Outer turntable swing type double-wheel differential driving assembly

Abstract

The invention belongs to the technical field of driving wheels, and particularly relates to an outer turntable swing type double-wheel differential driving assembly, which comprises a driving component, a driving wheel and a motor for controlling the driving wheel to walk, the box body is provided with the driving wheel and the motor; when the motor controls the driving wheels to walk, the box body synchronously moves along with the driving wheels; the fixing plate is mounted at the top of the box body and is used for directly or indirectly bearing objects; the bottom plate is provided with a notch allowing the driving wheel, the box body and the motor to penetrate through, the inner side of the top of the bottom plate is connected with the fixing plate through a swing assembly, a slewing bearing is installed on the outer side of the top of the bottom plate and matched with an encoder, an inner gear ring of the slewing bearing is meshed with an encoder gear, and the inner gear ring of the slewing bearing is meshed with the encoder gear. The encoder synchronously moves along with the base and the slewing bearing; the height is low and is not larger than the wheel diameter, the bearing capacity is large, the angle sensor does not swing when the device is driven to swing along with the ground, a cable is led out from the middle, and the cable is not wound.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of driving wheels, and particularly relates to an outer rotating disc swing type double-wheel differential drive assembly. BACKGROUND

[0002] In some platform products for loading, driving wheels are needed to realize multi-directional travel and braking of the platform. With the continuous development of the loading platform, more and more requirements are put forward for the driving wheels, such as height, whether to be wound, etc. In actual use, the heights on the ground physical layer are different, and in the working process, the angle sensor will appear measurement deviation. SUMMARY

[0003] To solve the problems in the background art, the application provides an outer rotating disc swing type double-wheel differential drive assembly.

[0004] To achieve the above object, the application provides the following technical scheme. An outer rotating disc swing type double-wheel differential drive assembly comprises a driving assembly composed of driving wheels and an electric machine for controlling the travel of the driving wheels; a box body in which the driving wheels and the electric machine are installed; when the electric machine controls the travel of the driving wheels, the box body moves synchronously with the driving wheels; A fixed plate is installed on the top of the box body and is used for directly or indirectly bearing objects; A bottom plate is provided with a slot through which the driving wheels, the box body and the electric machine pass, the inner side of the top of the bottom plate is connected with the fixed plate through a swing assembly, a slewing bearing is installed on the outer side of the top of the bottom plate, the slewing bearing is matched with an encoder, the inner ring gear of the slewing bearing is engaged with the gear of the encoder, and the encoder moves synchronously with the base and the slewing bearing; The driving wheels are provided with two and are separately matched with the electric machines for separate control to realize differential drive.

[0005] As one of the technical schemes of the application, the box body comprises a first connecting plate and a second connecting plate, and the first connecting plate and the second connecting plate are both provided with an installation slot structure for installing the driving wheels and the electric machines.

[0006] As one of the technical schemes of the application, the bottom of the box body is provided with a pull rod, and the two ends of the pull rod are connected with the first connecting plate and the second connecting plate respectively.

[0007] As one of the technical schemes of the application, the swing assembly comprises a support and an ear rotatably connected with the support, the top of the support is connected with the fixed plate, and the bottom of the ear is connected with the bottom plate.

[0008] As a technical scheme of the present application, the support is inverted triangular structure, and a through slot is arranged in the middle of the vertical surface, a through hole is arranged in the middle of the horizontal surface, the top of the lug is provided with a first protrusion, the horizontal side is provided with a second protrusion, and the bottom is provided with a third protrusion, the first protrusion is connected with the fixed plate through the through slot, the second protrusion is embedded in the through hole, and the third protrusion is embedded in the bottom plate.

[0009] As a technical scheme of the present application, the driving wheel comprises an internal hollow walking wheel, a gear ring, a planetary wheel, a sun gear and a planetary wheel mounting seat installed in the hollow part of the walking wheel, the planetary wheel is embedded in the planetary wheel mounting seat, the planetary wheel mounting seat is arranged in the gear ring, the outer teeth of the planetary wheel are engaged with the teeth of the gear ring, the planetary wheel mounting seat and the walking wheel are connected through bolts, the sun gear is used for driving the planetary wheel to rotate, the sun gear is driven by a second transmission gear, the second transmission gear is driven by a first transmission gear, the second transmission gear and the first transmission gear are embedded in the box body, and the first transmission gear is driven by the motor.

[0010] As a technical scheme of the present application, the top of the fixed plate is provided with a slot structure that can be wired.

[0011] Compared with the prior art, the present application has the following beneficial effects: The height is low, the height is not greater than the wheel diameter, the bearing capacity is large, the angle sensor does not swing when the driving is swung with the ground, the cable is out in the middle, and the cable is not wound. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a whole explosion structure schematic diagram of the present application; Figure 2 It is a whole structure one perspective schematic diagram of the present application; Figure 3 It is another perspective schematic diagram of the whole structure of the present application; Figure 4 It is a swing assembly structure schematic diagram in the present application; Figure 5 It is a driving assembly explosion structure schematic diagram of the present application Figure 1 ; Figure 6 It is a driving assembly explosion structure schematic diagram of the present application Figure 2 . DETAILED DESCRIPTION

[0013] Clearly, the described embodiments are only some, but not all implementations of the present application. Based on the embodiments in the present application, persons having ordinary skill in the art can obtain all other embodiments within the scope of the present application without creative efforts, and the embodiments obtained by the persons having ordinary skill in the art should fall within the scope of the present application.

[0014] As shown in the present application and claims, unless the context clearly indicates otherwise, the words "one", "an", "a", and / or "the" do not mean "only one", but can include a plurality or "one or more" unless the context clearly indicates otherwise. Generally, the terms "comprising" and "including" merely indicate the inclusion of the recited elements, and do not exclude other elements, steps, and elements.

[0015] Unless otherwise specifically explained, the relative arrangement of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application. It should be understood that the dimensions of the various parts shown in the drawings are not necessarily to scale, for the sake of convenience in description. The techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the authorized description. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of the exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0016] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal", and "top, bottom" indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Without the opposite indication, these orientation words do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component.

[0017] For purposes of the description hereinafter, spatial relative terms, such as "above", "below", "top", "bottom", "upper", "lower", and the like, can be used to describe the disclosed devices and / or features as oriented in the drawings. It will be understood that the spatially relative terms are intended to encompass different orientations of the devices in use or operation in addition to the orientations depicted in the drawings. For example, if a device described as above other devices or structures is inverted, or oriented differently, then the above device can be oriented below or below the other devices or structures. Thus, the exemplary term "above" can encompass both an orientation of above and below. The devices can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. The devices can be oriented in any direction and terms such as "upper" and "lower" can be interpreted accordingly.

[0018] In addition, it should be pointed out that the use of the terms "first", "second" and the like, to describe various elements, is only intended to distinguish the elements from each other, and does not have a special meaning unless otherwise stated. Therefore, it cannot be understood as a limitation on the scope of protection of the present application. In addition, although the terms used in the present application are selected from well-known and commonly used terms, some terms mentioned in the specification of the present application can be selected by the applicant according to his or her judgment, and the detailed meanings thereof are described in the relevant part of the description. In addition, the present application is required to be understood not only by the actual terms used, but also by the meaning implied by each term.

[0019] Reference Figures 1-6 A swing type double-wheel differential drive assembly of an outer rotating disc, comprising: A drive assembly, which is composed of a drive wheel and a motor 38 for controlling the movement of the drive wheel; the drive wheel is provided with two and is used separately with the motor to realize differential drive. Figure 1 As can be seen, one motor controls one drive wheel, and the installation mode of the motor is compact and does not occupy too much space.

[0020] A box body 4, which is provided with the drive wheel and the motor; when the motor controls the movement of the drive wheel, the box body moves synchronously with the drive wheel.

[0021] In one embodiment, the box body 4 comprises a first connecting plate and a second connecting plate, both of which are provided with an installation groove structure 41 for installing the drive wheel and the motor, and the bottom of the box body is provided with a pull rod 6, both ends of which are connected with the first connecting plate and the second connecting plate. It should be noted that the first connecting plate and the second connecting plate are not marked in the figure, but it can be clearly seen that in this embodiment, the first connecting plate and the second connecting plate are both composed of a rectangular plate.

[0022] The fixed plate 1 is installed on the top of the box body and is used to directly or indirectly bear the objects; from Figure 2 It can be seen that the height is not greater than the wheel diameter. The top of the fixed plate is provided with a slot structure for wiring, which is used to pass the cable and not to wind the cable.

[0023] The bottom plate 5 is provided with a slot for the driving wheel, the box body and the motor to pass through, the inner side of the top of the bottom plate is connected with the fixed plate 1 through a swing assembly, the outer side of the top of the bottom plate is installed with a slewing bearing 2, the slewing bearing is matched with an encoder 9 (angle sensor), the inner ring gear of the slewing bearing is engaged with the encoder gear, and the encoder moves synchronously with the base and the slewing bearing. The encoder 9 can be fixed at the fixed end of the bottom plate 5.

[0024] Referring to Figure 4 In an embodiment, the swing assembly includes a support 7 and an ear 8 rotationally connected with the support, the top of the support is connected with the fixed plate, and the bottom of the ear is connected with the bottom plate. Specifically, the support is in a reverse triangular structure, a through groove 71 is arranged at the middle position of the vertical surface, a through hole 72 is arranged at the middle position of the horizontal surface, a first protrusion 81 is arranged at the top of the ear, a second protrusion 82 is arranged at the horizontal side of the ear, and a third protrusion is arranged at the bottom of the ear, the first protrusion passes through the through groove and is connected with the fixed plate, the second protrusion is embedded in the through hole, and the third protrusion is embedded in the bottom plate. The bottom plate and the ear are fixed through bolts.

[0025] When the driving wheel swings with the ground during driving, the slewing bearing 2 does not swing (relative motion state) through the swing assembly.

[0026] Referring to Figure 5 、 Figure 6 In an embodiment, the driving wheel includes an internal hollow walking wheel 31 and a gear ring 32, a planetary gear 35, a sun gear 34 and a planetary gear mounting seat 33 installed in the hollow part of the walking wheel, the planetary gear is embedded in the planetary gear mounting seat, the planetary gear mounting seat is arranged in the gear ring, the outer teeth of the planetary gear are engaged with the teeth of the gear ring, the planetary gear mounting seat and the walking wheel are connected through bolts, the sun gear is used to drive the planetary gear to rotate, the sun gear is driven by a second transmission gear 36, the second transmission gear is driven by a first transmission gear 37, the second transmission gear and the first transmission gear are embedded in the mounting slot structure 41 arranged in the box body, and the first transmission gear is driven by a motor 38.

[0027] When the starting motor 38 is started, the first transmission gear 37 installed on the output end of the motor works to drive the second transmission gear 36 engaged with the first transmission gear 37 to rotate, thereby driving the sun gear 34 to rotate, which drives the planetary gears 35 engaged with the sun gear 34 to rotate on the planetary gear mounting seat 33, and the planetary gears 35 are engaged with the teeth of the ring gear 32 to make the planetary gears 35 run on the ring gear 32, thereby controlling the rotation of the running wheels.

[0028] It should be noted that, as can be seen from Figure 5 the tail end of the planetary gear mounting seat 33 and the ring gear are installed with bearings, and the sun gear and the second transmission gear are also provided with bearings, which are not marked in the figure.

[0029] Although the embodiments of the present application have been shown and described, it should be understood by those ordinary skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An outer turntable oscillating dual wheel differential drive assembly characterized by, The utility model relates to a kind of movable box and driving device, including: Drive assembly is by drive wheel and the motor that control the drive wheel walking is formed;Box is mounted with the drive wheel and motor;When motor controls the drive wheel walking, the box follows drive wheel synchronous movement; Fixed plate, installed on the top of the box, is used to directly or indirectly bear the article; Bottom plate is provided with the slot for the drive wheel, box and motor, the inner side of the top of the bottom plate is connected with the fixed plate by swing assembly, the outer side of the top of the bottom plate is installed with slewing bearing, the slewing bearing is matched with encoder, the inner ring gear of the slewing bearing is engaged with encoder gear, and the encoder moves synchronously with base and slewing bearing; The drive wheel is provided with two and is matched with motor separately controlled to be used to realize differential drive.

2. An outer rotating disc oscillating differential drive assembly according to claim 1, wherein, The box includes first connecting plate and second connecting plate, and the first connecting plate and the second connecting plate are provided with mounting groove structure for mounting the drive wheel and the motor.

3. An outer rotating disc oscillating differential drive assembly according to claim 2, wherein, The bottom of the box is provided with a pull rod, and the two ends of the pull rod are connected with the first connecting plate and the second connecting plate respectively.

4. An outer rotating disc oscillating differential drive assembly according to claim 1, wherein, The swing assembly includes a support and an ear connected with the support, the top of the support is connected with the fixed plate, and the bottom of the ear is connected with the bottom plate.

5. An outer rotating disc oscillating differential drive assembly according to claim 4, wherein, The support is inverted triangular structure, and the middle position of vertical surface is provided with through groove, and the middle position of horizontal surface is provided with through hole, the top of the ear is provided with first lug, the horizontal side is provided with second lug, and the bottom is provided with third lug, the first lug passes through the through groove and is connected with the fixed plate, the second lug is embedded in the through hole, and the third lug is embedded in the bottom plate.

6. An outer rotating disc wobble type two-wheel differential drive assembly according to claim 1, characterized in that, The drive wheel includes an internally hollow walking wheel, a gear ring, a planetary gear, a sun gear and a planetary gear mounting seat installed in the hollow part of the walking wheel, the planetary gear is embedded in the planetary gear mounting seat, the planetary gear mounting seat is arranged in the gear ring, the outer teeth of the planetary gear are engaged with the teeth of the gear ring, the planetary gear mounting seat and the walking wheel are connected by bolts, the sun gear is used to drive the planetary gear to rotate, the sun gear is driven by a second transmission gear, the second transmission gear is driven by a first transmission gear, the second transmission gear and the first transmission gear are embedded in the box, and the first transmission gear is driven by the motor.

7. An outer rotating disc wobble type two-wheel differential drive assembly according to claim 1, characterized in that, The top of the fixed plate is provided with a slot structure that can be wired.

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