A small rice transplanter rear axle transmission mechanism

Abstract

The present invention relates to a small-sized rice transplanter rear axle transmission mechanism, including an intermediate gear box and a rear axle side transmission box, the two ends of the intermediate gear box are respectively connected with two rear axle side transmission boxes through a rear axle clutch, the rear axle side transmission box includes a rear axle bearing cover and a rear axle bearing shell fixed by bolts, a rear axle drive shaft, a rear axle bevel gear shaft and a rear wheel shaft are also provided in the rear axle bearing cover and the rear axle bearing shell through a third bearing, a rear axle drive bevel gear is fixed to one end of the rear axle drive shaft, a rear axle driven bevel gear is fixed to both ends of the rear axle bevel gear shaft, the rear axle drive shaft and the rear axle bevel gear shaft are meshed and driven by the rear axle drive bevel gear and the rear axle driven bevel gear, a rear axle large bevel gear is fixed to the rear wheel shaft, and the rear wheel shaft and the rear axle bevel gear shaft are meshed and driven by the rear axle large bevel gear and the rear axle driven bevel gear. The present invention has a simple structure, reliable transmission, and meets the working condition of four-wheel drive.

Description

Technical Field

[0001] The invention belongs to the field of rice transplanter transmission structures, and in particular relates to a rear axle transmission mechanism of a small rice transplanter. Background Art

[0002] A rice transplanter is an agricultural machine that plants rice seedlings in rice fields. When planting, a mechanical claw first takes out several rice seedlings from the seedbed and plants them in the soil of the field. In order to keep the angle between the seedbed and the ground at right angles, the front end of the mechanical claw must move in an elliptical curve. The movement is accomplished by a planetary mechanism of rotating or deforming gears, and the forward engine can drive these moving machines at the same time. The rice transplanter must have anti-slip wheels and a floating design to move on the soil. If the seedlings are to be planted in pieces, the rice seedlings are taken out from a specific seedling box and then planted mechanically.

[0003] The rear axle mechanism of the existing rice transplanter has many components and a complex structure. In order to ensure stability during steering in a four-wheel drive rice transplanter, the rear axle generally needs to be equipped with a differential, which makes the overall structure more complicated. In addition, the more complex the structure, the higher the probability of component failure, which may even affect the use. Summary of the invention

[0004] In order to solve the above technical problems, the purpose of the present invention is to provide a rear axle transmission mechanism for a small rice transplanter, which has a simple structure, reliable transmission and meets the working conditions of four-wheel drive.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A rear axle transmission mechanism of a small rice transplanter comprises an intermediate gear box and a rear axle side transmission box, the two ends of the intermediate gear box are respectively connected to the two rear axle side transmission boxes through a rear axle clutch, the rear axle side transmission box comprises a rear axle bearing cover and a rear axle bearing shell fixed by bolts, a rear axle drive shaft, a rear axle bevel gear shaft and a rear wheel shaft are also provided in the rear axle bearing cover and the rear axle bearing shell through a third bearing, a rear axle drive bevel gear is fixed to one end of the rear axle drive shaft, a rear axle driven bevel gear is fixed to both ends of the rear axle bevel gear shaft, the rear axle drive shaft and the rear axle bevel gear shaft are meshed and driven by the rear axle drive bevel gear and the rear axle driven bevel gear, a rear axle large bevel gear is fixed on the rear wheel shaft, and the rear wheel shaft and the rear axle bevel gear shaft are meshed and driven by the rear axle large bevel gear and the rear axle driven bevel gear.

[0007] As a preferred solution: it also includes a rear wheel mounting plate, and the rear wheel mounting plate is fixed on the portion of the rear wheel axle passing through the rear axle bearing cover.

[0008] As a preferred solution: a second skeleton oil seal is further provided between the rear axle drive bevel gear and the rear axle bearing housing.

[0009] As a preferred solution: a sealing cover is further provided on the upper portion of the rear axle bearing housing, and a dustproof oil seal is further provided between the rear axle bearing cover and the rear wheel axle.

[0010] The front axle mechanism of the present invention adopts three transmission shafts through bearings, and the shafts are respectively driven by bevel gear meshing, so the connection is reliable and the stability is better; in addition, the rear axle of the present invention is provided with a clutch between the two side transmission boxes to replace the differential, so the structure is simplified, the reliability is high, and the assembly is also relatively convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the rear axle transmission mechanism of the present invention;

[0012] Figure 2 It is a schematic cross-sectional structure diagram of a side transmission box of the rear axle transmission mechanism of the present invention. DETAILED DESCRIPTION

[0013] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0014] like Figure 1 and Figure 2 As shown, the present invention provides a rear axle transmission mechanism of a small rice transplanter, including an intermediate gear box 1001 and a rear axle side transmission box 1003, wherein the two ends of the intermediate gear box 1001 are connected to the two rear axle side transmission boxes 1003 through a rear axle clutch 1002, respectively, and the rear axle side transmission box 1003 includes a rear axle bearing cover 1011 and a rear axle bearing shell 1012 fixed by bolts, and a rear axle drive shaft, a rear axle bevel gear shaft 1007 and a rear axle bevel gear shaft 1008 are arranged in the rear axle bearing cover 1011 and the rear axle bearing shell 1012 through a third bearing 1009. The wheel shaft 1014, one end of the rear axle drive shaft is fixed with a rear axle drive bevel gear 1008, both ends of the rear axle bevel gear shaft 1007 are fixed with rear axle driven bevel gears 1006, the rear axle drive shaft and the rear axle bevel gear shaft 1007 are driven by the meshing of the rear axle drive bevel gear 1008 and the rear axle driven bevel gear 1006, the rear wheel shaft 1014 is fixed with a rear axle large bevel gear 1013, the rear wheel shaft 1014 and the rear axle bevel gear shaft 1007 are driven by the meshing of the rear axle large bevel gear 1013 and the rear axle driven bevel gear 1006.

[0015] The rear axle mechanism further includes a rear wheel mounting plate 1015, which is fixed to the portion of the rear wheel axle 1014 that passes through the rear axle bearing cover 1011. A second skeleton oil seal 1010 is also provided between the rear axle drive bevel gear 1008 and the rear axle bearing shell 1012. A sealing cover 1005 is also provided on the upper part of the rear axle bearing shell 1012, and a dustproof oil seal 1016 is also provided between the rear axle bearing cover 1011 and the rear wheel axle 1014.

[0016] The above is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, which are also considered as the protection scope of the present invention.

Claims

1. A small rice transplanter rear axle transmission mechanism, characterized in that: The invention comprises an intermediate gearbox (1001) and a rear axle transmission box (1003), wherein two ends of the intermediate gearbox (1001) are respectively connected to two rear axle transmission boxes (1003) via a rear axle clutch (1002), wherein the rear axle transmission box (1003) comprises a rear axle bearing cover (1011) and a rear axle bearing shell (1012) fixed by bolts, wherein a rear axle drive shaft, a rear axle bevel gear shaft (1007) and a rear wheel shaft (1014) are arranged in the rear axle bearing cover (1011) and the rear axle bearing shell (1012) via a third bearing (1009), and wherein the rear axle drive shaft, a rear axle bevel gear shaft (1007) and a rear wheel shaft (1014) are arranged in the rear axle bearing cover (1011) and the rear axle bearing shell (1012). A rear axle driving bevel gear (1008) is fixed to one end of the axle driving shaft, rear axle driven bevel gears (1006) are fixed to both ends of the rear axle bevel gear shaft (1007), the rear axle driving shaft and the rear axle bevel gear shaft (1007) are driven by meshing of the rear axle driving bevel gear (1008) and the rear axle driven bevel gear (1006), a rear axle large bevel gear (1013) is fixed to the rear wheel shaft (1014), and the rear wheel shaft (1014) and the rear axle bevel gear shaft (1007) are driven by meshing of the rear axle large bevel gear (1013) and the rear axle driven bevel gear (1006); It also includes a rear wheel mounting plate (1015), wherein the rear wheel mounting plate (1015) is fixed to a portion of the rear wheel shaft (1014) that passes through the rear axle bearing cover (1011); A second skeleton oil seal (1010) is also provided between the rear axle driving bevel gear (1008) and the rear axle bearing housing (1012).

2. The rear axle transmission mechanism of a small rice transplanter according to claim 1, characterized in that: A sealing cover (1005) is also provided on the upper portion of the rear axle bearing housing (1012), and a dustproof oil seal (1016) is also provided between the rear axle bearing cover (1011) and the rear wheel shaft (1014).

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