although the size and the mating relationship of the components in the drawings are drawn in a certain proportional relationship, the proportional relationship is not constant, and those skilled in the art can adjust them according to needs to adapt to specific applications.

It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. The terminology of the orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, which is merely for convenience of description, and does not indicate or imply that the device or component must have a specific orientation, constructed and operated in a specific orientation. Therefore, it should not be construed as limiting the invention. Moreover, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In addition, it should be noted that in the description of the present invention, the terms "installation", "connected", and "connected" are to be understood broadly, and may be fixed connections, for example, or It is a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be internal communication between the two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

As shown in FIGS. 1 and 2, the centrifugal gear assembly input from the multi-drive device mainly includes an external gear 1, a first rotor 2, a second rotor 3, and a slider 4. The first side cavity 11 (the right side of the external gear 1 in FIG. 2) and the second side cavity 13 are provided on both sides of the external gear 1 (the external gear in FIG. 2) The left side of 1). Preferably, the first side cavity 11 and the second side cavity 13 are coaxial with the external gear 1, and the first side cavity 11 is provided with the first rotor 2, and the second side cavity 13 is provided with the second rotor 3. A first counterbore 12 and a second counterbore 14 are respectively disposed at the bottoms of the first side cavity 11 and the second side cavity 13, and preferably, the first counterbore 12 and the second counterbore 14 are coaxial with the external gear 1 . The first rotor 2 and the second rotor 3 are respectively provided with four evenly distributed sliders 4 in the circumferential direction, the right side of the first rotor 2 is provided with an extension shaft 21, and the left side of the first rotor 2 is provided with a boss 22 The boss 22 is rotatably mounted in the first counterbore 12, and four sliding grooves 23 are evenly disposed on the circumferential side of the first rotor 2, and the slider 4 is radially slidably mounted in the chute 23. It will be understood by those skilled in the art that the second rotor 3 and the first rotor 2 have the same structure and are provided with an equal number of sliders 4, while the bosses (not shown) of the second rotor 3 are rotatably mounted. In the second counterbore 14 .

As shown in FIG. 2, the extension shaft 21 is connected to an external driving device for driving the rotation of the first rotor 2. As the rotation speed of the first rotor 2 is higher and higher, the centrifugal force received by the slider 4 is also increased. When the rotational speed of the slider 4 reaches a certain threshold (the size of the threshold can be adjusted by a person skilled in the art by changing the size of the slider 4 according to a specific application scenario), the slider 4 is radially pulled out by the centrifugal force. The tip end of the slider 4 is in contact with the inner wall of the first side cavity 11 of the external gear 1, and a frictional force is generated therebetween. As the rotational speed of the first rotor 2 further increases, the frictional force is further increased, so that the first rotor 2 drives the external gear 1 to rotate until the rotational speed of the external gear 1 is equal to or close to the rotational speed of the first rotor 2. Conversely, the friction between the slider 4 and the external gear 1 decreases as the rotational speed of the first rotor 2 decreases. When the rotational speed of the first rotor 2 is lower than the threshold, the slider 4 is disengaged from the first lateral cavity. The inner wall of the 11 is retracted into the chute 23. It will be understood by those skilled in the art that the rotational speed of the first rotor 2 that drives the slider 4 to pull out or retract the chute 23 depends on various factors including, but not limited to, the diameter of the first rotor 2, the slider 4 and The friction between the first rotor 2 and the inertia of the slider 4 and the like.

As shown in FIG. 3, the rotor in the first side cavity 11 and/or the second side cavity 13 may be a plurality of rotors connected in parallel through the sleeve shaft, so that the centrifugal gear assembly can realize more simultaneous input of the driving device. It should be noted that N shown in the figure is a positive integer greater than 3. It will be readily understood by those skilled in the art that in order to facilitate the installation of the rotor, the

side chambers

11, 13 are each provided with a plurality of mutually connected stepped cavities (not shown), and a rotor is further disposed in each of the stepped cavities. Specifically, in Fig. 3, the rotor 1 is connected to the innermost rotating shaft, the rotor 2 is connected to the second set of shafts that are sleeved on the innermost rotating shaft, and the rotor 3 is connected to the second set. The third set of axes on the shaft, and so on. Since the right end of each rotor is connected to a rotating shaft/sleeve shaft, and each rotating shaft/sleeve shaft is connected to a driving device, the structure of Fig. 3 can realize multiple power source inputs on the same side.

As shown in FIG. 4, the rotor in the first side cavity 11 and/or the second side cavity 13 may be a plurality of rotors connected in series by a fixing device, arranged in an axial direction, and connected together to drive a driving device, thereby facilitating the rotor 2. Disassembly and repair of machining and centrifugal gear assemblies. Preferably, the rotors in the

side chambers

11, 13 are all fixed in series to an extension shaft. It should be noted that N shown in the figure is a positive integer greater than 3.

It can be understood by those skilled in the art that the shape of the slider 4 may be any shape such as a block shape, a sheet shape, or the like. Preferably, the top end of the slider 4 contacting the

side cavities

11, 13 is arranged in an arc shape so that the slider 4 is provided. It is better to fit the inner walls of the

side cavities

11, 13 to obtain greater friction.

It can also be understood by those skilled in the art that in order to ensure that the slider 4 can be smoothly retracted into the chute 23, a spring can be disposed between the slider 4 and the

rotors

2, 3, and one end of the spring is fixedly connected with the slider 4, the spring The other end is fixedly coupled to the bottom of the chute 23 to avoid unnecessary wear of the inner walls of the slider 4 and the side cavity 11 when power transmission between the slider 4 and the external gear 1 is not required. Those skilled in the art will also appreciate that the number of springs can be set according to the particular application.

It will also be understood by those skilled in the art that the number of sliders 4 can be increased or decreased according to specific needs (e.g., the magnitude of transmission torque) as long as all of the sliders 4 are uniformly distributed around the central circumference of the first rotor 2.

As shown in Fig. 2, a space is reserved between the

rotors

2, 3 and the inner walls of the

side chambers

11, 13, in order to save material, the

rotors

2, 3 are easily installed, and the heat generated during operation can be dissipated in time with the air flow. At the same time, only a small gap is left between the assembled slider 4 and the inner wall of the

side chambers

11, 13 of the external gear 1, so that the slider 4 can be ejected or retracted in time. Further, in order to ensure that the slider 4 can react quickly and reduce the friction between the slider 4 and the chute 23, a lubricant can be added between the slider 4 and the chute 23.

With continued reference to FIG. 2, a lubricant is added between the boss 22 of the first rotor 2 and the first counterbore 12, and between the boss of the second rotor 3 and the second counterbore 14 to avoid work, two Unnecessary friction between the two causes energy loss, or bearings can be used instead of added lubricant.

It can be understood by those skilled in the art that the diameter and depth of the two

side cavities

11, 13 of the external gear 1 may not be symmetrical in order to meet the simultaneous input of the driving devices of different powers, but it should be noted that the two side cavities A partition is required between the two rotors so that the two rotors do not interfere with each other when rotating. Those skilled in the art can also understand that the shape and size of the left and right sides of the

rotor

2, 3 and the number of the sliders 4 can also be adjusted according to specific needs.

Heretofore, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the drawings, but it is obvious to those skilled in the art that the scope of the present invention is obviously not limited to the specific embodiments. Those skilled in the art can make equivalent changes or substitutions to the related technical features without departing from the principles of the present invention, and the technical solutions after the modifications or replacements fall within the scope of the present invention.

Claims

A multi-drive device input centrifugal gear assembly, characterized in that the centrifugal gear assembly comprises an external gear, the external gear is provided with at least one side cavity, and each of the side chambers is provided with a rotor,

The centrifugal gear assembly further includes at least one slider rotatably disposed on the rotor, the rotor being rotated by a driving device such that when the rotational speed of the rotor reaches a certain threshold, the slider contacts The inner wall of the side cavity, which in turn drives the outer gear to rotate.
A multi-drive device input centrifugal gear assembly according to claim 1, wherein at least one chute is disposed on an outer surface of said rotor, and each of said sliders is slidably mounted at each of said Inside the chute.
A multi-drive input centrifugal gear assembly according to claim 2, wherein one end of said rotor is provided with an extension shaft for connecting said rotor to said drive means.
A multi-drive input centrifugal gear assembly according to claim 3, wherein the inner bottom of the side chamber is provided with a counterbore for radially securing the rotor.
A multi-drive device input centrifugal gear assembly according to claim 4, wherein the other end of the rotor is provided with a boss, and the boss is mounted in the counterbore.
A multi-drive device input centrifugal gear assembly according to any one of claims 1 to 5, wherein the centrifugal gear assembly includes four sliders uniformly disposed on the rotor in a circumferential direction.
A multi-drive device input centrifugal gear assembly according to claim 6, wherein said external gear is provided with two left and right side chambers, one for each of said side chambers.
A multi-drive device input centrifugal gear assembly according to claim 6 wherein said rotor further comprises a spring disposed in said chute, one end of said spring being fixedly coupled to the interior of said chute, The other end of the spring is coupled to the slider, the spring for resetting the slider when the rotational speed of the rotor is less than the threshold.
A multi-drive device input centrifugal gear assembly according to claim 6, wherein each of said side chambers includes at least two stepped chambers that communicate with each other, one of said rotors being disposed in each of said stepped chambers One end of each of the rotors is connected to a sleeve shaft, and each of the sleeve shafts is respectively connected with a driving device to realize multi-power input on the same side.
A multi-drive device input centrifugal gear assembly according to claim 6, wherein each of said side chambers is provided with a plurality of rotors, said plurality of rotors being fixed in series to a projecting shaft and by means of The extension shafts are connected in common to a drive unit.