Transmission device of agricultural operation machine

Abstract

The utility model discloses a transmission device of an agricultural operation machine, which comprises a main shaft, an auxiliary shaft and a transition shaft, the main shaft is rotatably connected with an idler gear, the outer side of the idler gear is in spline connection with a shifting gear, and the main shaft is in static connection with a main shaft output gear; the auxiliary shaft is in static connection with an auxiliary shaft input gear which is normally meshed with the idle gear, the auxiliary shaft is rotationally connected with an auxiliary shaft transmission gear which is normally meshed with the main shaft output gear and a reverse gear duplicate gear, the reverse gear duplicate gear is in clutch fit with the shifting gear, and one end of the auxiliary shaft is connected with a walking clutch mechanism and an operation clutch mechanism; the transition shaft is in static connection with a first transition gear which is normally meshed with the auxiliary shaft transmission gear, a second transition gear which is normally meshed with the reverse gear duplicate gear and a third transition gear which is in clutch fit with the gear shifting gear. According to the scheme, the problem that in the prior art, a transmission device cannot meet the transmission requirements of walking and operation is solved.

Description

Technical Field

[0001] The utility model relates to an agricultural working machine, in particular to a transmission device of the agricultural working machine. Background Art

[0002] The transmission device of an agricultural machine refers to a device that adjusts the power of the engine and transmits it to the traveling mechanism and the working mechanism, generally using a gear transmission method.

[0003] Chinese patent document CN214578649U discloses a small harvester gearbox, including a secondary shaft installed in a gearbox housing, a shift active double gear installed on the secondary shaft, a small tooth on the shift active double gear can mesh with a first gear driven gear installed on a reverse gear shaft, and a large tooth on the shift active double gear can mesh with a second gear driven gear installed on the reverse gear shaft. The utility model adopts mechanical gear transmission, has a simple structure and high reliability, realizes the switching of different gears by switching the shift active double gear, and also realizes the convenience of forward and reverse switching, further improves the control of the small harvester, reduces the cost of the whole machine, and thus meets the needs of farmers in hilly and mountainous areas.

[0004] Although the above-mentioned prior art solution realizes multi-speed control, it is only suitable for operation when the working machine is walking or working alone, and is not suitable for use in agricultural working machines that need to both walk and work. Utility Model Content

[0005] The utility model aims to provide a transmission device for an agricultural working machine, so as to solve the problem that the transmission device in the prior art cannot meet the transmission requirements of both traveling and working.

[0006] In order to achieve the above-mentioned purpose, the basic scheme of the utility model provides a transmission device for an agricultural working machine, including a main shaft, a secondary shaft and a transition shaft arranged in parallel with each other, the main shaft is rotatably connected with an idler gear, the outer spline of the idler gear is connected with a shift gear, and the main shaft is statically connected with a main shaft output gear; the secondary shaft is statically connected with a secondary shaft input gear that is constantly meshed with the idler gear, the secondary shaft is rotatably connected with a secondary shaft transfer gear that is constantly meshed with the main shaft output gear, and the secondary shaft is also rotatably connected with a reverse gear double gear, the reverse gear double gear and the secondary shaft transfer gear are respectively located on both sides of the secondary shaft input gear, the reverse gear double gear is clutched with the shift gear, one end of the secondary shaft is connected with a travel clutch mechanism, and the other end of the secondary shaft is connected with a working clutch mechanism; the transition shaft is statically connected with a first transition gear that is constantly meshed with the secondary shaft transfer gear, statically connected with a second transition gear that is constantly meshed with the reverse gear double gear, and statically connected with a third transition gear that is clutched with the shift gear.

[0007] Preferably, a fourth transition gear having a diameter greater than that of the third transition gear is statically connected to the transition shaft, the fourth transition gear is engaged with a shift gear in a clutch, and the shift gear is a double gear.

[0008] Preferably, the first transition gear, the second transition gear, the third transition gear and the fourth transition gear form a quadruple gear.

[0009] Preferably, the countershaft transfer gear is a duplex gear, and reduction transmission is performed between the main shaft output gear and the countershaft transfer gear, and between the countershaft transfer gear and the first transition gear.

[0010] Preferably, the travel clutch mechanism comprises a travel ratchet driving gear and a travel ratchet driven gear, the travel ratchet driving gear is spline-connected to the secondary shaft, the travel ratchet driven gear is rotationally connected to the secondary shaft, and the travel ratchet driving gear and the travel ratchet driven gear are clutched and cooperated through an axially extending ratchet portion.

[0011] Preferably, the working clutch mechanism includes a working output shaft and a working coupling gear, the working output shaft is coaxially connected to the secondary shaft, the working coupling gear is spline-connected to the working output shaft, and the working coupling gear is clutched with the secondary shaft transmission gear via a coupling pawl extending axially.

[0012] The utility model has the following beneficial effects:

[0013] 1. This solution enables the transmission device to perform travel transmission and working transmission at the same time, and the travel transmission and working transmission can be transmitted and disconnected independently, so that the transmission device can be adjusted accordingly as needed, thereby improving the practicality of the transmission device.

[0014] 2. This solution makes the transmission device compact in structure and small in size while realizing at least four levels of adjustment of the travel transmission, which is convenient for installation and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of an embodiment of a transmission device of an agricultural working machine of the utility model;

[0016] Figure 2 It is a three-dimensional diagram of the utility model;

[0017] Figure 3 This is a schematic diagram of the utility model when a travel driving shaft and a travel output shaft are set. DETAILED DESCRIPTION

[0018] The following is further described in detail through specific implementation methods:

[0019] The figure marks in the drawings of the specification include: main shaft 1, counter shaft 2, transition shaft 3, main shaft output gear 4, idler gear 5, shift gear 6, first transition gear 7, second transition gear 8, third transition gear 9, fourth transition gear 10, counter shaft transfer gear 11, counter shaft input gear 12, reverse gear double gear 13, travel ratchet driving gear 14, travel ratchet driven gear 15, working combining gear 16, working output shaft 17, travel driving shaft 18, travel driving gear 19, bevel gear pair 20, travel output shaft 21.

[0020] The embodiment is basically as shown in the attached Figure 1 , Figure 2 and Figure 3 As shown: A transmission device of an agricultural machine includes a main shaft 1, a secondary shaft 2 and a transition shaft 3 arranged in parallel with each other. An idler gear 5 is rotatably connected to the main shaft 1, and a shift gear 6 is splined to the outer side of the idler gear 5. In this embodiment, the shift gear 6 is a duplex gear having two gear parts, one large and one small. A main shaft output gear 4 is statically connected to the main shaft 1. In this embodiment, the main shaft output gear 4 is preferably formed integrally with the main shaft 1. A secondary shaft transfer gear 11 that is constantly meshed with the main shaft output gear 4 is rotatably connected to the secondary shaft 2. In this embodiment, the secondary shaft transfer gear 11 is a duplex gear having two gear parts, one large and one small. There is a reduction transmission between the secondary shaft transfer gear 11 and the main shaft output gear 4. A secondary shaft input gear 12 that is constantly meshed with the idler gear 5 is statically connected to the secondary shaft 2. In this embodiment, the secondary shaft input gear 12 is preferably splined to the secondary shaft 2, so as to facilitate the assembly operation of the secondary shaft input gear 12. The countershaft 2 is also rotatably connected with a reverse gear double gear 13, which has two gear parts, one large and one small. The reverse gear double gear 13 and the countershaft transfer gear 11 are respectively located on both sides of the countershaft input gear 12, and the reverse gear double gear 13 is clutched with the shift gear 6.

[0021] The transition shaft 3 is statically connected with a first transition gear 7 that is constantly meshed with the secondary shaft transfer gear 11, a second transition gear 8 that is constantly meshed with the reverse gear double gear 13, and a third transition gear 9 that is statically connected to the shift gear 6. In this embodiment, the transition shaft 3 is statically connected with a fourth transition gear 10 that has a diameter greater than the third transition gear 9, and the fourth transition gear 10 is clutched with the shift gear 6. In this embodiment, the first transition gear 7, the second transition gear 8, the third transition gear 9 and the fourth transition gear 10 form a four-linked gear, and are connected to the transition shaft 3 by splines, so as to facilitate assembly operations. In this embodiment, there is a reduction transmission between the secondary shaft transfer gear 11 and the first transition gear 7.

[0022] One end of the secondary shaft 2 is connected to a travel clutch mechanism. In the present embodiment, the travel clutch mechanism includes a travel ratchet driving gear 14 and a travel ratchet driven gear 15. The travel ratchet driving gear 14 is spline-connected to the secondary shaft 2, and the travel ratchet driven gear 15 is rotationally connected to the secondary shaft 2. The travel ratchet driving gear 14 and the travel ratchet driven gear 15 are clutched and matched through the axially extending ratchet portion. The other end of the secondary shaft 2 is connected to an operation clutch mechanism. In the present embodiment, the operation clutch mechanism includes an operation output shaft 17 and an operation coupling gear 16. The operation output shaft 17 is coaxially rotationally connected to the secondary shaft 2, and the operation coupling gear 16 is spline-connected to the operation output shaft 17. The operation coupling gear 16 and the secondary shaft transfer gear 11 are clutched and matched through the coupling ratchet extending in the axial direction.

[0023] The transmission device also includes a travel driving shaft 18 and a travel output shaft 21. The travel driving shaft 18 is driven by a travel driving gear 19 and a travel ratchet driven gear 15. The travel output shaft 21 is vertically arranged on a different plane from the secondary shaft 2. The travel driving shaft 18 and the travel output shaft 21 are driven by a bevel gear pair 20.

[0024] The specific implementation process is as follows: the power of the main shaft 1 is transmitted to the secondary shaft transfer gear 11 through the main shaft output gear 4, and the secondary shaft transfer gear 11 transmits the power to the first transition gear 7, so that the second transition gear 8, the third transition gear 9 and the fourth transition gear 10 rotate synchronously. When the mobile shift gear 6 is meshed with the fourth transition gear 10, the fourth transition gear 10 transmits the power to the idler gear 5 through the shift gear 6, and the idler gear 5 transmits the power to the secondary shaft input gear 12, so that the secondary shaft 2 rotates forward. The direction of the positive rotation of the secondary shaft 2 is defined as the direction of rotation when the agricultural machine moves forward. When the mobile shift gear 6 is meshed with the third transition gear 9, the third transition gear 9 transmits the power to the idler gear 5 through the shift gear 6, and the idler gear 5 transmits the power to the secondary shaft input gear 12, so that the secondary shaft 2 rotates forward. Since the diameter of the fourth transition gear 10 is greater than that of the third transition gear 9, when power is transmitted through the fourth transition gear 10, the rotation speed of the secondary shaft 2 is faster than when power is transmitted through the third transition gear 9, that is, the power transmission of the fourth transition gear 10 is fast gear transmission, and the power transmission of the third transition gear 9 is slow gear transmission.

[0025] When the mobile shift gear 6 is meshed with the reverse gear double gear 13, the second transition gear 8 transmits power to the reverse gear double gear 13, and the reverse gear double gear 13 transmits power to the idler gear 5 through the shift gear 6. The idler gear 5 drives the layshaft 2 to rotate through the layshaft input gear 12. At this time, the rotation direction of the layshaft 2 is reverse rotation, that is, the rotation direction of the layshaft 2 when the agricultural machine is moving backward.

[0026] The transmission and disconnection of the travel power can be achieved by controlling the engagement state between the travel ratchet driving gear 14 and the travel ratchet driven gear 15 at the end of the secondary shaft 2 .

[0027] When the mobile work coupling gear 16 is coupled with the countershaft transmission gear 11, the countershaft transmission gear 11 transmits power to the work output shaft 17 through the work coupling gear 16, thereby rotating the work output shaft 17. When the mobile work coupling gear 16 is separated from the countershaft transmission gear 11, the power transmission is disconnected, that is, the work output shaft 17 stops rotating.

[0028] This solution realizes multi-gear power output of fast travel gear, slow travel gear and reverse gear, and the travel transmission and the working transmission can be controlled independently, thereby improving the practicality of the transmission device.

[0029] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. A transmission device for an agricultural machine, comprising a main shaft, a secondary shaft and a transition shaft arranged parallel to each other, characterized in that: The main shaft is rotatably connected to an idler gear, the outer spline of the idler gear is connected to a shift gear, and the main shaft is statically connected to a main shaft output gear; the countershaft is statically connected to a countershaft input gear that is constantly meshing with the idler gear, and the countershaft is rotatably connected to a countershaft transfer gear that is constantly meshing with the main shaft output gear; the countershaft is also rotatably connected to a reverse gear double gear, the reverse gear double gear and the countershaft transfer gear are respectively located on both sides of the countershaft input gear, the reverse gear double gear is clutched with the shift gear, one end of the countershaft is connected to a travel clutch mechanism, and the other end of the countershaft is connected to a working clutch mechanism; the transition shaft is statically connected to a first transition gear that is constantly meshing with the countershaft transfer gear, statically connected to a second transition gear that is constantly meshing with the reverse gear double gear, and statically connected to a third transition gear that is clutched with the shift gear.

2. The transmission device of an agricultural machine according to claim 1, characterized in that: The transition shaft is statically connected with a fourth transition gear having a diameter greater than that of the third transition gear. The fourth transition gear is engaged with a shift gear in a clutch manner. The shift gear is a double gear.

3. The transmission device of an agricultural machine according to claim 2, characterized in that: The first transition gear, the second transition gear, the third transition gear and the fourth transition gear form a quadruple gear.

4. A transmission device for an agricultural machine according to claim 1, 2 or 3, characterized in that: The secondary shaft transfer gear is a double gear, and there is a reduction transmission between the main shaft output gear and the secondary shaft transfer gear, and between the secondary shaft transfer gear and the first transition gear.

5. The transmission device of an agricultural machine according to claim 4, characterized in that: The travel clutch mechanism comprises a travel ratchet driving gear and a travel ratchet driven gear, the travel ratchet driving gear is spline-connected to the secondary shaft, the travel ratchet driven gear is rotationally connected to the secondary shaft, and the travel ratchet driving gear and the travel ratchet driven gear are clutched and matched via an axially extending ratchet portion.

6. The transmission device of an agricultural machine according to claim 5, characterized in that: The working clutch mechanism includes a working output shaft and a working coupling gear. The working output shaft is coaxially connected to the secondary shaft for rotation. The working coupling gear is spline-connected to the working output shaft. The working coupling gear is clutched with the secondary shaft transmission gear via a coupling pawl extending in the axial direction.

7. The transmission device of an agricultural machine according to claim 6, characterized in that: The transmission device also includes a travel driving shaft and a travel output shaft. The travel driving shaft is driven by a travel driving gear and a travel ratchet driven gear. The travel output shaft is vertically arranged on a non-planar basis with the secondary shaft. The travel driving shaft and the travel output shaft are driven by a bevel gear pair.

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