A front drive axle assembly for a tractor for small ridge spacing planting

Abstract

The utility model discloses a special tractor front drive axle assembly for small ridge distance planting, include: central reduction gear assembly, central reduction gear assembly both ends fixedly connected with bridge short section, the outside of bridge short section is provided with knuckle housing, knuckle housing outside fixedly connected with the end reduction gear assembly, the outside of central reduction gear assembly is installed with through -core oil cylinder, the both ends of through -core oil cylinder are respectively hinged in the knuckle housing of both sides, knuckle housing is equipped with the structure of retraction, the connecting flange surface of knuckle housing with bridge short section is retracted to central reduction gear assembly center line direction, to shorten bridge body total width. The utility model discloses through to the compact re -design of bridge short section and knuckle, fundamentally reduces bridge body total width, makes it not need to modify and can directly apply to corn small ridge distance operation.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, and in particular to a front drive axle assembly for a tractor specifically designed for planting with small ridge spacing. Background Technology

[0002] Tractors are indispensable power machines in modern agriculture, and the performance of their drive axles directly affects the traction, maneuverability, and operational efficiency of the entire machine. Traditional tractor drive axles are typically designed to be long to meet the demands of versatility and large steering angles. However, in corn planting, smaller fixed ridge spacing is commonly used. The width of existing standard drive axles cannot accommodate such small ridge spacing; if forced to operate on narrow ridges, the tires will crush the ridges, damaging the crops. To solve this problem, users are often forced to "reverse-mount" the tires, but this is a non-standard and unsafe operation that alters the tire's stress state, accelerates wear, poses safety hazards, and is cumbersome to adjust. Utility Model Content

[0003] The purpose of this utility model is to provide a front drive axle assembly for a tractor specifically designed for small-row planting. By redesigning the bridge frame short section and steering knuckle to be more compact, the overall width of the axle body is fundamentally reduced, making it directly applicable to small-row corn planting without modification.

[0004] To achieve the purpose of this utility model, this utility model provides a front drive axle assembly for a tractor specifically designed for small-row planting, comprising: a central reducer assembly, with bridge frame short sections fixedly connected to both ends of the central reducer assembly; a steering knuckle housing is provided on the outer side of the bridge frame short section; an end reducer assembly is fixedly connected to the outer side of the steering knuckle housing; a through-hole cylinder is installed on the outer side of the central reducer assembly; the two ends of the through-hole cylinder are respectively hinged to the steering knuckle housing on both sides; the steering knuckle housing is designed with an inward-retracting structure; the connecting flange of the steering knuckle housing and the bridge frame short section is inward-retracting towards the centerline of the central reducer assembly to shorten the overall width of the axle.

[0005] As a preferred embodiment of this utility model, the length of the cable tray short section is 400-600mm.

[0006] As a preferred embodiment of this invention, the steering knuckle housing and the end reducer assembly are connected by a flange.

[0007] As a preferred technical solution of this utility model, the through-hole cylinder includes a double-acting cylinder, which is fixedly connected to the outside of the central reducer assembly and is arranged parallel to the bridge section. Both ends of the double-acting cylinder are poweredly connected to tie rods, and the free ends of the two tie rods are respectively hinged to the outer wall of the steering knuckle housing.

[0008] As a preferred embodiment of this utility model, an agricultural machinery bracket is fixedly connected to the top of the central reducer assembly, and the bidirectional hydraulic cylinder is fixedly connected to the agricultural machinery bracket.

[0009] As a preferred technical solution of this utility model, the inward structure of the steering knuckle housing is specifically as follows: the main body of the steering knuckle housing extends inclinedly from the connection point with the bridge short section towards the longitudinal centerline of the central reducer assembly, so that the mounting center of the connecting flange at the end for connecting the end reducer assembly is set closer to the center of the bridge body.

[0010] As a preferred embodiment of this utility model, an auxiliary steering arm is provided on the outer wall of the steering knuckle housing, and the auxiliary steering arm is located on the inner side of the steering knuckle housing near the tilt angle, and the free end of the tie rod is hinged to the auxiliary steering arm.

[0011] Compared with the prior art, this utility model provides a front drive axle assembly for a tractor specifically designed for planting with small ridge spacing, which has the following beneficial effects:

[0012] This invention fundamentally reduces the overall width of the bridge by redesigning the bridge frame short section and steering knuckle in a more compact manner, allowing it to be directly applied to corn ridge planting without modification. The steering knuckle housing adopts an inward-retracting structure, with its connecting flange to the end reducer assembly recessed inward towards the bridge's centerline. This allows the wheel mounting center to move inward, and combined with the bridge frame short section, significantly shortens the distance from the center of the bridge frame housing to the left and right wheel mounting surfaces while maintaining the necessary steering angle, thus reducing the overall bridge width. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the model of this utility model.

[0015] 1 is the central reducer assembly, 2 is the bridge section, 3 is the steering knuckle housing, 4 is the end reducer assembly, 5 is the through-hole cylinder, 6 is the double-acting cylinder, 7 is the tie rod, 8 is the agricultural machinery bracket, and 9 is the auxiliary steering arm. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1-2 This utility model embodiment provides a front drive axle assembly for a tractor specifically designed for small-row planting, comprising: a central reducer assembly 1, with bridge section 2 fixedly connected to both ends of the central reducer assembly 1; a steering knuckle housing 3 disposed on the outer side of the bridge section 2; an end reducer assembly 4 fixedly connected to the outer side of the steering knuckle housing 3; a through-hole cylinder 5 mounted on the outer side of the central reducer assembly 1; the two ends of the through-hole cylinder 5 being respectively hinged to the steering knuckle housing 3 on both sides; the steering knuckle housing 3 being designed with an inward-retracting structure; and the connecting flange of the steering knuckle housing 3 and the bridge section 2 being inward-retracting towards the centerline of the central reducer assembly 1 to shorten the overall width of the axle.

[0018] In one embodiment of this utility model, the length of the cable tray section 2 is 500mm.

[0019] In one embodiment of this utility model, the steering knuckle housing 3 and the end reducer assembly 4 are connected by a flange.

[0020] In one embodiment of the present invention, the through-hole cylinder 5 includes a bidirectional cylinder 6, which is fixedly connected to the outside of the central reducer assembly 1 and is arranged parallel to the bridge section 2. Both ends of the bidirectional cylinder 6 are poweredly connected to tie rods 7, and the free ends of the two tie rods 7 are respectively hinged to the outer wall of the steering knuckle housing 3.

[0021] In one embodiment of the present invention, an agricultural machinery bracket 8 is fixedly connected to the top of the central reducer assembly 1, and the bidirectional hydraulic cylinder 6 is fixedly connected to the agricultural machinery bracket 8.

[0022] In one embodiment of this utility model, the inward structure of the steering knuckle housing 3 is specifically as follows: the main body of the steering knuckle housing 3 extends obliquely from the connection point with the bridge short section 2 towards the longitudinal centerline of the central reducer assembly 1, so that the mounting center of the connecting flange at the end for connecting the end reducer assembly 4 is set closer to the center of the bridge body.

[0023] In one embodiment of the present invention, an auxiliary steering arm 9 is provided on the outer wall of the steering knuckle housing 3, and the auxiliary steering arm 9 is located on the inner side of the steering knuckle housing 3 near the tilt angle, and the free end of the tie rod 7 is hinged to the auxiliary steering arm 9.

[0024] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A front drive axle assembly for a tractor specifically designed for planting with small ridge spacing, characterized in that, include: A central reducer assembly (1) is provided. Both ends of the central reducer assembly (1) are fixedly connected to a bridge section (2). A steering knuckle housing (3) is provided on the outside of the bridge section (2). An end reducer assembly (4) is fixedly connected on the outside of the steering knuckle housing (3). A through-hole cylinder (5) is installed on the outside of the central reducer assembly (1). Both ends of the through-hole cylinder (5) are respectively hinged to the steering knuckle housing (3) on both sides. The steering knuckle housing (3) is designed with an inward-retracting structure. The connecting flange of the steering knuckle housing (3) and the bridge section (2) is inward-retracting towards the center line of the central reducer assembly (1) to shorten the overall width of the bridge body.

2. The front drive axle assembly for a tractor specifically designed for small-row planting according to claim 1, characterized in that: The length of the bridge section (2) is 400-600mm.

3. The front drive axle assembly for a tractor specifically designed for small-row planting according to claim 1, characterized in that: The steering knuckle housing (3) and the end reducer assembly (4) are connected by a flange.

4. The front drive axle assembly for a tractor specifically designed for small-row planting according to claim 1, characterized in that: The through-hole cylinder (5) includes a two-way cylinder (6), which is fixedly connected to the outside of the central reducer assembly (1) and is arranged parallel to the bridge short section (2). Both ends of the two-way cylinder (6) are poweredly connected to tie rods (7), and the free ends of the two tie rods (7) are respectively hinged to the outer wall of the steering knuckle housing (3).

5. The front drive axle assembly for a tractor specifically designed for small-row planting according to claim 4, characterized in that: The central reducer assembly (1) is fixedly connected to the top of the agricultural machinery bracket (8), and the bidirectional oil cylinder (6) is fixedly connected to the agricultural machinery bracket (8).

6. The front drive axle assembly for a tractor specifically designed for small-row planting according to claim 4, characterized in that: The inward-retracting structure of the steering knuckle housing (3) is as follows: the main body of the steering knuckle housing (3) extends inclinedly from the connection point with the bridge short section (2) towards the longitudinal centerline of the central reducer assembly (1), so that the mounting center of the connecting flange at the end for connecting the end reducer assembly (4) is set closer to the center of the bridge body.

7. The front drive axle assembly for a tractor specifically designed for small-row planting according to claim 6, characterized in that: An auxiliary steering arm (9) is provided on the outer wall of the steering knuckle housing (3), and the auxiliary steering arm (9) is located on the inner side of the steering knuckle housing (3) near the tilt angle. The free end of the tie rod (7) is hinged to the auxiliary steering arm (9).

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