Power output device, chassis assembly and operation machine

Abstract

The utility model relates to the technical field of operation machines, and discloses a power output device, a chassis assembly and an operation machine. The force output device comprises a packaging shell, a wet clutch, a gear transmission module and a power input shaft. The wet clutch is arranged in the packaging shell and is provided with an input end and an output end; the gear transmission module is arranged in the packaging shell and comprises a power transmission shaft, a power output shaft and a gear set module, the power transmission shaft and the power output shaft are in transmission connection through the gear set module, the power transmission shaft is detachably connected with the output end of the wet clutch, and the power output shaft extends out of the packaging shell; the power input shaft is in transmission connection with the input end of the wet clutch. According to the power output device disclosed by the invention, the wet clutch and the gear transmission module in the power output device are detachably connected, so that the equipment maintenance efficiency is improved, and the transmission precision after reassembly is guaranteed.

Description

Technical Field

[0001] This application belongs to the field of construction machinery technology, specifically relating to a power output device, chassis assembly and construction machinery. Background Technology

[0002] In the power transmission system of agricultural machinery, the power take-off (PTO) unit is directly connected to the engine to provide power to the machinery's superstructure. Therefore, as a critical power transmission unit, the PTO unit's structural reliability and ease of maintenance directly affect the overall machine's performance.

[0003] In existing technologies, the power take-off device adopts an integrated design, with the clutch output end and the gear transmission part connected as an inseparable whole. This structural solution has revealed significant engineering defects in practical applications:

[0004] Due to the inseparable structural design of the clutch and gear transmission, when a transmission component fails within the device, maintenance personnel cannot selectively replace the damaged part. Even if only a single gear or shaft segment is damaged, the clutch and its associated transmission components must be disassembled and replaced separately. This maintenance method severely impacts equipment repair efficiency. Furthermore, replacing a partially damaged component requires complete disassembly of the power take-off device's internal structure, which damages the original assembly reference surfaces and tolerances, making it difficult to restore the original transmission accuracy after reassembly. Utility Model Content

[0005] The purpose of this application is to provide a power take-off device, chassis assembly, and working machinery to solve the problems in the prior art where the power take-off device clutch adopts a non-separable gear shaft structure, which leads to difficulties in maintenance and repair, and affects the transmission accuracy upon reassembly.

[0006] To achieve the above objectives, the first aspect of this application provides a power output device for use in construction machinery, the power output device comprising:

[0007] Encapsulation housing;

[0008] A wet clutch is disposed within the encapsulation housing, and the wet clutch has an input end and an output end;

[0009] A gear transmission module, disposed within the encapsulation housing, includes a power transmission shaft, a power output shaft, and a gear set module. The power transmission shaft and the power output shaft are connected via the gear set module. The power transmission shaft is detachably connected to the output end of the wet clutch. The power output shaft extends outside the encapsulation housing for connection to a universal joint drive shaft in the working machinery.

[0010] The power input shaft has one end connected to the input end of the wet clutch and the other end connected to the power supply device in the working machinery.

[0011] As a further improvement to the above technical solution:

[0012] In some embodiments, the power transmission shaft is connected to the output end of the wet clutch via a key connection, a coupling connection, or a flange connection.

[0013] The power input shaft is connected to the input end of the wet clutch via a key, a coupling, or a flange.

[0014] In some embodiments, the gear set module includes a first power transmission gear, a second power transmission gear, and a power output gear mechanism;

[0015] The first power transmission gear and the second power transmission gear are detachably arranged on the power transmission shaft, wherein both the first power transmission gear and the second power transmission gear can rotate with the power transmission shaft;

[0016] The power output gear mechanism is disposed on the power output shaft and meshes with the first power transmission gear and the second power transmission gear respectively. The power output gear mechanism is used to perform gear switching so that the power transmission shaft can transmit power to the power output shaft by selecting the first power transmission gear or the second power transmission gear.

[0017] In some embodiments, the meshing transmission ratio between the power output gear mechanism and the first power transmission gear is greater than the meshing transmission ratio between the power output gear mechanism and the second power transmission gear.

[0018] Alternatively, the meshing transmission ratio between the power output gear mechanism and the first power transmission gear is less than the meshing transmission ratio between the power output gear mechanism and the second power transmission gear.

[0019] In some embodiments, the power output gear mechanism includes a first output gear, a power output synchronizer, and a second output gear arranged sequentially along the axial direction of the power output shaft.

[0020] The first output gear and the second output gear are rotatably mounted on the power output shaft. The first output gear meshes with the first power transmission gear, and the second output gear meshes with the second power transmission gear.

[0021] The power output shaft is further provided with a third power transmission gear that meshes with the power output synchronizer. The power output synchronizer is used to perform gear switching so that the third power transmission gear can selectively connect with the first output gear or the second output gear.

[0022] In some embodiments, the power output synchronizer includes a meshing sleeve and a shift actuator, the shift actuator being used to drive the meshing sleeve to slide axially along the power output shaft;

[0023] The gear shifting actuator is a manually controlled mechanical actuator.

[0024] In some embodiments, the power output synchronizer includes a meshing sleeve and a shift actuator, the shift actuator being used to drive the meshing sleeve to slide axially along the power output shaft;

[0025] The shift actuator is either an electro-hydraulic actuator or a motor-assisted drive actuator.

[0026] A second aspect of this application also provides a chassis assembly including a power supply device and a power output device according to the first aspect described above.

[0027] A third aspect of this application also provides a work machine, including a chassis assembly according to the second aspect described above.

[0028] Compared to existing technologies, the power take-off device, chassis assembly, and work machinery provided in this application have at least the following beneficial effects:

[0029] The power output device provided in this application integrates the wet clutch and gear transmission module into a housing, and uses a power input shaft to supply power to the input end of the wet clutch. The gear transmission module and the output end of the wet clutch are detachably connected through the power transmission shaft. This allows the wet clutch and gear transmission module to be separated. When one of the wet clutch and gear transmission module malfunctions or is damaged, only one structure needs to be removed for inspection and replacement during maintenance, without the need for complete disassembly of the entire device, which greatly improves the efficiency of equipment maintenance.

[0030] In addition, modular disassembly and replacement can preserve the original assembly reference surfaces and fitting tolerances as much as possible, thus ensuring the transmission accuracy after assembly.

[0031] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0032] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings:

[0033] Figure 1 An axonometric view of a partial structure of a power output device after the concealed portion of the housing is encapsulated, as provided in an embodiment of this application.

[0034] Figure 2 Exploded view of the power output device provided in the embodiments of this application.

[0035] Figure 3 A simplified structural diagram of a power output device provided in an embodiment of this application;

[0036] Figure 4 This is a schematic diagram of the gear meshing transmission in a power output device provided in an embodiment of this application.

[0037] Explanation of reference numerals in the attached figures

[0038] 100. Power take-off device; 110. Wet clutch; 111. Input end; 112. Output end; 120. Gear transmission module; 120a. Mounting base; 121. Power transmission shaft; 122. Power output shaft; 123. Gear set module; 1230. First power transmission gear; 1231. Second power transmission gear; 1232. Power output gearing mechanism; 1233. First output gear; 1234. Power output synchronizer; 1235. Second output gear; 1236. Third power transmission gear; 130. Power input shaft. Detailed Implementation

[0039] The specific embodiments of this application 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 this application.

[0040] The present application will now be described in detail with reference to the accompanying drawings and exemplary embodiments.

[0041] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 This embodiment provides a power output device 100, which can be applied to working machinery. The power output device 100 is used for transmission connection with the power supply device of the working machinery to provide power to the upper structure of the working machinery.

[0042] In this embodiment, the power output device 100 includes a housing, a wet clutch 110, a gear transmission module 120, and a power input shaft 130. Both the wet clutch 110 and the gear transmission module 120 are housed within the housing, achieving modular integration.

[0043] The wet clutch 110 has an input end 111 and an output end 112. The gear transmission module 120 includes a power transmission shaft 121, a power output shaft 122, and a gear set module 123. The power transmission shaft 121 and the power output shaft 122 are connected by the gear set module 123. The power transmission shaft 121 is detachably connected to the output end 112 of the wet clutch 110. The power output shaft 122 extends outside the housing and is used to connect to a universal joint drive shaft in the working machinery. The universal joint drive shaft is used to transmit power to the upper structure of the working machinery. Thus, the wet clutch 110 and the gear transmission module 120 are divided into two independent modules through the detachable connection between the power transmission shaft 121 and the wet clutch 110. The two modules can be disassembled and replaced separately without affecting each other.

[0044] One end of the power input shaft 130 is connected to the input end 111 of the wet clutch 110, and the other end is connected to the power supply device in the working machinery. In this way, the power (torque) output by the power supply device is transmitted to the wet clutch 110 through the power input shaft 130. The wet clutch 110 can optionally transmit the power to the power output shaft 122 through the gear transmission module 120, thereby providing power to the upper structure of the working machinery.

[0045] Please see Figure 2 and Figure 3 Optionally, the power transmission shaft 121 is connected to the output end 112 of the wet clutch 110 via a key fit (e.g., spline fit), a coupling fit, or a flange fit. It should be understood that the above are merely illustrative examples and are not intended to limit the scope of protection of this application.

[0046] Optionally, the power input shaft 130 and the input end 111 of the wet clutch 110 are connected by a key fit (e.g., spline fit), a coupling fit, or a flange fit. It should be understood that the above are merely illustrative examples and are not intended to limit the scope of protection of this application.

[0047] Compared to existing technologies, the power output device 100 provided in this embodiment integrates the wet clutch 110 and the gear transmission module 120 into a housing, and uses the power input shaft 130 to supply power to the input end 111 of the wet clutch 110. The gear transmission module 120 and the output end 112 of the wet clutch 110 are detachably connected through the power transmission shaft 121. This allows the wet clutch 110 and the gear transmission module 120 to be separated. When either the wet clutch 110 or the gear transmission module 120 malfunctions or is damaged, only one of the structures needs to be removed for inspection and replacement during maintenance, without the need for complete disassembly of the entire device, which greatly improves the equipment maintenance efficiency.

[0048] In addition, modular disassembly and replacement can preserve the original assembly reference surfaces and fitting tolerances as much as possible, thus ensuring the transmission accuracy after assembly.

[0049] To more clearly describe the technical solution of this application, this embodiment will be described in detail with respect to the power output device 100, as follows:

[0050] Please see Figure 1 and Figure 2 The aforementioned gear transmission module 120 also includes a mounting base 120a, on which the power transmission shaft 121, power output shaft 122, and gear set module 123 are all mounted.

[0051] Please refer to the following: Figure 3 and Figure 4 The gear set module 123 includes a first power transmission gear 1230, a second power transmission gear 1231, and a power output gear shifting mechanism 1232. The first power transmission gear 1230 and the second power transmission gear 1231 are mounted on the power transmission shaft 121 and spaced apart along the axial direction of the power transmission shaft 121. The first power transmission gear 1230 and the second power transmission gear 1231 are detachably connected to the power transmission shaft 121, for example, through a spline connection or a key connection. Thus, both the first power transmission gear 1230 and the second power transmission gear 1231 can rotate with the power transmission shaft 121.

[0052] The power output gear mechanism 1232 is disposed on the power output shaft 122 and meshes with the first power transmission gear 1230 and the second power transmission gear 1231 respectively. The power output gear mechanism 1232 is used to perform gear switching so that the power transmission shaft 121 can transmit power to the power output shaft 122 through the first power transmission gear 1230 or through the second power transmission gear 1231.

[0053] Specifically, the meshing transmission ratio between the power output gear shifting mechanism 1232 and the first power transmission gear 1230 is greater than the meshing transmission ratio between the power output gear shifting mechanism 1232 and the second power transmission gear 1231; or, the meshing transmission ratio between the power output gear shifting mechanism 1232 and the first power transmission gear 1230 is less than the meshing transmission ratio between the power output gear shifting mechanism 1232 and the second power transmission gear 1231. Thus, the power output gear shifting mechanism 1232 selects different output torques and speeds by performing gear shifting.

[0054] Specifically, the power output gear mechanism 1232 includes a first output gear 1233, a power output synchronizer 1234, and a second output gear 1235 arranged sequentially along the axial direction of the power output shaft 122. The first output gear 1233 and the second output gear 1235 are rotatably mounted on the power output shaft 122. The first output gear 1233 meshes with the first power transmission gear 1230, and the second output gear 1235 meshes with the second power transmission gear 1231. It is understood that the transmission ratio of the first output gear 1233 meshing with the first power transmission gear 1230 is different from the transmission ratio of the second output gear 1235 meshing with the second power transmission gear 1231, in order to achieve outputs of different speeds and torques.

[0055] Furthermore, the power output shaft 122 is also provided with a third power transmission gear 1236 that meshes with the power output synchronizer 1234. The power output synchronizer 1234 is used to perform gear switching so that the third power transmission gear 1236 can selectively be connected to the first output gear 1233 or the second output gear 1235.

[0056] The power output synchronizer 1234 includes a meshing sleeve and a shift actuator, which drives the meshing sleeve to slide axially along the power output shaft 122. The shift actuator is a manually controlled mechanical actuator.

[0057] In some embodiments, the power output synchronizer 1234 includes a meshing sleeve and a shift actuator, the shift actuator being used to drive the meshing sleeve to slide axially along the power output shaft 122; wherein, the shift actuator is an electro-hydraulic actuator or a motor-assisted drive actuator.

[0058] Alternatively, an electro-hydraulic automatic gear shifting method can be adopted: an electro-hydraulic actuator + TCU controls the gear shifting to achieve automatic gear switching.

[0059] Alternatively, a hybrid power shifting method can be adopted: the electric motor is integrated into the gearbox, and the electric motor assists in shifting, while also being equipped with a battery and electronic control system.

[0060] Furthermore, this embodiment also provides a chassis assembly. The chassis assembly includes a power supply device and a power output device 100 according to the above embodiment.

[0061] Please see Figures 1 to 4 This embodiment also provides a working machine, and more particularly relates to an agricultural machine. The working machine includes a power supply device, a superstructure, and a chassis assembly according to the above embodiment.

[0062] It should be noted that, in this application, unless otherwise stated, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" used to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0063] In the description of this application, 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 technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0064] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," 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 components; 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 expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0065] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. 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.

[0066] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A power output device, characterized in that, Applied to construction machinery, the power output device (100) includes: Encapsulation housing; A wet clutch (110) is disposed within the encapsulation housing, the wet clutch (110) having an input end (111) and an output end (112); A gear transmission module (120), disposed within the encapsulation housing, includes a power transmission shaft (121), a power output shaft (122), and a gear set module (123). The power transmission shaft (121) and the power output shaft (122) are connected via the gear set module (123). The power transmission shaft (121) is detachably connected to the output end (112) of the wet clutch (110). The power output shaft (122) extends outside the encapsulation housing for connection with a universal joint drive shaft in the working machinery. The power input shaft (130) is connected at one end to the input end (111) of the wet clutch (110) and at the other end to the power supply device in the working machinery.

2. The power output device according to claim 1, characterized in that, The power transmission shaft (121) and the output end (112) of the wet clutch (110) are connected by a key, a coupling, or a flange.

3. The power output device according to claim 1, characterized in that, The power input shaft (130) and the input end (111) of the wet clutch (110) are connected by a key, a coupling, or a flange.

4. The power output device according to claim 1, characterized in that, The gear module (123) includes a first power transmission gear (1230), a second power transmission gear (1231), and a power output gear mechanism (1232); The first power transmission gear (1230) and the second power transmission gear (1231) are detachably arranged on the power transmission shaft (121), wherein both the first power transmission gear (1230) and the second power transmission gear (1231) can rotate with the power transmission shaft (121); The power output gear mechanism (1232) is disposed on the power output shaft (122) and meshes with the first power transmission gear (1230) and the second power transmission gear (1231) respectively. The power output gear mechanism (1232) is used to perform gear switching so that the power transmission shaft (121) can transmit power to the power output shaft (122) through the first power transmission gear (1230) or through the second power transmission gear (1231).

5. The power output device according to claim 4, characterized in that, The meshing transmission ratio between the power output gear mechanism (1232) and the first power transmission gear (1230) is greater than the meshing transmission ratio between the power output gear mechanism (1232) and the second power transmission gear (1231). Alternatively, the meshing transmission ratio between the power output gear mechanism (1232) and the first power transmission gear (1230) is less than the meshing transmission ratio between the power output gear mechanism (1232) and the second power transmission gear (1231).

6. The power output device according to claim 4 or 5, characterized in that, The power output gear mechanism (1232) includes a first output gear (1233), a power output synchronizer (1234), and a second output gear (1235) arranged sequentially along the axial direction of the power output shaft (122); The first output gear (1233) and the second output gear (1235) are rotatably mounted on the power output shaft (122). The first output gear (1233) meshes with the first power transmission gear (1230), and the second output gear (1235) meshes with the second power transmission gear (1231). The power output shaft (122) is also provided with a third power transmission gear (1236) that meshes with the power output synchronizer (1234). The power output synchronizer (1234) is used to perform gear switching so that the third power transmission gear (1236) can be selectively connected to the first output gear (1233) or the second output gear (1235).

7. The power output device according to claim 6, characterized in that, The power output synchronizer (1234) includes a meshing sleeve and a shift actuator, the shift actuator being used to drive the meshing sleeve to slide along the axial direction of the power output shaft (122); The gear shifting actuator is a manually controlled mechanical actuator.

8. The power output device according to claim 6, characterized in that, The power output synchronizer (1234) includes a meshing sleeve and a shift actuator, the shift actuator being used to drive the meshing sleeve to slide along the axial direction of the power output shaft (122); The shift actuator is either an electro-hydraulic actuator or a motor-assisted drive actuator.

9. A chassis assembly, characterized in that, It includes a power supply device and a power output device (100) according to any one of claims 1-8.

10. A type of operating machinery, characterized in that, Includes the chassis assembly according to claim 9.

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