Rear wheel steering device for large square bundle

Abstract

A rear wheel steering device for a large square bundle comprises a main shaft, a steering oil cylinder, an axle connecting rod, two arm sleeve plates and two connecting pieces of the same structure, the arm sleeve plates are fixed to the two ends of the main shaft, one end of each arm sleeve plate is connected into one end of the corresponding connecting piece in a sleeved mode, and the middle of each connecting piece is perpendicularly welded to an axle. The two arm sleeve plates and the two connecting pieces are symmetrically arranged relative to the main shaft, one end of a cylinder body of the steering oil cylinder is hinged to the main shaft, the telescopic end of the steering oil cylinder is hinged to the other ends of the connecting pieces, the bridge connecting rod is parallel to the main shaft, and the two ends of the bridge connecting rod are hinged to the other ends of the corresponding connecting pieces respectively. Left angle deviation or right angle deviation of the wheel shaft is controlled by controlling retraction and extension of the telescopic end of the steering oil cylinder and integrated synchronous transmission, and steering of the rear wheel is achieved. The steering efficiency is effectively adjusted, the operation difficulty is reduced, and the operation efficiency is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of baling machine technology, specifically to a rear wheel steering device for large square balers. Background Technology

[0002] Large square balers play a vital role in agricultural industrialization, especially in the large-scale collection and baling of agricultural byproducts such as straw and forage, where operational efficiency and reliability are key factors. With the increasing application of large square balers, their steering operation directly determines the ease of operation in the field, making it a crucial design element for achieving high-efficiency operation. However, existing steering components have numerous transmission parts, leading to insufficient steering stability, inadequate steering sensitivity, and operational difficulties in the face of variable agricultural environments. Therefore, this utility model presents a large square baler steering device designed to improve both stability and ease of use. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the purpose of this utility model is to provide a rear wheel steering device for large square balers, solving the technical problems of stability and convenience in rear wheel steering of balers.

[0004] This utility model is achieved through the following technical solution:

[0005] A rear wheel steering device with a large square frame includes a main shaft, a steering cylinder, a bridge connecting rod, two arm sleeves, and two connecting parts with the same structure. Arm sleeves are fixed to both ends of the main shaft. One end of each arm sleeve is fitted onto one end of a connecting part. The middle part of the connecting part is vertically welded to the wheel axle. The two arm sleeves and the two connecting parts are symmetrically arranged about the main shaft. One end of the cylinder body of the steering cylinder is hinged to the main shaft, and the telescopic end of the steering cylinder is hinged to the other end of the connecting part. The bridge connecting rod is arranged parallel to the main shaft, and its two ends are respectively hinged to the other ends of the corresponding connecting parts.

[0006] Preferably, the connecting component includes two rotating booms, a shaft connecting plate, a connecting rod mounting plate, a flanged pin, and an arc-shaped support plate. The two rotating booms are symmetrically welded to the upper half of the shaft connecting plate. The two rotating booms are coaxially provided with pin holes. The flange end of the flanged pin is fixed to one of the pin holes, and the other end of the flanged pin passes through the other pin hole and is fixed with a nut. The shaft connecting plate is provided with a shaft hole into which a wheel axle is inserted and welded for fixation. The lower half of the shaft connecting plate is welded with a connecting rod mounting plate. The connecting rod mounting plate is set perpendicular to the flanged pin. An arc-shaped support plate is welded to the arc-shaped end face of the connecting rod mounting plate. The end of the connecting rod mounting plate away from the root is constructed as two connecting claws. The two connecting claws are coaxially provided with connecting holes, and a pin is provided between them. Collars are welded to the telescopic end of the steering cylinder and both ends of the bridge connecting rod. The collars are fitted onto the corresponding pins.

[0007] Preferably, straight stiffeners are welded between the roots of the connecting rod mounting plates, and angle stiffeners are welded between the two connecting claws of the connecting rod mounting plates.

[0008] Preferably, the angle between the centerline of the rotating boom and the surface of the shaft connecting plate is 10°.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] This invention redesigns the steering structure of a baler, focusing on improvements to the steering cylinder and connecting parts. Identical connecting parts are hinged to both ends of the main shaft, with the middle of each connecting part welded to the wheel axle. A steering cylinder is hinged to the middle of the main shaft, its telescopic end hinged to the connecting claw portion of the connecting part, which in turn is hinged to both ends of the bridge connecting rod. Therefore, by controlling the retraction and extension of the steering cylinder's telescopic end, a synchronized transmission controls the left or right angular offset of the wheel axle, achieving rear wheel steering. This effectively adjusts steering efficiency and improves the stability and ease of rear wheel steering. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the rear wheel steering device of the large square bundle of this utility model;

[0013] Figure 2 This is a schematic diagram of the rear wheel steering device of the large square bundle of this utility model rotating to the left;

[0014] Figure 3 This is a schematic diagram of the rear wheel steering device of the large square bundle of this utility model rotating to the right;

[0015] Figure 4 This is a schematic diagram of the bridge connecting rod of this utility model;

[0016] Figure 5 This is a three-dimensional structural diagram of the connector of this utility model welded to the wheel axle;

[0017] Figure 6 This is a side view of the connecting component of this utility model welded to the wheel axle.

[0018] The components include: main shaft 1, steering cylinder 2, bridge connecting rod 3, boom sleeve plate 4, connecting piece 5, pin hole 50101, rotating boom 501, shaft connecting plate 502, connecting rod mounting plate 503, connecting claw 50301, connecting hole 50302, flanged pin 504, arc-shaped support plate 505, angle rib plate 506, straight rib plate 507, collar 6, wheel axle 7, and rear wheel 8. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0020] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0021] The technical solution of this utility model will be further described below with reference to the accompanying drawings. Figure 1-6A rear wheel steering device with a large square frame is shown, including a main shaft 1, a steering cylinder 2, a bridge connecting rod 3, two arm sleeves 4, and two connecting parts 5 with the same structure. Arm sleeves 4 are fixed at both ends of the main shaft 1. One end of the arm sleeve 4 is connected to one end of the connecting part 5. The middle part of the connecting part 5 is vertically welded to the wheel axle 7. The two arm sleeves 4 and the two connecting parts 5 are symmetrically arranged about the main shaft 1. One end of the cylinder body of the steering cylinder 2 is hinged to the main shaft 1, and the telescopic end of the steering cylinder 2 is hinged to the other end of the connecting part 5. The bridge connecting rod 3 is arranged parallel to the main shaft 1, and its two ends are respectively hinged to the other end of the corresponding connecting part 5. Both ends of the main shaft are hinged with connectors of the same structure. The middle part of the connector is welded to the wheel axle. A steering cylinder 2 is hinged to the middle of the main shaft 1. Its telescopic end is hinged to the connecting claw 50301 of the connector 5. The connecting claw 50301 of the connector 5 is hinged to both ends of the bridge connecting rod 3. Therefore, by controlling the retraction and extension of the telescopic end of the steering cylinder 2, the left or right angle offset of the wheel axle 7 is controlled by the integrated synchronous transmission, thereby realizing the steering of the rear wheel 8. This effectively adjusts the steering efficiency, reduces the difficulty of operation, and significantly improves the work efficiency.

[0022] like Figure 5 and Figure 6 The connecting component 5 includes two rotating booms 501, a shaft connecting plate 502, a connecting rod mounting plate 503, a flanged pin 504, and an arc-shaped support plate 505. The two rotating booms 501 are symmetrically welded to the upper half of the shaft connecting plate 502. Pin holes 50101 are coaxially formed on the two rotating booms 501. The flange end of the flanged pin 504 is fixed to one of the pin holes 50101, and the other end of the flanged pin 504 passes through the other pin hole 50101 and is secured with a nut. The shaft connecting plate 502... A shaft hole is provided, into which a wheel axle 7 is inserted and welded for fixation. A connecting rod mounting plate 503 is welded to the lower half of the shaft connecting plate 502. The connecting rod mounting plate 503 is set perpendicular to the flanged pin shaft 504. An arc-shaped support plate 505 is welded to the arc-shaped end face of the connecting rod mounting plate 503. The end of the connecting rod mounting plate 503 furthest from the root is constructed with two connecting claws 50301. Connecting holes 50302 are coaxially formed on the two connecting claws 50301, with a pin shaft between them. A collar 6 is welded to the telescopic end of the steering cylinder 2. Figure 4 Both ends of the bridge connecting rod 3 are also welded with collars 6, and the collars 6 are all fitted onto the corresponding pins.

[0023] To reinforce the structure of the connector 5, straight stiffeners 507 are welded between the roots of the connecting rod mounting plates 503, and angle stiffeners 506 are welded between the two connecting claws 50301 of the connecting rod mounting plates 503.

[0024] When machining the connecting part 5, an angle will be formed between its rotating arm 501 and the shaft connecting plate 502 so that the main shaft 1 and the wheel axle 7 can be misaligned. In the actual machining and production process, the angle between the center line of the rotating arm 501 and the plate surface of the shaft connecting plate 502 is designed to be 10°.

[0025] The working principle of this utility model:

[0026] like Figure 1 When stationary, the steering cylinder 2 is locked, and the center of the steering linkage 3 is kept on the wheel axle centerline, at which time the rear wheel 8 can travel in a straight line;

[0027] like Figure 2 In the left-turn state, the extension end of the steering cylinder 2 retracts, thereby stretching the connecting claw 50301 on the left connecting piece 5, causing its outer angle to shift to the right, which in turn drives the connecting claw 50301 on the right connecting piece 5 to shift to the right angle, thus realizing the overall left-turn state of the rear wheel 8.

[0028] like Figure 3 In the right turn state, the extension end of the steering cylinder 2 extends and presses against the connecting claw 50301 on the left connecting piece 5, causing its outer angle to shift to the left, which in turn causes the center of the bridge connecting rod 3 to shift to the left, thereby causing the connecting claw 50301 on the right connecting piece 5 to shift to the left angle, thus realizing the overall right turn state of the rear wheel 8.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rear wheel steering device for a large square bundle, characterized in that: The system includes a main shaft (1), a steering cylinder (2), a bridge connecting rod (3), two arm sleeves (4), and two connecting parts (5) with the same structure. Both ends of the main shaft (1) are fixed with arm sleeves (4). One end of the arm sleeve (4) is fitted into one end of the connecting part (5). The middle part of the connecting part (5) is vertically welded to the wheel axle (7). The two arm sleeves (4) and the two connecting parts (5) are symmetrically arranged about the main shaft (1). One end of the cylinder body of the steering cylinder (2) is hinged to the main shaft (1), and the telescopic end of the steering cylinder (2) is hinged to the other end of the connecting part (5). The bridge connecting rod (3) is arranged parallel to the main shaft (1), and its two ends are respectively hinged to the other end of the corresponding connecting part (5).

2. The rear wheel steering device of the large square bundle according to claim 1, characterized in that: The connector (5) includes two rotating booms (501), a shaft connecting plate (502), a connecting rod mounting plate (503), a flanged pin (504), and an arc-shaped support plate (505). The two rotating booms (501) are symmetrically welded to the upper half of the shaft connecting plate (502). The two rotating booms (501) are coaxially provided with pin holes (50101). The flange end of the flanged pin (504) is fixed to one of the pin holes (50101), and the other end of the flanged pin (504) passes through the other pin hole (50101) and is fixed with a nut. The shaft connecting plate (502) is provided with a shaft hole into which a wheel axle (7) is inserted. The shaft connecting plate (502) is welded to the lower half of the shaft connecting plate (502) and a connecting rod mounting plate (503) is welded to it. The connecting rod mounting plate (503) is set perpendicular to the flanged pin (504). An arc-shaped support plate (505) is welded to the arc-shaped end face of the connecting rod mounting plate (503). The end of the connecting rod mounting plate (503) away from the root is constructed as two connecting claws (50301). The two connecting claws (50301) are coaxially provided with connecting holes (50302), and a pin is provided between them. A collar (6) is welded to the telescopic end of the steering cylinder (2) and both ends of the bridge connecting rod (3). The collar (6) is sleeved on the corresponding pin.

3. The rear wheel steering device of the large square bundle according to claim 2, characterized in that: Straight ribs (507) are welded between the roots of the connecting rod mounting plate (503), and angle ribs (506) are welded between the two connecting claws (50301) of the connecting rod mounting plate (503).

4. The rear wheel steering device of the large square bundle according to claim 2, characterized in that: The angle between the centerline of the rotating boom (501) and the surface of the shaft connecting plate (502) is 10°.

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