CN217463133U

CN217463133U - Working device gearbox and agricultural working machine

Info

Publication number: CN217463133U
Application number: CN202221450438.6U
Authority: CN
Inventors: 张航; 高鹏; 汪波; 陈建军; 符志勇
Original assignee: Hunan Zoomlion Intelligent Agricultural Machinery Co ltd
Current assignee: Hunan Zoomlion Intelligent Agricultural Machinery Co ltd
Priority date: 2022-06-10
Filing date: 2022-06-10
Publication date: 2022-09-20
Anticipated expiration: 2032-06-10

Abstract

The utility model relates to an agricultural machine field discloses an operation device gearbox and agricultural operation machinery, the operation device gearbox includes transmission housing (1) and rotationally installs power input shaft (2), jackshaft (3) and power output shaft (4) to this transmission housing (1), wherein, power input shaft, jackshaft and power output shaft installation are located the coplanar and install drive gear respectively for respective axis of rotation to the moment of torsion of permission by power input shaft (2) input passes through jackshaft (3) and transmits to power output shaft (4). The gearbox of the working device arranges the power input shaft and the power output shaft to have the maximum relative distance, so that the speed change transmission requirements of different working devices can be met by adjusting the positions and postures of the power input shaft and the power output shaft in the whole machine, the positions of the power output shaft and the working devices connected with the power output shaft have better space adaptability, and the gearbox of the working device can adapt to the speed change transmission requirements such as larger height drop.

Description

Working device gearbox and agricultural working machine

Technical Field

The utility model relates to an agricultural machine specifically relates to an operation device gearbox. On the basis, the utility model also relates to an agricultural operation machine such as a seedling throwing machine.

Background

Various types of agricultural machines are generally equipped with a working device for performing work, which receives power output from a power device such as an engine to perform a corresponding work operation. In order to ensure that the working device obtains the required power, the power output by the power plant may be transferred to the working device via a power take-off (PTO), a working device gearbox or the like, so that the working device works as required.

Although the arrangement of components may be improved by arranging a work implement gearbox in an agricultural machine that is independent of the travel gearbox, it is still difficult for existing work implement gearboxes to meet some of the work implement transmission needs of a particular need. For example, in an agricultural working machine, a conventional working device transmission for a rice transplanter can transmit power output from an engine to a rice transplanting mechanism, but when the agricultural working machine is equipped with a rice transplanting mechanism, it is difficult to obtain the power of the engine because the rice transplanting mechanism is located at a relatively high position. Generally, a chain transmission mode can be utilized to transmit power to a higher position so as to drive a seedling throwing mechanism to carry out seedling throwing operation, and the transmission chain leaks outwards and is not lubricated, so that the problems of poor reliability and safety and the like exist.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the inconvenient problem that acquires operation power of the operation device among the partial agricultural machine that prior art exists, providing an operation device gearbox, this operation device gearbox can adapt to the variable speed transmission demand like great high drop, is convenient for transmit power device's power to for example the operation device for throwing the seedling mechanism.

In order to achieve the above object, an aspect of the present invention provides a transmission for a working device, including a transmission housing and a power input shaft, an intermediate shaft and a power output shaft rotatably mounted to the transmission housing, wherein the power input shaft, the intermediate shaft and the power output shaft are mounted on the same plane as their respective rotation axes and have a transmission gear mounted thereon, so as to allow the torque inputted by the power input shaft to pass through the intermediate shaft to be transmitted to the power output shaft.

Preferably, the power input shaft, the intermediate shaft and the power output shaft are installed such that their respective rotation axes are located in the same vertical plane or the same plane inclined with respect to the vertical plane, and the intermediate shaft and the power output shaft are sequentially disposed at positions higher than the power input shaft.

Preferably, the transmission gear includes an input shaft gear mounted on the power input shaft and a plurality of counter shaft gears mounted on the counter shafts, the input shaft gear being slidable in the axial direction of the power input shaft to be selectively engaged with different ones of the counter shaft gears.

Preferably, the work implement gearbox is slidable by the input shaft gear to shift between a high gear and a low gear.

Preferably, the transmission gear includes an output shaft gear mounted on the power output shaft and a plurality of intermediate shaft gears mounted on the intermediate shafts, the output shaft gear being slidable in the axial direction of the power output shaft to be selectively engaged with different ones of the intermediate shaft gears.

Preferably, the output shaft gear is slidable such that there are at least four different gear ratios between the intermediate shaft and the power output shaft.

Preferably, the work device gearbox further comprises a reserved output shaft drivingly connected to the power input shaft.

Preferably, a driving bevel gear is mounted on the power input shaft, and a driven bevel gear meshed with the driving bevel gear is mounted on the reserved output shaft.

Preferably, a dog clutch is provided on at least one of the power input shaft, the intermediate shaft and the power output shaft.

A second aspect of the present invention provides an agricultural working machine, including a vehicle body on which a working device is mounted and a transmission connected to the vehicle body and a power unit, and a gearbox of the working device between the working devices.

Through the technical scheme, the utility model discloses an operation device gearbox arranges power input shaft, jackshaft and power output shaft in the coplanar, so that power input shaft and power output shaft have the spatial arrangement of maximum relative distance, thereby can satisfy the variable speed transmission demand of different operation devices through its position and the posture adjustment in whole machine, make power output shaft and the operation device's of connecting position have better space adaptability, can adapt to the variable speed transmission demand as great high drop, be convenient for with power device's power transmission to for example the operation device for throwing seedling mechanism.

Drawings

Fig. 1 is a schematic cross-sectional view of a transmission of a working device according to a preferred embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of the transmission of the work implement of fig. 1 from a bottom perspective.

Description of the reference numerals

1-a gearbox housing; 11-a housing body; 12-an end cap; 2-a power input shaft; 21-input shaft gear; 22-drive bevel gear; 3-intermediate shaft; 31-a countershaft gear; 4-a power take-off shaft; 41-output shaft gear; 5-reserving an output shaft; 51-driven bevel gear.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It should be understood that the description herein is provided for illustration and explanation of the invention and is not intended to limit the invention.

In the present invention, unless otherwise specified, the use of directional terms such as "upper, lower, left, and right" generally means upper, lower, left, and right as illustrated with reference to the accompanying drawings; "inner and outer" refer to the inner and outer relative to the profile of the components themselves. The directional terms "longitudinal", "lateral", "front", "rear", etc. should be understood in the conventional direction of the vehicle.

Referring to fig. 1 and 2, a gearbox of a working device according to a preferred embodiment of the present invention can be used in an agricultural machine such as a seedling thrower for transmitting power output from a power device such as an engine to a working device such as a seedling thrower. The work machine gearbox comprises a gearbox housing 1 and a power input shaft 2, an intermediate shaft 3 and a power output shaft 4 rotatably mounted to the gearbox housing 1, e.g. by bearings (not numbered). Typically, the transmission housing 1 may have a housing main body 11 and an end cover 12 sealingly mounted to an open end of the housing main body 11, the end cover 12 being mountable to the housing main body 11 by fasteners such as bolts. The main body parts of the power input shaft 2, the intermediate shaft 3 and the power output shaft 4 extend in the inner cavity of the gearbox shell 1, wherein the power input shaft 2 can be connected with power devices such as an engine, an electric motor and the like in a transmission mode to obtain power for driving a working device to act, and in an agricultural machine provided with a power output device (PTO), the power input shaft 2 can be directly connected with the PTO power output shaft or indirectly connected with the PTO power output shaft (such as through a universal transmission mechanism); the power output shaft 4 can be connected to a seedling throwing mechanism and other operation devices in a transmission manner, so that power (torque) input by the power input shaft 2 and transmitted by the intermediate shaft 3 is transmitted to the operation devices in a variable speed manner, and the seedling throwing and other operation actions are completed.

For this purpose, the power input shaft 2, the counter shaft 3 and the power output shaft 4 may be respectively provided with transmission gears (such as an input shaft gear 21, a counter shaft gear 31 and an output shaft gear 41 described later) by which the gear ratio of the working device transmission can be changed by switching the meshing relationship thereof, thereby driving the working device at an appropriate speed and torque.

In this working device transmission, the power input shaft 2, the intermediate shaft 3, and the power output shaft 4 are mounted such that their respective rotational axes are located in the same plane, whereby the transmission case 1 can be formed into a flat structure. In the view shown in fig. 1, the power input shaft 2, the intermediate shaft 3 and the power output shaft 4 are located in the same vertical plane, so that the power input shaft 2 and the power output shaft 4 have the spatial arrangement with the largest relative distance (the axial distance is the largest), and therefore the speed change transmission requirements of different working devices can be met by adjusting the positions and postures of the power input shaft 2 and the power output shaft 4 in the whole machine, so that the power output shaft 4 and the working devices connected with the power output shaft have better spatial adaptability, the speed change transmission requirements such as large height drop can be met, and the power of the power device can be conveniently transmitted to the working devices such as a seedling throwing mechanism.

Therefore, for example, after the power generated by the engine is output through the PTO power output shaft, the power can be received by the power input shaft 2, and after the speed change through the transmission gear, the power is transmitted to the power output shaft 4 which is far from the power input shaft 2, thereby driving the operation device to operate. In this case, in an agricultural working machine such as one used for seedling-throwing work, although the seedling-throwing mechanism is disposed at a relatively high position of the vehicle body (to meet the seedling-throwing demand at a predetermined position), the relative PTO power output shaft has a large height drop, the utility model provides a working device transmission case can also be easily disposed at this agricultural working machine for transmission of working power.

It should be understood that although only one intermediate shaft 3 is provided in the illustrated embodiment, the inventive transmission may have two or more intermediate shafts, as long as the rotational axes thereof are located in the same plane with respect to the rotational axes of the power input shaft 2 and the power output shaft 4, all falling within the scope of the present invention. In addition, although the working device gearbox and the agricultural working machine provided by the invention are mainly described by taking the seedling throwing machine as an example, the working device gearbox can also be applied to other working machines with large vertical and/or horizontal deviation of the working device relative to the power device, such as a pesticide spraying machine with a pesticide box arranged at a higher position.

To better illustrate the composition and construction of the inventive gearbox for a working device, the power input shaft 2, the intermediate shaft 3 and the power output shaft 4 shown in fig. 1 are mounted with their respective axes of rotation in the same vertical plane, wherein the intermediate shaft 3 and the power output shaft 4 are arranged in sequence above the power input shaft 2. Thus, in a scene with a large height drop, power from the power plant can be transmitted to the working plant through the working plant transmission without causing a large difficulty in arrangement, and the reliability is high. According to specific work demand, the utility model discloses an operation device gearbox also can adjust to other installation gestures, if under the situation in being applied to agricultural operation machinery, can arrange this operation device gearbox into making power input shaft 2, jackshaft 3 and power output shaft 4 respective axis of rotation be located the coplanar of relative vertical plane slope, gearbox housing 1 slope is arranged promptly, can compromise the operation power transmission demand of transplanting rice seedlings and throwing seedlings from this, make agricultural operation machinery multi-functional, accomplish different operation operations through being equipped with different operation devices.

Similar to general gearbox, the utility model discloses an operation device gearbox can suitably arrange drive gear according to the transmission demand to realize different variable speed transmission. The shifting of the different gear ratios can be effected between the power input shaft 2 and the intermediate shaft 3, the intermediate shaft 3 and the power output shaft 4. To this end, an input shaft gear 21 may be mounted on the power input shaft 2 and a plurality of counter shaft gears 31 may be mounted on the counter shaft 3, wherein the input shaft gear 21 is slidable in the axial direction of the power input shaft 2 to selectively mesh with different ones of said counter shaft gears 31 to produce different gear ratios between the power input shaft 2 and the counter shaft 3. The structure of the transmission gear itself and the mounting and sliding manner on each shaft can be common in existing gearboxes and will not be described in detail here. For this purpose, an operating mechanism (operating handle) connected to the input shaft gear 21 may be mounted on the working device gearbox to operate so that the input shaft gear 21 engages a different counter gear 31. For complex (especially paddy) operating conditions, the input shaft gear 21 can be manipulated and slid to shift the implement gearbox between high and low (high-low gear shifting) to accommodate different operating resistances.

In addition, the power take-off shaft 4 may be fitted with an output shaft gear 41, the output shaft gear 41 being slidable in the axial direction of the power take-off shaft 4 to selectively mesh with different counter shaft gears 31 to produce different gear ratios between the power take-off shaft 4 and the counter shaft 3. Accordingly, an operating mechanism (operating handle) connected to the output shaft gear 41 may be mounted at the working device transmission to operate so that the output shaft gear 41 engages a different counter gear 31. For complex conditions of different rice varieties and regions, more speed change schemes are generally needed, and for this purpose, four or more different transmission ratios can be set between the intermediate shaft 3 and the power output shaft 4, so that at least 8-gear speed change is formed by combining the high-low gear speed change and the low-gear speed change.

Continuing to refer to fig. 1 and 2, in a preferred embodiment of the present invention, the power input shaft 2 can be further connected with a reserved output shaft 5 in a transmission manner, so as to satisfy the power transmission requirements of other additional operation devices such as a fertilizer applicator. In operation, a drive gear or the like may be added to the reserved output shaft 5 (e.g., at the location of the splines or flat keys thereon) to power the attachment. As described above, since the power input shaft 2, the intermediate shaft 3, and the power output shaft 4 are arranged such that the respective rotation axes are located in the same plane, a large space is occupied in the plane direction, which may cause inconvenience in leading out a reserved power output interface. For this purpose, in the preferred embodiment shown in the figures, the output shaft 5 is arranged perpendicularly to the power input shaft 2, so that the space available for the gearbox of the working device can be utilized to facilitate the power transmission of the additional working device. Specifically, the power input shaft 2 may be mounted with a drive bevel gear 22, and the reserved output shaft 5 may be mounted with a driven bevel gear 51 engaged with the drive bevel gear 22, thereby achieving the switching of the transmission direction. In this case, the utility model discloses a working device gearbox provides more power take off's possibility with lower cost on the basis that does not show the increase space to occupy.

In order to facilitate better control of the working device, the utility model discloses a working device gearbox can be provided with the jaw clutch on power output shaft 4 to control cutting off and supplying of power. The jaw clutch has the advantages of compact structure, reliable work and the like, and can be easily integrated and arranged in the gearbox of the working device. In an alternative embodiment, a dog clutch can also be arranged selectively on the input shaft 2 and/or on the intermediate shaft 3.

The utility model provides an operation device gearbox can be applied to among the agricultural operation machinery to realize operations such as throwing rice seedlings, transplanting rice seedlings. The agricultural working machine is provided with a vehicle body and a working device (such as a seedling throwing mechanism) mounted on the vehicle body, wherein the working device gearbox can be in transmission connection between the power device and the working device so as to transmit the power speed change of the power device to the working device. The operating device gearbox can be arranged at the position which is slightly behind the middle of the front-back direction (longitudinal direction) of the vehicle body, and the operating mechanism for operating to realize speed change can be arranged at the transverse right side of the driver seat and is connected to the corresponding transmission gear through the transmission rod, so that the requirement of large height difference between the PTO power output shaft and the power input of the operating device can be met in space, and the speed change operation is facilitated. By arranging the operating mechanism for the speed change operation near the driver seat, the operational convenience can be significantly improved, whereby the speed change control of the working device can be achieved without a get-off operation during work, which significantly improves the convenience of the gear shift operation in, for example, paddy field work.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. The technical idea of the utility model within the scope, can be right the utility model discloses a technical scheme carries out multiple simple variant, makes up with any suitable mode including each concrete technical feature. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.

Claims

1. A working device transmission, characterized by comprising a transmission housing (1) and a power input shaft (2), an intermediate shaft (3) and a power output shaft (4) rotatably mounted to the transmission housing (1), wherein the power input shaft (2), the intermediate shaft (3) and the power output shaft (4) are mounted with their respective axes of rotation in the same plane and are respectively mounted with transmission gears to allow torque input by the power input shaft (2) to be transmitted to the power output shaft (4) through the intermediate shaft (3).

2. The working device gearbox according to claim 1, characterised in that the power input shaft (2), the intermediate shaft (3) and the power output shaft (4) are mounted with their respective axes of rotation in the same vertical plane or in the same plane inclined to the vertical plane, the intermediate shaft (3) and the power output shaft (4) being arranged in succession higher than the power input shaft (2).

3. The work device gearbox according to claim 1, characterized in that said transmission gears comprise an input shaft gear (21) mounted on said power input shaft (2) and a plurality of intermediate shaft gears (31) mounted on said intermediate shaft (3), said input shaft gear (21) being slidable in the axial direction of said power input shaft (2) to selectively mesh with different ones of said intermediate shaft gears (31).

4. The work device gearbox according to claim 3, characterised in that it is slidable by the input shaft gear (21) to shift between a high gear and a low gear.

5. The working device gearbox according to claim 1, wherein the transmission gears comprise an output shaft gear (41) mounted on the power output shaft (4) and a plurality of intermediate shaft gears (31) mounted on the intermediate shaft (3), the output shaft gear (41) being slidable in the axial direction of the power output shaft (4) to selectively mesh with different ones of the intermediate shaft gears (31).

6. The work device gearbox according to claim 5, characterised in that the output shaft gear (41) is slidable such that there are at least four different transmission ratios between the intermediate shaft (3) and the power take-off shaft (4).

7. The work device gearbox according to any of claims 1-6, characterized in that it further comprises a reserved output shaft (5) which is drivingly connected to the power input shaft (2).

8. The working device gearbox according to claim 7, wherein a drive bevel gear (22) is mounted on the power input shaft (2), and a driven bevel gear (51) which is engaged with the drive bevel gear (22) is mounted on the reserve output shaft (5).

9. The work device gearbox according to any of claims 1 to 6, characterised in that a dog clutch is provided on at least one of the power input shaft (2), intermediate shaft (3) and power output shaft (4).

10. An agricultural work machine comprising a vehicle body to which a work implement is mounted and a work implement gearbox according to any one of claims 1 to 9 mounted to the vehicle body and drivingly connected between a power plant and the work implement.