A front axle transmission mechanism for a small rice transplanter

Abstract

The present invention relates to a front axle transmission mechanism of a small rice transplanter, comprising a front axle cross beam, a housing support sleeve, a front wheel shaft, a front axle drive shaft and a front axle bevel gear shaft, wherein the front axle drive shaft and the front axle bevel gear shaft are arranged in the front axle cross beam through a first bearing, and the front axle drive shaft and the front axle bevel gear shaft are meshed and driven by the front axle driving bevel gear and the front axle driven bevel gear; the housing support sleeve is sleeved on the lower part of the front axle bevel gear shaft through a connecting bearing, the lower part of the housing support sleeve is a front axle bearing shell, the front axle bearing shell is fixed with a front axle bearing cover by bolts, the front wheel shaft is arranged in the front axle bearing shell and the front axle bearing cover through a second bearing, a dustproof oil seal is further arranged between the front wheel shaft and the front axle bearing cover, a front wheel shaft bevel gear is fixed on the front wheel shaft, and the front wheel shaft bevel gear is meshed and driven with the front axle driven bevel gear at the other end of the front axle bevel gear shaft. The present invention has a simple structure and reliable transmission.

Description

Technical Field

[0001] The invention belongs to the field of rice transplanter transmission structures, and in particular relates to a front 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 front axle mechanism of the existing rice transplanter has many parts and a complex structure. In addition, since the front wheel is generally a steering wheel, the front axle housing needs to have the function of relative rotation. If used in harsh environments for a long time, the sealing structure of the rotation part of the front axle housing is not very stable, and mud is easy to enter the interior of the front axle mechanism, resulting in a high failure rate, which affects 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 front axle transmission mechanism of a small rice transplanter, which has a simple structure and reliable transmission.

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

[0006] The front axle transmission mechanism of a small rice transplanter comprises a front axle crossbeam, a housing support sleeve, a front wheel axle, a front axle transmission shaft and a front axle bevel gear shaft. The front axle transmission shaft and the front axle bevel gear shaft are arranged in the front axle crossbeam through a first bearing, and one end of the front axle transmission shaft is fixed with a front axle driving bevel gear, and both ends of the front axle bevel gear shaft are fixed with a front axle driven bevel gear, and the front axle transmission shaft and the front axle bevel gear shaft are meshed and driven by the front axle driving bevel gear and the front axle driven bevel gear; the housing support sleeve is arranged at the lower part of the front axle bevel gear shaft through a connecting bearing sleeve, and the lower part of the housing support sleeve is a front axle bearing shell, and the front axle bearing shell is fixed with a front axle bearing cover by bolts, and the front wheel axle is arranged in the front axle bearing shell and the front axle bearing cover through a second bearing, and a dustproof oil seal is also provided between the front wheel axle and the front axle bearing cover. The front wheel axle is fixed with a front wheel axle bevel gear, and the front wheel axle bevel gear is meshed and driven with the front axle driven bevel gear at the other end of the front axle bevel gear shaft.

[0007] As a preferred solution: an oil seal sleeve is also provided at the connection between the front axle cross beam and the housing support sleeve on the front axle bevel gear shaft, a first skeleton oil seal is provided on the outside of the oil seal sleeve, and a dust seal is also provided between the front axle cross beam and the housing support sleeve.

[0008] As a preferred solution: it also includes a front wheel mounting plate, and the front wheel mounting plate is fixed on the part of the front wheel shaft passing through the front axle bearing cover.

[0009] As a preferred solution: a steering pull plate is also fixed on the outside of the housing support sleeve, and a retaining ring is also provided on the upper part of the connecting bearing in the housing support sleeve.

[0010] As a preferred solution: a flanged sealing cover is further provided on the front axle cross beam, and a shaft sleeve is further provided on the front axle bevel gear shaft.

[0011] 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 greater. In addition, the present invention uses a three-layer structure of an oil seal sleeve, a first skeleton oil seal and a dust seal at the rotation part of the shell, which effectively ensures the isolation of the inside of the shell from the external environment, thereby extending the service life of the front axle mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the front axle transmission mechanism of the present invention;

[0013] Figure 2 It is a schematic cross-sectional structure diagram of the front axle transmission mechanism of the present invention;

[0014] Figure 3 for Figure 2 A partial enlarged view of part E. DETAILED DESCRIPTION

[0015] 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.

[0016] like Figures 1 to 3As shown, the present invention provides a front axle transmission mechanism of a small rice transplanter, including a front axle crossbeam 901, a housing support sleeve 902, a front wheel shaft, a front axle transmission shaft 908 and a front axle bevel gear shaft 911, wherein the front axle transmission shaft 908 and the front axle bevel gear shaft 911 are arranged in the front axle crossbeam 901 through a first bearing 913, a front axle driving bevel gear 909 is fixed to one end of the front axle transmission shaft 908, and a front axle driven bevel gear 910 is fixed to both ends of the front axle bevel gear shaft 911, and the front axle transmission shaft 908 and the front axle driven bevel gear 910 are meshed through the front axle driving bevel gear 909 and the front axle driven bevel gear 910. Transmission; the housing support sleeve 902 is arranged on the lower part of the front axle bevel gear shaft 911 through a connecting bearing sleeve, the lower part of the housing support sleeve is the front axle bearing shell 903, the front axle bearing shell 903 is fixed with a front axle bearing cover 904 by bolts, the front wheel axle is arranged in the front axle bearing shell 903 and the front axle bearing cover 904 through a second bearing 916, and a dustproof oil seal 917 is also provided between the front wheel axle and the front axle bearing cover 904, a front wheel axle bevel gear 915 is fixed on the front wheel axle, and the front wheel axle bevel gear 915 is meshed with the front axle driven bevel gear 910 at the other end of the front axle bevel gear shaft 911 for transmission.

[0017] An oil seal sleeve 914 is also provided at the connection between the front axle cross beam 901 and the housing support sleeve 902 on the front axle bevel gear shaft 911 . A first skeleton oil seal 920 is provided on the outer side of the oil seal sleeve 914 . A dust seal 921 is also provided between the front axle cross beam 901 and the housing support sleeve 902 .

[0018] The front axle mechanism also includes a front wheel mounting plate 905, which is fixed to the portion of the front wheel shaft that passes through the front axle bearing cover 904. A steering pull plate 906 is also fixed to the outside of the housing support sleeve 902, and a retaining ring 918 is also provided at the upper part of the connecting bearing in the housing support sleeve 902. A flanged sealing cover 907 is also provided on the front axle crossbeam 901, and a shaft sleeve 912 is also provided on the front axle bevel gear shaft 911.

[0019] 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 front axle transmission mechanism for a small rice transplanter, characterized in that: The invention comprises a front axle cross beam (901), a housing support sleeve (902), a front wheel shaft, a front axle transmission shaft (908) and a front axle bevel gear shaft (911); the front axle transmission shaft (908) and the front axle bevel gear shaft (911) are arranged in the front axle cross beam (901) via a first bearing (913); a front axle driving bevel gear (909) is fixed at one end of the front axle transmission shaft (908); front axle driven bevel gears (910) are fixed at both ends of the front axle bevel gear shaft (911); the front axle transmission shaft (908) and the front axle driven bevel gear shaft (911) are driven by meshing the front axle driving bevel gear (909) with the front axle driven bevel gear (910); the housing support sleeve (902) comprises a front wheel shaft, a front axle transmission shaft (908) and a front axle transmission shaft (911); The sleeve (902) is arranged at the lower part of the front axle bevel gear shaft (911) through a connecting bearing sleeve, the lower part of the housing supporting the sleeve is a front axle bearing shell (903), the front axle bearing shell (903) is fixed with a front axle bearing cover (904) by bolts, the front wheel shaft is arranged in the front axle bearing shell (903) and the front axle bearing cover (904) through a second bearing (916), a dustproof oil seal (917) is also arranged between the front wheel shaft and the front axle bearing cover (904), a front wheel shaft bevel gear (915) is fixed on the front wheel shaft, and the front wheel shaft bevel gear (915) is meshed with the front axle driven bevel gear (910) at the other end of the front axle bevel gear shaft (911) for transmission; An oil seal sleeve (914) is also provided at the connection between the front axle cross beam (901) and the housing support sleeve (902) on the front axle bevel gear shaft (911); a first skeleton oil seal (920) is provided on the outside of the oil seal sleeve (914); and a dust seal (921) is also provided between the front axle cross beam (901) and the housing support sleeve (902); A steering pull plate (906) is also fixed to the outside of the housing support sleeve (902), and a retaining ring (918) is also provided on the upper part of the connecting bearing in the housing support sleeve (902).

2. The front axle transmission mechanism of a small rice transplanter according to claim 1 is characterized in that: It also includes a front wheel mounting plate (905), wherein the front wheel mounting plate (905) is fixed to the portion of the front wheel shaft that passes through the front axle bearing cover (904).

3. The front axle transmission mechanism of a small rice transplanter according to claim 1 is characterized in that: A flanged sealing cover (907) is also provided on the front axle crossbeam (901), and a shaft sleeve (912) is also provided on the front axle bevel gear shaft (911).

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