Power transmission structure and tractor

Abstract

The utility model provides a kind of power transmission structure and tractor, it is related to tractor transmission field.The power transmission structure includes power source and the transmission assembly being connected with the power source, the transmission assembly is formed with first transmission part and second transmission part, the first transmission part is connected with hydraulic gear pump, heat pump corresponding, the second transmission part is connected with front PTO case corresponding, to can simultaneously transmit power to the hydraulic gear pump, the heat pump and the front PTO case in it.Compared with prior art, the power transmission structure in the utility model does not need to additionally add expensive equipment or process special-shaped structure, and the comprehensive production cost is lower;In addition, the power transmission structure can simultaneously transmit power to three components, and the space utilization is higher, that is, more available space can be saved for the whole machine, and the power transmission structure is relatively simple in structure, and the occupied space is smaller.

Description

Technical Field

[0001] This application relates to the field of tractor transmission, and in particular to a power transmission structure and a tractor. Background Technology

[0002] There are two main ways to obtain power from the hydraulic gear pump in existing pure electric tractors. The first is to set the hydraulic gear pump in the rear axle housing and take power from the rear axle gear. However, this method will result in irregular housing shape and increased housing volume, making housing processing more difficult and costly. In addition, a large number of rear axle gears are required, resulting in lower transmission efficiency and a larger space occupation. The second method is to add a separate drive motor and controller corresponding to the hydraulic gear pump. However, the drive motor and controller are large in size, occupying the overall layout space of the machine. Furthermore, the additional drive motor and controller will increase production costs. Utility Model Content

[0003] In view of this, the purpose of this application is to provide a power transmission structure and tractor to solve the problems of high overall production cost and large space occupation caused by the existing power take-off method of hydraulic gear pump.

[0004] In accordance with the above objectives, a first aspect of this utility model provides a power transmission structure, wherein the power transmission structure includes a power source and a transmission assembly connected to the power source, the transmission assembly having a first transmission section and a second transmission section, the first transmission section being correspondingly connected to a hydraulic gear pump and a cooling pump, and the second transmission section being correspondingly connected to a front PTO box, so as to be able to transmit power simultaneously to the hydraulic gear pump, the cooling pump and the front PTO box.

[0005] Preferably, the power source is a PTO motor.

[0006] Preferably, the transmission assembly includes a first gear sleeved on the output shaft of the PTO motor.

[0007] Preferably, the transmission assembly includes a second gear that meshes with the first gear; the transmission assembly also includes a third gear that meshes with the second gear.

[0008] Preferably, the third gear is sleeved on the outer side of the first drive shaft, and the two ends of the first drive shaft form the first transmission part; the two ends of the first drive shaft are respectively connected to the hydraulic gear pump and the cooling pump.

[0009] Preferably, the second gear and the third gear are arranged at intervals along a first direction, such that the hydraulic gear pump is located on the side of the PTO motor.

[0010] Preferably, the transmission assembly includes a fourth gear, which meshes with both the first gear and the second gear.

[0011] Preferably, the transmission assembly further includes a shock absorber, the first end of the transmission shaft of the shock absorber being connected to the fourth gear; the second end of the transmission shaft of the shock absorber is formed as the second transmission part.

[0012] Preferably, the power input shaft of the front PTO box is connected to the drive shaft of the shock absorber.

[0013] According to a second aspect of the present invention, a tractor is provided, wherein the tractor includes the power transmission structure as described above.

[0014] According to the power transmission structure and tractor of this utility model, the power transmission structure relies on an existing power source and specifically includes a transmission assembly connected to the power source. This transmission assembly forms a first transmission section and a second transmission section. A hydraulic gear pump and a cooling section are simultaneously connected to the first transmission section, and the front PTO box is connected to the second transmission section. This allows power to be transmitted simultaneously to the hydraulic gear pump, the cooling pump, and the front PTO box. Compared to existing technologies, the power transmission structure of this utility model does not require additional expensive equipment or the processing of irregular structures, resulting in lower overall production costs. Furthermore, this power transmission structure can transmit power to three components simultaneously, achieving high space utilization and saving more usable space for the entire machine. Moreover, the structure of this power transmission structure is relatively simple and occupies less space.

[0015] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the power transmission structure according to an embodiment of the present utility model; Figure 2 This is another schematic diagram of the power transmission structure according to an embodiment of the present invention.

[0017] Icons: 1-PTO motor; 21-First gear; 22-Second gear; 23-Third gear; 24-Fourth gear; 25-First drive shaft; 26-Shock absorber; 31-Hydraulic gear pump; 32-Cooling pump; 33-Front PTO box. Detailed Implementation

[0018] The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0019] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0020] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.

[0021] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0022] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.

[0023] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relation terms used herein will be interpreted accordingly.

[0024] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0025] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0026] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.

[0027] According to a first aspect of this utility model, a power transmission structure is provided, such as... Figures 1 to 2As shown, the power transmission structure in this embodiment includes a power source and a transmission assembly connected to the power source. The transmission assembly comprises a first transmission section and a second transmission section. The first transmission section is connected to the hydraulic gear pump 31 and the cooling pump 32, and the second transmission section is connected to the front PTO box 33. Thus, the power from the power source can be simultaneously transmitted to the hydraulic gear pump 31, the cooling pump 32, and the front PTO box 33 via this transmission assembly. The specific connection and positional relationships of the above-mentioned components of the power transmission structure according to this utility model will be described in detail below.

[0028] In this embodiment, the power source is a PTO motor 1, which is an inherent component in the tractor. That is, this power transmission structure relies on the inherent power source in the tractor, thereby effectively reducing the overall production cost and effectively improving space utilization.

[0029] like Figures 1 to 2 As shown, the transmission assembly in this embodiment includes: a first gear 21 mounted on the output shaft of the PTO motor 1, a second gear 22 meshing with the first gear 21, a third gear 23 meshing with the second gear 22, and a fourth gear 24. The fourth gear 24 meshes with both the first gear 21 and the second gear 22 to improve stability during transmission. Thus, through the cooperation of these four gears, power can be simultaneously transmitted to the hydraulic gear pump 31, the cooling pump 32, and the front PTO housing 33. This demonstrates that efficient power transmission can be achieved through a simple transmission structure, with a small footprint and high transmission efficiency.

[0030] Specifically, the second gear 22 is sleeved on the intermediate shaft (not shown in the figure) and rotatably connected to the intermediate shaft, which can be connected to the housing of the PTO motor 1; the third gear 23 is sleeved on the outer side of the first transmission shaft 25, the two ends of the first transmission shaft 25 forming the first transmission part, and the two ends of the first transmission shaft 25 are respectively connected to the hydraulic gear pump 31 and the cooling pump 32 (power input end). To ensure smooth power transmission, the third gear 23 rotates synchronously with the first transmission shaft 25. Further, as... Figures 1 to 2 As shown, the second gear 22 and the third gear 23 are arranged at intervals along the first direction (in the direction indicated by the arrow) so that the hydraulic gear pump 31 is located on the side of the PTO motor 1 and is connected to the housing of the PTO motor 1. This can further reduce the space occupied by the structure and improve the space utilization of the whole machine.

[0031] Furthermore, in this embodiment, such as Figures 1 to 2As shown, the transmission assembly also includes a shock absorber 26. The first end of the drive shaft of the shock absorber 26 is connected to the fourth gear 24 (the fourth gear 24 can be fixedly sleeved on the outer side of the drive shaft of the shock absorber 26); the second end of the drive shaft of the shock absorber 26 is formed as the second transmission part, and the power input shaft of the front PTO box 33 is connected to the second end of the drive shaft of the shock absorber 26.

[0032] It should be noted that the specific connection methods between the various gears and shafts, and the specific connection methods between the shafts and the power input ends of the hydraulic gear pump 31, the cooling pump 32, and the front PTO box 33, are all conventional technical means in this field, and therefore will not be elaborated further. Furthermore, there are no restrictions on the specifications or specific locations of the gears in the transmission assembly; these should be determined comprehensively based on actual conditions, such as the specifications of the PTO motor 1, as long as the aforementioned technical effects can be achieved.

[0033] According to the power transmission structure described above, this power transmission structure relies on an existing power source and specifically includes a transmission component connected to the power source. This transmission component comprises a first transmission section and a second transmission section. A hydraulic gear pump 31 and a heat dissipation section are simultaneously connected to the first transmission section, while the front PTO box 33 is connected to the second transmission section. This allows power to be simultaneously transmitted to the hydraulic gear pump 31, the heat dissipation pump 32, and the front PTO box 33. Compared to existing technologies, the power transmission structure of this invention does not require additional expensive equipment or the processing of irregularly shaped structures, resulting in lower overall production costs. Furthermore, this power transmission structure can simultaneously transmit power to three components, achieving high space utilization and saving more usable space for the entire machine. Moreover, the structure of this power transmission structure is relatively simple and occupies less space.

[0034] According to a second aspect of the present invention, a tractor is provided, wherein the tractor includes the power transmission structure as described above.

[0035] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The protection scope of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this application. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the protection scope of this application. Therefore, the protection scope of this application should be defined by the protection scope of the claims.

Claims

1. A power transmission structure, characterized in that, The power transmission structure includes a power source and a transmission assembly connected to the power source. The transmission assembly has a first transmission section and a second transmission section. The first transmission section is connected to a hydraulic gear pump and a cooling pump, and the second transmission section is connected to a front PTO box, so that power can be transmitted to the hydraulic gear pump, the cooling pump and the front PTO box simultaneously.

2. The power transmission structure according to claim 1, characterized in that, The power source is a PTO motor.

3. The power transmission structure according to claim 2, characterized in that, The transmission assembly includes a first gear fitted onto the output shaft of the PTO motor.

4. The power transmission structure according to claim 3, characterized in that, The transmission assembly includes a second gear that meshes with the first gear; the transmission assembly also includes a third gear that meshes with the second gear.

5. The power transmission structure according to claim 4, characterized in that, The third gear is sleeved on the outer side of the first drive shaft, and the two ends of the first drive shaft form the first transmission part; the two ends of the first drive shaft are respectively connected to the hydraulic gear pump and the cooling pump.

6. The power transmission structure according to claim 5, characterized in that, The second gear and the third gear are arranged at intervals along a first direction such that the hydraulic gear pump is located on the side of the PTO motor.

7. The power transmission structure according to claim 4, characterized in that, The transmission assembly includes a fourth gear, which meshes with both the first gear and the second gear.

8. The power transmission structure according to claim 7, characterized in that, The transmission assembly also includes a shock absorber, the first end of the drive shaft of the shock absorber being connected to the fourth gear; the second end of the drive shaft of the shock absorber is formed as the second transmission part.

9. The power transmission structure according to claim 8, characterized in that, The power input shaft of the front PTO box is connected to the drive shaft of the shock absorber.

10. A tractor, characterized in that, The tractor includes the power transmission structure as described in any one of claims 1 to 9.

Images