Bridge crossing device and combine harvester

Abstract

The utility model provides a kind of bridge crossing device and combine harvester, comprising: bridge crossing shell;Driving mechanism, including driving motor and reduction box, the reduction casing of the reduction box is installed in the bridge crossing shell, the driving motor is installed in the reduction casing, the reduction box is provided with input interface and output interface, the input interface and the driving motor transmission connection;Bridge crossing lower shaft, install in the bridge crossing shell and with the output interface transmission connection, the bridge crossing lower shaft is used to transmit power to the cutting platform of the combine harvester;Bridge crossing upper shaft, install in the bridge crossing shell and with the bridge crossing lower shaft transmission connection, the bridge crossing upper shaft is used to transmit power to the conveying system of combine harvester.The utility model can significantly improve the integration of system and mechanical efficiency, and omit transmission component can make that space installation is more free, especially suitable for the installation demand of compact side space of combine harvester.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural machinery technology, and in particular relates to a bridge crossing device and a combine harvester. Background Technology

[0002] The power for the bridge-crossing device of a combine harvester is mostly driven by an engine through a multi-stage belt drive. Due to the large span between the front and rear of the machine, especially the bridge-crossing device and the header, which are the foremost components; and because the bridge-crossing device not only needs to be driven itself, but the header connected to the bridge-crossing device also needs power to be driven.

[0003] Current combine harvesters require multiple intermediate drive shafts for transmission. Starting from the engine on the roof, and continuing to the upper and lower axles of the header, multiple sets of belt and chain drives are needed. This method not only occupies a lot of space and has many transmission levels, but also easily leads to energy loss and maintenance problems, affecting transmission efficiency. Furthermore, the header and header devices have high power requirements, and with the increasing power demands of agricultural machinery, this traditional solution results in greater power loss due to its low efficiency. Therefore, the existing belt drive system is not suitable for the growing demands of agricultural machinery. Utility Model Content

[0004] The main purpose of this utility model is to propose a bridge crossing device and a combine harvester, aiming to solve the technical problems of large space occupation and low transmission efficiency of the drive structure of the existing bridge crossing device.

[0005] To achieve the above objectives, this utility model provides a bridge-crossing device for a combine harvester. The bridge-crossing device includes: a bridge-crossing housing; a drive mechanism including a drive motor and a gearbox, wherein the gearbox's gearbox housing is mounted on the bridge-crossing housing, the drive motor is mounted on the gearbox housing, the gearbox is provided with an input interface and an output interface, the input interface and the drive motor being drivenly connected; a lower bridge shaft, mounted on the bridge-crossing housing and drivenly connected to the output interface, the lower bridge shaft being used to transmit power to the header of the combine harvester; and an upper bridge shaft, mounted on the bridge-crossing housing and drivenly connected to the lower bridge shaft, the upper bridge shaft being used to transmit power to the combine harvester's conveying system.

[0006] In this embodiment of the utility model, there are two output interfaces, one of which is connected to the lower shaft of the bridge. The cutting table includes two power input ports, the lower shaft of the bridge is connected to one of the power input ports, and the other output interface is connected to the other power input port.

[0007] In this embodiment of the utility model, the output interface connected to the lower shaft of the bridge is a first interface, and the other output interface is a second interface. The second interface is an external spline shaft protruding from the reduction housing. The external spline shaft is used to extend into the cutting table and drively connect with the power input port.

[0008] In this embodiment of the utility model, the first interface is disposed inside the deceleration housing, and the lower shaft of the bridge extends into the deceleration housing and is connected to the first interface in a transmission manner.

[0009] In this embodiment of the invention, the first interface is a hollow shaft with an internal spline, and the lower bridge shaft and the hollow shaft are connected by a spline.

[0010] In this embodiment of the utility model, the input interface is disposed inside the reduction housing, and the output end of the drive motor extends into the reduction housing and is connected to the input interface in a transmission manner.

[0011] In this embodiment of the utility model, the input interface is an internal spline disposed within the reduction housing, and the output end of the drive motor is an external spline shaft, which extends into the reduction housing and is connected to the internal spline via a spline.

[0012] In this embodiment of the invention, the deceleration housing and the bridge housing are detachably connected; and / or, the motor housing of the drive motor and the deceleration housing are detachably connected.

[0013] In this embodiment of the utility model, the lower shaft of the bridge passes through the bridge housing, and the output end of the lower shaft of the bridge is provided with an extension protruding from the bridge housing. The extension is connected to the upper shaft of the bridge via a transmission assembly.

[0014] This utility model also proposes a combine harvester, which includes a header, a conveying system, and a bridge device as described above.

[0015] Through the above technical solution, the bridge crossing device provided by this utility model embodiment has the following beneficial effects: The bridge-type device achieves direct transmission between the drive motor and the gearbox by installing a separate gearbox and drive motor on the bridge housing near the input end of the lower shaft. This direct transmission eliminates the need for additional transmission components, significantly reducing transmission costs and saving installation space, resulting in a more compact structure. The lower shaft provides power to the header and transmits power to the upper shaft, thus not only driving the header but also acting as a power transmission intermediary, improving the overall system's flexibility and efficiency. This invention integrates the power source, transmission, and power output, with the drive motor directly connected to the gearbox, and the gearbox directly connected to the lower shaft. This significantly improves system integration and mechanical efficiency, and the elimination of transmission components allows for more flexible installation, making it particularly suitable for the compact installation requirements of combine harvesters.

[0016] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0017] The accompanying drawings are provided to illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the bridge crossing device according to an embodiment of the present invention from a certain perspective; Figure 2 This is a structural schematic diagram of the bridge crossing device according to one embodiment of the present invention from another perspective; Figure 3 This is a structural schematic diagram of the bridge crossing device according to an embodiment of the present invention from another perspective; Figure 4 This is a structural schematic diagram of the bridge crossing device according to one embodiment of the present invention from another perspective; Figure 5 This is a schematic cross-sectional view of the bridge device according to one embodiment of the present invention.

[0018] Explanation of reference numerals in the attached figures Detailed Implementation

[0019] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0020] The bridge crossing device according to this utility model is described below with reference to the accompanying drawings.

[0021] like Figures 1 to 5 As shown in the embodiment of this utility model, for use in a combine harvester, the bridge device includes a bridge housing 1, a drive mechanism, a lower bridge shaft 4, and an upper bridge shaft 5. The drive mechanism includes a drive motor 2 and a reduction gearbox 3. The reduction gearbox 3's reduction housing is installed on the bridge housing 1, and the drive motor 2 is installed on the reduction housing. The reduction gearbox 3 is provided with an input interface 31 and an output interface 32, and the input interface 31 is drive-connected to the drive motor 2. The lower bridge shaft 4 is installed on the bridge housing 1 and drive-connected to the output interface 32. The lower bridge shaft 4 is used to transmit power to the header of the combine harvester. The upper bridge shaft 5 is installed on the bridge housing 1 and drive-connected to the lower bridge shaft 4. The upper bridge shaft 5 is used to transmit power to the combine harvester's conveying system 10.

[0022] In one embodiment, the bridge housing 1 includes a first side plate 11, a second side plate 12, an upper cover 13, and a bottom plate 14. The first side plate 11 and the second side plate 12 are arranged opposite each other in the left-right direction (i.e., the width direction of the bridge housing 1). The left and right ends of the upper cover 13 are respectively connected to the first side plate 11 and the second side plate 12. The upper cover 13 and the bottom plate 14 are arranged opposite each other in the up-down direction, and the left and right ends of the bottom plate 14 are respectively connected to the first side plate 11 and the second side plate 12. The reduction housing of the reduction gearbox 3 can be installed on the second side plate 12. The lower shaft 4 and the upper shaft 5 of the bridge are sequentially installed on the bridge housing 1 along the length direction (i.e., the front-back direction) of the bridge housing 1. The lower shaft 4 passes through the entire bridge housing 1. The output end of the lower shaft 4 can be installed on the first side plate 11 through the lower shaft bearing 7 to ensure that it can rotate smoothly. In one embodiment, the upper shaft 5 of the bridge is mounted on the first side plate 11 via an upper shaft bearing 8 and a bearing seat, ensuring smooth rotation of the upper shaft 5. In another embodiment, upper shaft bearings 8 can be provided on both the left and right sides of the upper shaft 5. The lower shaft 4 of the bridge can transmit power to the upper shaft 5 via a transmission assembly 6, which can be located on the first side plate 11. The lower shaft 4 of the bridge can transmit power to the cutting table via a universal joint drive shaft.

[0023] Understandably, the conveying system 10 can adopt the existing transmission method of using sprockets 101 in conjunction with bridge conveying chain 102 for conveying. Several sprockets 101 are installed on the upper shaft 5 of the bridge. The sprockets 101 drive the bridge conveying chain 102, which can transport the straw and grains cut by the header to the threshing and cleaning system of the combine harvester.

[0024] In this embodiment, the bridge device is directly connected to the gearbox 3 via the drive motor 2, and the gearbox 3 is directly connected to the lower shaft 4 of the bridge. This eliminates the need for multi-stage transmission components in the prior art, reducing assembly space. The lower shaft 4 of the bridge is driven by the drive motor 2, which avoids the low efficiency caused by multiple belt drive stages. Electric drive improves transmission efficiency. The use of the drive motor 2 as the power source for the working parts in the combine harvester, with its higher peak power than belt drive, improves overload capacity.

[0025] In this embodiment, the bridge-crossing device uses a separate gearbox 3 and drive motor 2, mounted on the bridge housing 1 near the input end of the lower bridge shaft 4. This direct transmission connection between the drive motor 2 and the gearbox 3 eliminates the need for additional transmission components, significantly reducing transmission costs and saving installation space, resulting in a more compact structure. The lower bridge shaft 4 provides power to the header and also transmits power to the upper bridge shaft 5. Therefore, the lower bridge shaft 4 not only drives the header but also acts as a power transmission intermediary, driving the upper bridge shaft 5, thus improving the overall system's flexibility and efficiency. The upper bridge shaft 5, through driving the combine harvester's conveying system 10, transports the straw and grains cut by the header to the combine harvester's threshing and cleaning system. In this embodiment, by integrating the power source, transmission, and power output into a single unit, and with the drive motor 2 directly connected to the reduction gearbox 3 and the reduction gearbox 3 directly connected to the lower axle 4 of the bridge, the system integration and mechanical efficiency can be significantly improved. Furthermore, omitting the transmission components allows for more flexible spatial installation, making it particularly suitable for the installation requirements of combine harvesters in areas with limited side space.

[0026] Compared to the existing technology that uses the combine harvester's engine for multi-stage belt drive, this embodiment uses an additional drive motor 2 and a reduction gearbox 3 installed on the bridge housing 1, which can greatly shorten the transmission path and reduce power loss during transmission.

[0027] In one embodiment, there are two output interfaces 32. One output interface 32 is connected to the lower shaft 4 of the bridge. The cutting table includes two power input ports. The lower shaft 4 is connected to one of the power input ports, and the other output interface 32 is connected to the other power input port. When the cutting table requires high-power drive, power can be input to the power input ports of the cutting table simultaneously through the reduction gearbox 3 and the lower shaft 4, achieving high-power input. When the cutting table does not require high-power drive, only the power input ports and the lower shaft 4 can be connected, and the cutting table can be driven solely through the lower shaft 4. In this embodiment, by setting two output interfaces 32 on the reduction gearbox 3, the drive requirements of cutting tables with different power can be met, making the bridge device in this embodiment applicable to a wide range of scenarios.

[0028] It should be noted that the output interface 32 connecting the lower shaft 4 of the bridge is the first interface 32a, and the other output interface 32 is the second interface 32b. The second interface 32b is an external splined shaft protruding from the reduction housing. The external splined shaft is used to extend into the cutting table and connect with the power input port for transmission. In this embodiment, the method of extending the reduction gearbox 3 into the cutting table for transmission can further improve the structural compactness of the fit between the cutting table and the bridge device.

[0029] like Figure 5 As shown, the first interface 32a is disposed inside the reduction housing, and the lower shaft 4 of the bridge extends into the reduction housing and is connected to the first interface 32a in a transmission manner. In this embodiment, the second interface 32b is a protruding interface that can extend into the cutting table, and the first interface 32a is a recessed interface that allows the lower shaft 4 of the bridge to extend into, which can improve the structural compactness between the reduction gearbox 3, the lower shaft 4 of the bridge, and the cutting table.

[0030] In this embodiment of the invention, the first interface 32a is a hollow shaft with an internal spline, and the lower bridge shaft 4 and the hollow shaft are connected by a spline. In this embodiment, the lower bridge shaft 4 and the first interface 32a are connected by a spline, which ensures the connection stability between the lower bridge shaft 4 and the gearbox 3.

[0031] Specifically, the input interface 31 is located inside the reduction gear housing, and the output end of the drive motor 2 extends into the reduction gear housing and is connected to the input interface 31 for transmission. In this embodiment, the input interface 31 of the reduction gearbox 3 is a recessed interface inside the reduction gear housing, which facilitates the insertion of the output end of the drive motor 2 and makes the connection between the drive motor 2 and the reduction gearbox 3 tighter.

[0032] In one embodiment, the input interface 31 is an internal spline located within the reduction gear housing, and the output end of the drive motor 2 is an external spline shaft that extends into the reduction gear housing and is connected to the internal spline via a spline. In this embodiment, the drive motor 2 and the reduction gearbox 3 are connected by a spline for transmission, resulting in a more stable connection.

[0033] In this embodiment of the invention, the reduction gear housing and the bridge housing 1 are detachably connected; and the motor housing of the drive motor 2 and the reduction gear housing are detachably connected. In this embodiment, the detachable connection between the reduction gearbox 3 and the bridge housing 1 facilitates the subsequent disassembly, assembly, and maintenance of the reduction gearbox 3, and the detachable connection between the drive motor 2 and the reduction gearbox 3 facilitates the subsequent disassembly, assembly, and maintenance of the drive motor 2, thus ensuring the convenience of disassembly, assembly, and maintenance of the bridge device.

[0034] Understandably, the lower axle 4 of the bridge penetrates the bridge housing 1, and the output end of the lower axle 4 has an extension 41 protruding from the bridge housing 1. The extension 41 is connected to the upper axle 5 of the bridge via the transmission assembly 6. The transmission form of the transmission assembly 6 in this embodiment can be specifically configured according to actual usage requirements. In one embodiment, the transmission assembly 6 can be a transmission method using a wheel set and belt; in other embodiments, a chain or sprocket 101 drive method can also be used. The transmission assembly 6 can be located on the side of the reduction gearbox 3 away from the drive motor 2.

[0035] This utility model also proposes a combine harvester, which includes a header, a conveying system 10, and a bridging device as described above. The specific structure of the bridging device is as described in the above embodiments. Since the combine harvester adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0036] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0039] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A bridge-crossing device for a combine harvester, characterized in that, The bridge crossing device includes: Bridge housing (1); The drive mechanism includes a drive motor (2) and a reduction gearbox (3). The reduction housing of the reduction gearbox (3) is installed on the bridge housing (1). The drive motor (2) is installed on the reduction housing. The reduction gearbox (3) is provided with an input interface (31) and an output interface (32). The input interface (31) and the drive motor (2) are connected in a transmission manner. The lower shaft (4) of the bridge is installed on the bridge housing (1) and is connected to the output interface (32) for transmission. The lower shaft (4) of the bridge is used to transmit power to the header of the combine harvester. The upper shaft (5) of the bridge is installed on the bridge housing (1) and is connected to the lower shaft (4) of the bridge for transmission. The upper shaft (5) of the bridge is used to transmit power to the conveying system (10) of the combine harvester.

2. The bridge crossing device according to claim 1, characterized in that, The number of output interfaces (32) is two, one of which is connected to the lower shaft of the bridge (4). The cutting table includes two power input ports, one of which is connected to the lower shaft of the bridge (4), and the other of which is connected to the other power input port.

3. The bridge device of claim 2, wherein, The output interface (32) connected to the lower shaft (4) of the bridge is the first interface (32a), and the other output interface (32) is the second interface (32b). The second interface (32b) is an external spline shaft protruding from the deceleration housing. The external spline shaft is used to extend into the cutting table and drive the connection with the power input port.

4. The bridge crossing device according to claim 3, characterized in that, The first interface (32a) is located inside the deceleration housing, and the lower shaft (4) of the bridge extends into the deceleration housing and is connected to the first interface (32a) in a transmission manner.

5. The bridge crossing device according to claim 4, characterized in that, The first interface (32a) is a hollow shaft with an internal spline, and the under-bridge shaft (4) and the hollow shaft are connected by a spline.

6. The bridge device according to any one of claims 1 to 5, characterized by The input interface (31) is located inside the deceleration housing, and the output end of the drive motor (2) extends into the deceleration housing and is connected to the input interface (31) in a transmission manner.

7. The bridge crossing device according to claim 6, characterized in that, The input interface (31) is an internal spline located inside the reduction housing, and the output end of the drive motor (2) is an external spline shaft. The external spline shaft extends into the reduction housing and is connected to the internal spline via a spline.

8. The bridge crossing device according to any one of claims 1 to 5, characterized in that, The deceleration housing and the bridge housing (1) are detachably connected; And / or, The motor housing of the drive motor (2) and the reduction housing are detachably connected.

9. The bridge crossing device according to any one of claims 1 to 5, characterized in that, The lower shaft (4) of the bridge passes through the bridge housing (1), and the output end of the lower shaft (4) of the bridge is provided with an extension (41) protruding from the bridge housing (1). The extension (41) is connected to the upper shaft (5) of the bridge through the transmission assembly (6).

10. A combine harvester characterised in that, The combine harvester includes a header, a conveying system (10), and a bridge device as described in any one of claims 1 to 9.

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