CN221292810U - Driving assembly and agricultural mechanical equipment - Google Patents

Abstract

The application relates to the technical field of mechanical automation, and discloses a driving assembly and agricultural mechanical equipment, wherein the driving assembly comprises: the device comprises a bracket, a driving piece, a transmission mechanism and travelling wheels; the bracket is used for being connected to the mechanical equipment body; the driving piece is fixed on the bracket; the transmission mechanism comprises a speed reducer, the speed reducer is fixed on the bracket, at least part of the speed reducer is accommodated in the wheel hub of the travelling wheel, and the output end of the speed reducer is fixedly connected with the wheel hub; the transmission mechanism further comprises a driving end and a driven end, the transmission mechanism is fixedly arranged in the bracket, the driving end of the transmission mechanism is connected with the driving piece, and the driven end of the transmission mechanism is connected with the input end of the speed reducer; the driving piece is used for driving the travelling wheel to rotate through the transmission mechanism so as to drive the mechanical equipment body connected to the bracket to walk. Through the mode, the application can reduce the volume of the driving assembly, so that the structure is more compact, meanwhile, damage to plants during operation in an agricultural scene can be avoided, and the operation efficiency is improved.

Description

Driving assembly and agricultural mechanical equipment

Technical Field

The application relates to the technical field of mechanical automation, in particular to a driving assembly and agricultural mechanical equipment.

Background

With the rapid development of automated mechanical devices, the demands on the miniaturization of the devices are increasing, which also makes the demands on the volume of the drive systems in the devices smaller and smaller. The research of the driving system at the present stage is mainly focused on the field of new energy automobiles, and for the agricultural field, as the agricultural mechanical equipment has larger load and more complex and severe movement working conditions, the driving system is more difficult to meet the requirements of volume reduction and compact structure.

The transmission mode of the driving system in the prior art adopts the driving piece to drive the travelling wheel to rotate, but because the driving system is large in size and dispersed in structure, when the agricultural mechanical equipment walks in the farmland, the driving part is easy to be interfered with the plant in a winding manner, the condition of crushing or scraping the plant occurs, the working efficiency is reduced, and irreversible damage is caused to agricultural production.

Disclosure of utility model

In view of the above problems, embodiments of the present application provide a driving assembly and an agricultural machine device, which can reduce the volume of the driving assembly, make the structure more compact, meet the miniaturization requirement of the driving assembly on the device, and simultaneously can avoid damage to plants during operation in an agricultural scene, and improve the operation efficiency.

According to an aspect of an embodiment of the present application, there is provided a driving assembly including: the device comprises a bracket, a driving piece, a transmission mechanism and travelling wheels; the bracket is used for being connected to the mechanical equipment body; the driving piece is fixed on the bracket; the transmission mechanism comprises a speed reducer, the speed reducer is fixed on the bracket, at least part of the speed reducer is accommodated in the wheel hub of the travelling wheel, and the output end of the speed reducer is fixedly connected with the wheel hub; the transmission mechanism further comprises a driving end and a driven end, the transmission mechanism is fixedly arranged in the bracket, the driving end of the transmission mechanism is connected with the driving piece, and the driven end of the transmission mechanism is connected with the input end of the speed reducer; the driving piece is used for driving the travelling wheel to rotate through the transmission mechanism so as to drive the mechanical equipment body connected to the bracket to walk.

In an alternative mode, the driving assembly further comprises a mounting frame, the mounting frame is fixed on the support and covers the periphery of the speed reducer, the speed reducer is fixed on the mounting frame, and at least part of the mounting frame is accommodated in the hub; the mounting frame is provided with a connecting port for the output end of the speed reducer to pass through.

In an alternative mode, the mounting frame comprises a first frame body and a second frame body, the first frame body is in a cylinder shape with two open ends, one end of the first frame body is fixed on the bracket, and the other end of the first frame body is used for the speed reducer to extend in, so that at least part of the speed reducer is accommodated in the first frame body; the second support body can be dismantled and be fixed in the one end that first support body deviates from the support to cover the part that exposes in first support body one end that deviates from the support on the reduction gear, the connector sets up on the second support body.

In an alternative form, the drive assembly further comprises a slewing bearing comprising a slewing bearing inner race and a slewing bearing outer race; the hub is provided with a switching disc; the output end of the speed reducer is fixedly connected with the switching disc through the slewing bearing inner ring, and the slewing bearing outer ring is fixedly connected with the mounting frame.

In an alternative, the output end of the reducer is provided with an extension; the adapter plate comprises a connecting part at the center of the adapter plate; the extension part passes through the slewing bearing inner ring and is fixedly connected with the connecting part at the center of the switching disc.

In an alternative mode, the driving end of the transmission mechanism is provided with a driving wheel, and the driven end is provided with a driven wheel; the driving wheel is connected with an output shaft of the driving piece, the driving wheel is in transmission connection with the driven wheel, and the driven wheel is connected with an input end of the speed reducer.

In an alternative, the drive member and the road wheel are disposed on the same side of the support.

In an alternative, a brake is connected between the output shaft of the driver and the drive wheel.

In an alternative mode, the driving wheel and the driven wheel are belt wheels, and the driving wheel and the driven wheel are in transmission connection through a transmission belt.

In an alternative mode, a tensioning device is arranged in the bracket and is abutted on the driving belt, so that the driving belt is prevented from loosening and falling off.

In an alternative mode, a notch for installing the transmission mechanism is formed in the support, the notch faces to one side deviating from the travelling wheel, and a cover plate is arranged on the support and used for covering the notch.

In an alternative mode, the driving assembly further comprises a protective shell, wherein the protective shell covers the periphery of the driving piece and is fixedly connected with the bracket.

According to another aspect of the embodiment of the application, there is provided an agricultural machine, including an apparatus body and a driving assembly in any one of the above, where the driving assembly is disposed on the apparatus body and is used to drive the apparatus body to walk.

According to the driving assembly provided by the embodiment of the application, the transmission mechanism is fixedly arranged in the bracket, and the speed reducer is at least partially accommodated in the hub, so that the structure is more compact, and compared with a mode that the speed reducer is arranged between the driving piece and the driving end, the occupation of the whole space of the driving assembly is greatly reduced, meanwhile, the assembly connection between the input end of the speed reducer and the driving piece and between the output end of the speed reducer and the hub is not influenced, and the reliability of driving the travelling wheel is ensured. In addition, when the drive assembly is applied to the agricultural mechanical equipment field, on the one hand, because the volume is less, be difficult for taking place to interfere the problem with the plant, on the other hand, because the periphery of support cladding drive mechanism, wheel hub shroud in the periphery of the output department of reduction gear at least, consequently can ensure that the work of drive mechanism and the output of reduction gear is rotated the time be difficult for taking place the winding problem with the plant, ensure high-efficient operation.

The foregoing description is only an overview of the present application, and is intended to be implemented in accordance with the teachings of the present application in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present application more readily apparent.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

fig. 1 is a schematic perspective view of a driving assembly according to an embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view of a drive assembly according to an embodiment of the present utility model;

fig. 3 is a schematic front view of an agricultural machine according to an embodiment of the present utility model.

Reference numerals in the specific embodiments are as follows:

100. A drive assembly;

110. a bracket; 111. a first plate body; 112. a second plate body; 113. a mounting groove; 1131. a notch; 114. a cover plate;

120. A driving member;

130. A transmission mechanism; 131. a speed reducer; 131a, an input; 131b, an output; 131c, an extension; 131d, an intermediate connection; 132. a driving wheel; 133. driven wheel; 134. a transmission belt; 135. a tensioning device;

140. A walking wheel; 141. a hub; 1411. a switching disc; 1412. a connection part;

150. a mounting frame; 151. a connection port; 152. a first frame body; 153. a second frame body;

161. A first threaded fastener; 162. a second threaded fastener;

170. A slewing bearing; 171. a slewing bearing outer ring; 172. a slewing bearing inner ring;

180. A protective shell;

500. agricultural machinery equipment; 200. an apparatus body.

Detailed Description

Embodiments of the technical scheme of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present application, and thus are merely examples, and are not intended to limit the scope of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description of the application and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion.

In the description of embodiments of the present application, the technical terms "first," "second," and the like are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: there are three cases, a, B, a and B simultaneously. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" means two or more (including two), and similarly, "plural sets" means two or more (including two), and "plural sheets" means two or more (including two).

In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.

The output end of a driving piece in the existing mechanical equipment driving assembly is connected with the travelling wheels through a speed reducer and a transmission mechanism in sequence, and torque output by the driving piece is transmitted to the travelling wheels after being reduced in speed and increased in torque through the speed reducer and the transmission mechanism, so that automatic travelling driving of mechanical equipment is realized. Because the mode that the driving piece is connected with the transmission mechanism after being connected with the speed reducer occupies a larger space, the whole volume of the driving assembly is larger. For agricultural machinery, the large volume can cause the problems of easy interference and winding of the driving component and plants during operation, and the operation efficiency is reduced.

In this regard, in order to achieve a compact design of the drive unit, improvement can be made from the viewpoints of reduction in the number of parts and improvement in the connection compactness, but the manner of reduction in the number of parts necessarily affects the reliability of transmission, and based on this, how to improve the compactness of the connection of parts becomes a difficulty in achieving the miniaturization of the drive unit.

Through researches and practices, the inventor improves the connection mode of the driving assembly, specifically, the speed reducer is arranged between the output end of the transmission mechanism and the wheel hub of the travelling wheel, the wheel hub of the travelling wheel is designed to be of a structure with a cavity, the outer side of the circumferential direction of the wheel hub provides support for the tire, the speed reducer is at least partially accommodated in the wheel hub of the travelling wheel, the output end of the speed reducer is fixedly connected with the wheel hub, reliable transmission is realized, meanwhile, the compactness of the driving assembly is improved, and the miniaturization requirement of the driving assembly is met. Meanwhile, on the basis of reducing the whole volume of the driving assembly, the wheel hub of the travelling wheel can also shield the output end of the speed reducer, so that the driving assembly is not easy to be wound and interfered with a plant when working in an agricultural environment, the plant cannot be crushed or scraped, and the working efficiency can be effectively improved.

The driving assembly provided by the embodiment of the application comprises, but is not limited to, a walking drive used in the fields of agricultural mechanical equipment, industrial mechanical equipment, robots and the like.

Referring specifically to fig. 1 and 2, fig. 1 shows a perspective structure of a driving assembly according to an embodiment of the present application, and fig. 2 shows a cross-sectional structure of the driving assembly. As shown, the drive assembly 100 includes a bracket 110, a driver 120, a transmission 130, and a road wheel 140. The bracket 110 is used for being connected to a machine body (not shown), and the driving member 120 is fixed to the bracket 110. The transmission mechanism 130 comprises a speed reducer 131, the speed reducer 131 is fixed on the bracket 110, at least part of the speed reducer 131 is accommodated in a hub 141 of the travelling wheel 140, and an output end 131b of the speed reducer 131 is fixedly connected with the hub 141. The transmission mechanism 130 further includes a driving end (for example, may be a driving wheel 132 shown in fig. 1) and a driven wheel (for example, may be a driven wheel 133 shown in fig. 1), the transmission mechanism 130 is fixedly disposed in the bracket 110, the driving end of the transmission mechanism 130 is connected to the driving member 120, and the driven end of the transmission mechanism 130 is connected to the input end 131a of the reducer 131. The driving piece 120 is used for driving the travelling wheel 140 to rotate through the transmission mechanism 130 so as to drive the mechanical device body connected to the bracket 110 to walk.

The support 110 is generally made of a metal material with higher strength, so as to ensure the reliability of supporting the equipment body of the farm machinery equipment, and the shape and structure of the support 110 can be correspondingly designed according to actual requirements. Further, for the mechanical device to be steered, in an alternative manner, the support 110 may be rotatably connected to the device body along a vertical axis, so that the steering of the travelling wheel 140 is achieved along with the rotation of the support 110, in an alternative manner, the support 110 may also be fixedly connected to the device body, and the device body is provided with at least two driving assemblies 100 on the front side, and the steering of the device body may also be achieved by the rotation speed difference of the travelling wheel 140 on the two driving assemblies 100. For the mechanical device that does not need to be turned, the bracket 110 is directly and fixedly connected with the device body.

In the embodiment shown in fig. 1, the bracket 110 is in a 7 shape, and has a first plate 111 and a second plate 112 that are perpendicular to each other, where the first plate 111 is used to connect with and support a mechanical device body, and the driving member 120 and the transmission mechanism 130 are disposed on the second plate 112.

The driving member 120 may employ a motor, an engine, etc. With the rapid development of the new energy industry, the environmental protection concept has been in deep focus, and most of the driving modes of the agricultural equipment at the present stage adopt oil movement, so environmental pollution is easily caused, and in this regard, the driving member 120 provided in the embodiment of the present application preferably adopts a motor so as to conform to the environmental protection concept.

As shown in fig. 2, the hub 141 of the travelling wheel 140 may be configured as a U-shaped groove structure, the notch of the groove is towards one side of the support 110, and after the reducer 131 at least partially extends into the hub 141, the output end 131b may be fixedly connected with the bottom of the groove or the inner side wall of the groove formed by the hub 141, so as to realize the transmission of torque from the driving member 120 to the hub 141, and ensure the normal driving of the travelling wheel 140.

In other embodiments, the hub 141 of the travelling wheel 140 may be configured as a shell, the reducer 131 may be completely accommodated in the hub 141, and the output shaft of the driving member 120 is connected to the input end 131a of the reducer 131 by penetrating into the hub 141, or the input end 131a of the reducer 131 is connected to the output shaft of the driving member 120 by penetrating out of the hub 141.

According to the driving assembly 100 provided by the embodiment of the application, the transmission mechanism 130 is fixedly arranged in the bracket 110, and the speed reducer 131 is at least partially accommodated in the hub 141, so that the structure is more compact, compared with the mode that the speed reducer 131 is arranged between the driving piece 120 and the driving end, the occupation of the whole space of the driving assembly 100 is greatly reduced, meanwhile, the assembly connection between the input end 131a of the speed reducer 131 and the driving piece 120 and between the output end 131b and the hub 141 is not influenced, and the reliability of driving the travelling wheel 140 is ensured.

In addition, when the driving assembly 100 is applied to the field of agricultural machinery, on one hand, the problem of interference with plants is not easy to occur due to the small size, and on the other hand, the hub 141 covers at least the periphery of the output end 131b of the speed reducer 131 due to the fact that the bracket 110 covers the periphery of the transmission mechanism 130, so that the problem of winding with plants is not easy to occur when the transmission mechanism 130 and the output end 131b of the speed reducer 131 rotate during working, and efficient operation is ensured.

In order to ensure structural stability of the reducer, the present application further proposes an embodiment, and with continued reference to fig. 2, as shown in the drawings, the driving assembly 100 further includes a mounting frame 150, the mounting frame 150 is fixed to the bracket 110 and covers the outer periphery of the reducer 131, the reducer 131 is fixed to the mounting frame 150, and at least a portion of the mounting frame 150 is accommodated in the hub 141. The mounting bracket 150 is provided with a connection port 151 through which the output end 131b of the decelerator 131 passes.

Specifically, in the embodiment shown in fig. 2, the mounting frame 150 is configured in a cage structure to cover the speed reducer 131 therein, the mounting frame 150 is detachably fixed to the bracket 110 by a threaded fastener, and the housing of the speed reducer 131 is also detachably fixed to the mounting frame 150 by a threaded fastener. It should be understood that the assembly manners of the bracket 110, the mounting frame 150 and the reducer 131 shown in fig. 2 are merely exemplary illustrations provided in the embodiments of the present application, and the shapes, structures and assembly manners of the components shown in the drawings are not limited to the present application, and may be specifically set up according to the needs and are not repeated herein.

Further, the mounting frame 150 may be an integral structure, or may be a split type formed by assembling a plurality of sub-frames, and when a plurality of sub-frames are adopted, the plurality of sub-frames may be multiple segments split along the axial direction of the reducer 131 (the opposite direction between the input end and the output end of the reducer), and the plurality of sub-frames are sequentially connected first to form the mounting frame 150; the plurality of sub-frames may be a plurality of sub-frames split along the circumferential direction of the speed reducer 131, and the plurality of sub-frames are buckled together to form the mounting frame 150.

The manner in which the speed reducer 131 is indirectly fixed to the bracket 110 through the mounting frame 150 can improve the stability of the structure of the speed reducer 131 compared to the manner in which the speed reducer 131 is directly fixed to the bracket 110. Specifically, if the reducer 131 is directly fixedly connected to the bracket 110, the reducer 131 can only be connected to the bracket 110 by a housing at the input end 131a thereof, which results in the integral formation of the reducer 131 into a cantilever-like structure on the bracket 110, and under the action of gravity, the integral stress distribution of the reducer 131 is uneven, and further, after vibration occurs during operation, the stress distribution is further increased, thereby causing damage, falling off and other risks of the reducer 131. And adopt mounting bracket 150 one end to be fixed in support 110, and mounting bracket 150 shroud behind reduction gear 131 periphery, the casing of reduction gear 131 can be in optional position and mounting bracket 150 fixed connection, although still form the cantilever structure after mounting bracket 150 is connected on support 110, but mounting bracket 150 self weight is far below reduction gear 131, consequently the structural stability of mounting bracket 150 can be ensured, with reduction gear 131 being connected with mounting bracket 150 in suitable fixed position after, can alleviate the overall structure's that mounting bracket 150 and reduction gear 131 formed stress distribution unevenness.

In addition, the connection of the bracket 110, the mounting frame 150 and the speed reducer 131 can generate vibration in the working process, the vibration is caused by the operation of the transmission mechanism inside the speed reducer 131, if the speed reducer 131 is directly assembled and fixed on the bracket 110, the vibration intensity between the speed reducer 131 and the transmission mechanism is higher, the speed reducer 131 is fixed on the mounting frame 150, and then the mounting frame 150 is fixed on the bracket 110, so that the vibration is firstly transmitted to the connection part of the speed reducer 131 and the mounting frame 150 and then to the connection part of the mounting frame 150 and the bracket 110, and the intensity of the vibration generated at the connection part of the mounting frame 150 and the bracket 110 is effectively reduced, thereby ensuring the stability of the integral structure of the speed reducer 131 and the mounting frame 150.

Meanwhile, as can be seen in conjunction with fig. 2, after the mounting frame 150 is fixedly connected with the bracket 110 and covers the periphery of the speed reducer 131, the connection part between the output shaft of the driving member 120 and the input end 131a of the speed reducer 131 can be shielded and protected, and meanwhile, after the mounting frame 150 is at least partially accommodated in the hub 141, the connection between the output end 131b of the speed reducer 131 and the hub 141 can be shielded and protected by the mounting frame 150 and the hub 141 together, so that when the driving assembly 100 is applied to the field of agricultural mechanical equipment, the interference and winding problem with plants during the rotation movement of a transmission part can be effectively avoided.

In order to facilitate disassembly and maintenance of the speed reducer, the application further provides an embodiment, and as shown in fig. 2, the mounting rack 150 includes a first rack body 152 and a second rack body 153, wherein the first rack body 152 has a cylindrical shape with two open ends, one end of the first rack body 152 is fixed on the bracket 110, and the other end of the first rack body 152 is used for the speed reducer 131 to extend into, so that at least part of the speed reducer 131 is accommodated in the first rack body 152. The second frame 153 is detachably fixed to an end of the first frame 152 facing away from the bracket 110, and covers a portion of the reducer 131 exposed at the end of the first frame 152 facing away from the bracket 110, and the connection port 151 is disposed on the second frame 153.

Specifically, during assembly, the first frame 152 may be first mounted and fixed on the bracket 110, then the reducer 131 is installed from an opening at one end of the first frame 152 facing away from the bracket 110, so as to realize pre-positioning of the reducer 131, so as to facilitate assembly between the input end 131a of the reducer 131 and the output shaft of the driving member 120, and then the second frame 153 may be mounted and fixed at one end of the first frame 152 facing away from the bracket 110 and cover the reducer 131, and then the output end 131b of the reducer 131 and the hub 141 are assembled. When the speed reducer 131 needs to be disassembled for maintenance or replacement, the above steps are reversed, and the first frame 152 does not need to be disassembled.

In the embodiment shown in fig. 2, in the manner of connection between the speed reducer 131 and the mounting frame 150, the housing of the speed reducer 131 is fixedly connected with the first frame 152 at the end of the first frame 152 facing away from the bracket 110 by the first threaded fastener 161, and the screwing direction of the first threaded fastener 161 is parallel to the axial direction of the speed reducer 131, so that the operation is more convenient when the speed reducer 131 and the first frame 152 are assembled. For the connection between the second frame body 153 and the first frame body 152, the second threaded fastener 162 is assembled and fixed on the outer side of the first threaded fastener 161 in the same manner, the screwing direction of the second threaded fastener 162 is also parallel to the axial direction of the speed reducer 131, so that the screwing operation is convenient, and the screwing direction of the second threaded fastener 162 may be opposite to the screwing direction of the first threaded fastener 161 as shown in fig. 2, which may be the same, but is not limited thereto.

In order to ensure the normal operation of the travelling wheel 140 on the basis of improving the compactness of the driving assembly, the present application further proposes an embodiment, and with reference to fig. 2, the second frame 153 is fully received in the hub 141, and the first frame 152 is partially received in the hub 141. The second frame 153 is fully accommodated in the hub 141, so that the volume of the driving assembly 100 can be reduced more, and the first frame 152 is partially accommodated in the hub 141, so that the gap between the travelling wheel 140 and the bracket 110 can be formed on the periphery of the first frame 152 outside the hub 141, and the normal rotation of the travelling wheel 140 can be ensured, and the phenomenon that foreign matters are blocked between the travelling wheel 140 and the bracket 110 to influence the running efficiency and stability of the travelling wheel 140 when the travelling wheel 140 is too close to the bracket 110 can be avoided.

In order to improve the driving and reliability of the travelling wheel 140, the present application proposes an embodiment, and as shown in fig. 2, the driving assembly 100 further includes a slewing bearing 170, the slewing bearing 170 includes a slewing bearing outer ring 171 and a slewing bearing inner ring 172, a hub 141 is provided with a switching disc 1411, an output end 131b of the reducer 131 is fixedly connected with the switching disc 1411 through the slewing bearing inner ring 172, and the slewing bearing outer ring 171 is fixedly connected with the mounting frame 150.

In the embodiment shown in fig. 2, the output end 131b of the speed reducer 131 is a disc-type output shaft, which is fixedly connected to the inner side of the slewing bearing inner ring 172 at a plurality of points along the circumferential direction, and the outer side of the slewing bearing inner ring 172 is fixedly connected to the adaptor disc 1411 at a plurality of points along the circumferential direction, so that the reliability of torque transmission from the output end 131b of the speed reducer 131 to the adaptor disc 1411 on the hub 141 can be ensured.

In order to further improve the reliability of driving, the present application further proposes an embodiment, and as shown in fig. 2, the output end 131b of the reducer 131 is provided with an extension portion 131c, the adaptor plate 1411 includes a connecting portion 1412 at the center of the adaptor plate 1411, and the extension portion 131c passes through the slewing bearing inner ring 172 and is fixedly connected with the connecting portion 1412 at the center of the adaptor plate 1411.

In the embodiment shown in fig. 2, an intermediate connecting piece 131d is further disposed on the output end 131b of the speed reducer 131, the intermediate connecting piece 131d has a disc structure, one end surface of the disc structure is fixed on the output end 131b of the speed reducer 131, the other end surface of the disc structure forms an extending portion 131c, and the disc structure and the extending portion 131c are integrally formed to ensure structural strength, and an end portion of the extending portion 131c is fixedly connected with a connecting portion 1412 at the center of the adapter disc 1411, so that reliable driving of the travelling wheel 140 is achieved through torque transmission at the center and the inner periphery of the adapter disc 1411.

It should be noted that fig. 2 is only an exemplary illustration provided in the embodiment of the present application, in which the shape and the structure of the output end 131b of the reducer 131 are not limited to the protection scope of the present application, for example, in other embodiments, the output end 131b of the reducer 131 may be an output shaft, a flange may be sleeved on the output shaft, and the portion of the output shaft passing through the flange forms the extending portion 131c fixedly connected to the connecting portion at the center of the adapter disc 1411, where the flange is fixedly connected to the slewing bearing inner ring 172.

In order to achieve a flexible arrangement of the driving element positions, the application proposes an embodiment, with particular reference to fig. 1 and 2. As shown in the figure, the driving end of the transmission mechanism 130 is provided with a driving wheel 132, the driven end is provided with a driven wheel 133, the driving wheel 132 is connected to the output shaft of the driving member 120, the driving wheel 132 is in transmission connection with the driven wheel 133, and the driven wheel 133 is connected to the input end 131a of the speed reducer 131.

The driving wheel 132 and the driven wheel 133 in the driving mechanism 130 may be connected by adopting a gear engagement driving mode, a chain driving mode, a belt driving mode and the like, and in the specific embodiment shown in fig. 1 and 2, the driving wheel 132 and the driven wheel 133 are driven by adopting a belt, which does not limit the specific driving modes of the driving wheel 132 and the driven wheel 133. In addition, as shown in fig. 1 and 2, the diameter of the driven wheel 133 may be set to be larger than that of the driving wheel 132, and since the linear speeds of the two transmissions are identical, the arrangement is such that the angular speed at which the driven wheel 133 rotates is lower than that at which the driving wheel 132 rotates when the driving member 120 operates, primarily improving the torque transmitted and improving the flatness of the transmission.

After the driving wheel 132 and the driven wheel 133 are arranged between the driving member 120 and the travelling wheel 140 for transmission, the position of the driving member 120 can be flexibly adjusted according to the requirement, for example, the driving member 120 can be arranged above the travelling wheel 140 as shown in fig. 1 and 2, and the driving member 120 can be arranged at the front side, the rear side and the like of the travelling wheel 140, which is beneficial to improving the flexibility of the arrangement of the driving member 120.

Further, as shown in fig. 1 and 2, in some embodiments, the drive member 120 is disposed on the same side of the support frame 110 as the road wheels 140. By arranging the driving member 120 and the travelling wheel 140 on the same side of the bracket 110, the dimension of the driving assembly 100 in the axial direction of the travelling wheel 140 is greatly reduced, so as to meet the miniaturization requirement of the driving assembly 100.

To meet braking demands, in some embodiments of the present application, a brake is connected between the output shaft of the driver 120 and the driving wheel 132. Among them, electromagnetic brake is preferable.

In order to further reduce the volume of the driving assembly, the present application further proposes an embodiment, and with continued reference to fig. 1 and 2, as shown in the drawings, the bracket 110 is provided with a mounting groove 113, and the driving wheel 132 and the driven wheel 133 are both disposed in the mounting groove 113.

Specifically, as shown in fig. 2, the bracket 110 may be a hollow shell structure, and a part of the wall is hollowed out to form the mounting groove 113 therein, however, in other embodiments, the bracket 110 may be a solid structure, and the mounting groove 113 is formed in a concave manner on one side.

By providing the mounting groove 113 on the bracket 110 and accommodating the driving wheel 132 and the driven wheel 133 in the mounting groove 113, the groove wall of the mounting groove 113 can protect the driving wheel 132 and the driven wheel 133 to a certain extent on the basis of reducing the whole volume of the driving assembly 100, and a reliable environment is provided for the operation of the driving wheel 132 and the driven wheel 133.

The mechanical equipment in the agricultural field generally comprises cultivator, agricultural land leveler, subsoiler, seeder, thresher, water pump, transplanting machine and the like. For working in severe geological environments, such as steep hills, uneven pits, soft lands and the like, mechanical equipment is required to walk normally, a driving mechanism of the mechanical equipment needs to have high torque, so that the torque of the driving mechanism of the walking of the current agricultural mechanical equipment is mostly increased by a chain transmission mode, and the chain transmission load torque is large, but the chain speed is low, and the running speed is slow.

For farmland environments with better conditions, geology is generally flat, no large gradient or pothole exists, and soil hardness is moderate, so that mechanical equipment operating in the farmland does not need larger torque, normal walking can be realized by proper torque, but the normal walking is limited by the characteristics of chain transmission, so that the walking speed is slow, and the operation efficiency is low.

Based on this, considering the normal walking and working efficiency of the farm machinery, the application proposes an embodiment to satisfy the normal walking of the machinery in the farm environment, and simultaneously to ensure the walking speed and working efficiency, specifically as shown in fig. 1 and 2, the driving wheel 132 and the driven wheel 133 are pulleys, and the driving wheel 132 and the driven wheel 133 are in transmission connection through the transmission belt 134.

Compared with chain transmission, the transmission mode of the transmission belt (such as a V-shaped rubber belt, a synchronous toothed belt and the like) is higher in allowed belt speed, so that for farmland operation scenes with flatter topography, the traveling speed of mechanical equipment can be improved by adopting the transmission mode of the transmission belt 134 between the driving wheel 132 and the driven wheel 133, and further the operation efficiency is improved. Further, for the embodiment of the installation groove 113 for accommodating the driving wheel 132 and the driving wheel 133, the driving belt 134 can be accommodated in the installation groove 113, and the installation groove 113 provides a good environment for the driving belt 134 to operate, so as to ensure the working stability of the driving belt.

In order to prevent the slipping phenomenon during the driving process of the driving belt 134, the present application further proposes an embodiment, referring to fig. 1 and 2 again, as shown in the drawings, the bracket 110 is rotatably provided with a tensioning device 135, and the tensioning device 135 abuts against the driving belt 134 to prevent the driving belt 134 from loosening and falling off.

Specifically, the tensioning device 135 may be a tensioning wheel that abuts against the inner side surface of the driving belt 134 to tension the driving belt 134 as shown in fig. 1, or may abut against the outer side surface of the driving belt 134 to tension the driving belt 134, and the tensioning device 135 may also have a smooth cylindrical structure, which is not limited herein.

The tensioning device 135 abutting against the driving belt 134 is arranged to increase the tensioning force on the driving belt 134, so that the reliability of transmission between the driving wheel 132 and the driven wheel 133 is ensured, and the phenomenon of serious slipping is avoided to influence the driving of the travelling wheels 140.

In order to reliably protect the transmission mechanism 130, the present application further proposes an embodiment, and with reference to fig. 2, as shown in the drawing, a slot 1131 for installing the transmission mechanism 130 is formed in the bracket 110, the slot 1131 faces to a side facing away from the travelling wheel 140, and a cover plate 114 is disposed on the bracket 110, where the cover plate 114 is used for covering the slot 1131.

Through setting up notch 1131 to the one side that deviates from walking wheel 140, conveniently carry out the dismouting maintenance of drive mechanism 130 in notch 1131, in addition, through cover board 114 on notch 1131 to cover the protection to inside drive mechanism 130, to the scene of agricultural operation, can prevent that drive mechanism 130 operation in-process from taking place to interfere or twine and taking place to damage with plant or other foreign matter.

In order to protect the driving element 120, the present application further provides an embodiment, specifically, as shown in fig. 2, the driving assembly 100 further includes a protecting shell 180, and the protecting shell 180 covers the outer periphery of the driving element 120 and is fixedly connected to the bracket 110.

The protection shell 180 is used for shielding the driving piece 120, so that foreign matters such as plants can be effectively prevented from being involved in the output shaft of the driving piece 120 to influence structural stability and operation efficiency in agricultural operation application scenes.

In accordance with another aspect of the present application, referring to fig. 3, a front structure of an agricultural machine is shown, and as shown in the drawing, the agricultural machine 500 includes a machine body 200 and the driving assembly 100 in any of the foregoing embodiments, where the driving assembly 100 is disposed on the machine body 200 and is used for driving the machine body 200 to walk.

The agricultural machinery 500 provided by the embodiment of the present application not only can make the driving assembly 100 occupy a smaller volume in the whole agricultural machinery 500 by adopting the driving assembly 100 in any embodiment to perform walking driving, thereby meeting the miniaturization requirement, but also can prevent the problem of winding the output end 131b of the reducer 131 and plants in the working environment, and ensure the reliability of the operation.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict.

Claims (13)

1. A drive assembly, comprising: the device comprises a bracket, a driving piece, a transmission mechanism and travelling wheels;

The support is used for being connected to the mechanical equipment body;

The driving piece is fixed on the bracket;

The transmission mechanism comprises a speed reducer, the speed reducer is fixed on the bracket, at least part of the speed reducer is accommodated in a wheel hub of the travelling wheel, and the output end of the speed reducer is fixedly connected with the wheel hub;

The transmission mechanism further comprises a driving end and a driven end, the transmission mechanism is fixedly arranged in the bracket, the driving end of the transmission mechanism is connected with the driving piece, and the driven end of the transmission mechanism is connected with the input end of the speed reducer;

the driving piece is used for driving the travelling wheel to rotate through the transmission mechanism so as to drive the mechanical equipment body connected to the bracket to walk.

2. The drive assembly of claim 1, further comprising a mounting bracket secured to the bracket and covering an outer periphery of the reducer, the reducer secured to the mounting bracket, at least a portion of the mounting bracket received within the hub;

the mounting frame is provided with a connecting port for the output end of the speed reducer to pass through.

3. The drive assembly according to claim 2, wherein the mounting frame comprises a first frame body and a second frame body, the first frame body is in a cylinder shape with two open ends, one end of the first frame body is fixed on the bracket, and the other end of the first frame body is used for the speed reducer to extend in, so that at least part of the speed reducer is accommodated in the first frame body;

The second frame body is detachably fixed at one end of the first frame body, which is away from the support, and covers the part, which is exposed at one end of the first frame body, which is away from the support, on the speed reducer, and the connecting port is arranged on the second frame body.

4. The drive assembly of claim 2, further comprising a slewing bearing inner race and a slewing bearing outer race;

The hub is provided with a switching disc;

The output end of the speed reducer is fixedly connected with the switching disc through the slewing bearing inner ring,

The slewing bearing outer ring is fixedly connected with the mounting frame.

5. The drive assembly of claim 4, wherein the output end of the decelerator is provided with an extension;

The switching disc comprises a connecting part at the center of the switching disc;

the extension part penetrates through the slewing bearing inner ring and is fixedly connected with the connecting part in the center of the switching disc.

6. The drive assembly according to any one of claims 1-5, wherein the drive end of the transmission is provided with a drive wheel and the driven end is provided with a driven wheel;

The driving wheel is connected with an output shaft of the driving piece, the driving wheel is in transmission connection with the driven wheel, and the driven wheel is connected with an input end of the speed reducer.

7. The drive assembly of claim 6, wherein the drive member and the road wheel are disposed on a same side of the bracket.

8. The drive assembly of claim 6, wherein a brake is connected between the output shaft of the drive member and the drive wheel.

9. The drive assembly of claim 6, wherein the drive wheel and the driven wheel are pulleys and are in driving connection with each other by a belt.

10. The drive assembly of claim 9, wherein a tensioning device is disposed within the bracket, the tensioning device abutting the belt for preventing the belt from loosening and falling off.

11. The drive assembly of any one of claims 1-5, wherein the bracket is provided with a slot for mounting the transmission mechanism, the slot facing away from the road wheel, and wherein the bracket is provided with a cover plate for covering the slot.

12. The drive assembly of any one of claims 1-5, further comprising a protective shell covering an outer periphery of the drive member and fixedly coupled to the bracket.

13. An agricultural machine apparatus comprising an apparatus body and a drive assembly as claimed in any one of claims 1 to 12, the drive assembly being disposed on the apparatus body for driving the apparatus body to walk.