CN218897557U

CN218897557U - Auxiliary steering travelling mechanism of harvester

Info

Publication number: CN218897557U
Application number: CN202223188640.9U
Authority: CN
Inventors: 徐海港; 张铁柱; 耿端阳; 王新军; 李光杰; 张在静
Original assignee: Gaotang Agricultural Vehicle Factory; Shandong Shifeng Commercial Vehicle Co ltd; Shandong Shifeng Group Co Ltd
Current assignee: Gaotang Agricultural Vehicle Factory; Shandong Shifeng Commercial Vehicle Co ltd; Shandong Shifeng Group Co Ltd
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2023-04-25
Anticipated expiration: 2032-11-30

Abstract

The utility model discloses an auxiliary steering travelling mechanism of a harvester, and belongs to the technical field of harvesters. The harvester comprises a large oil cylinder, a small oil cylinder, a U-shaped support arm and guide wheels, wherein the large oil cylinder is vertically connected below a frame between a left front wheel and a right front wheel of the harvester, two symmetrically arranged pin shafts are fixed on two sides of the outer portion of a cylinder barrel of the large oil cylinder, the two support arms of the U-shaped support arm are respectively connected with the pin shafts on two sides of the large oil cylinder in a rotating mode, the lower end of the U-shaped support arm is connected with the rotatable guide wheels, one end of the small oil cylinder is connected with the U-shaped support arm, and the other end of the small oil cylinder is connected with the harvester. The utility model has simple structure, can realize small turning radius, can provide minimum turning radius under the condition of not stopping harvesting operation, improves the harvesting efficiency, saves time, has convenient turning operation and high efficiency, and reduces the operation intensity of a driver.

Description

Auxiliary steering travelling mechanism of harvester

Technical Field

The utility model relates to a steering device of a combine harvester, and belongs to the technical field of the combine harvester.

Background

At present, no matter the combine harvester is a two-row or multi-row harvesting mechanism, a four-wheel drive mechanism is mostly adopted, namely, the four-wheel drive mechanism is respectively used for inputting and driving to a front shaft and a rear shaft through a gearbox, a steering system is mostly designed on the rear wheels, the rear wheels are small in size, the axle load is small, and the steering is easy. The existing combine harvester, especially more than four lines of machine types, such as six lines, eight lines and ten lines of machine types, has wide vehicle body and large wheel track, so that the steering radius is large, but the steering is still available when the harvester is used for harvesting large plots, but the harvester needs to advance, retract, re-steer, retract, advance and the like when the harvester is used for steering, and the harvester needs to be aligned by multiple times of adjustment, and in addition, the harvesting under a reciprocating type interplanting path cannot be realized due to the large turning radius, so that the harvesting efficiency is affected.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides the auxiliary steering travelling mechanism of the harvester, which has a simple structure and can provide a small turning radius under the condition of not stopping harvesting operation, thereby improving the harvesting efficiency, saving time and reducing the operation strength of a driver.

The utility model is realized by the following technical scheme: an auxiliary steering travelling mechanism of a harvester is characterized in that: the harvester comprises a large oil cylinder, a small oil cylinder, U-shaped support arms and guide wheels, wherein the large oil cylinder is vertically connected below a frame between left and right front wheels of the harvester, two symmetrically arranged pin shafts are fixed on two sides of the outer portion of a cylinder barrel of the large oil cylinder, the two support arms of the U-shaped support arms are respectively connected with the pin shafts on two sides of the large oil cylinder in a rotating mode, the lower ends of the U-shaped support arms are connected with rotatable guide wheels, one end of the small oil cylinder is connected with the U-shaped support arms, and the other end of the small oil cylinder is connected with the harvester.

In the utility model, the U-shaped support arm can rotate around the pin shaft on the large oil cylinder through the small oil cylinder, thereby driving the guide wheel to rotate together. When the harvester is in a normal harvesting state, the small oil cylinder drives the U-shaped support arm to rotate to one side of the large oil cylinder, and the harvester is in a folding state. When the harvester is required to turn, the small oil cylinder pushes the U-shaped support arm to rotate to a vertical position, the guide wheel and the large oil cylinder are coaxial, at the moment, the guide wheel is horizontally consistent with the front wheel and the rear wheel, then the large oil cylinder is started to jack up the front machine body, the front tire is separated from the ground by a certain distance, the guide wheel and the rear double wheels form a three-wheel steering mode, the steering is assisted under the driving of the steering rear wheel of the harvester, and the small-radius steering of the whole harvester is realized. In the steering process, effective work of working parts such as a cutting table, a bridge, a cleaning roller and the like can be still maintained.

Furthermore, the big oil cylinder is a single-acting oil cylinder, and the lower end of the big oil cylinder is of an arc-shaped structure which can be matched with the inner side end of the U-shaped support arm.

Furthermore, the big oil cylinder is a double-acting oil cylinder, and a certain distance is reserved between a piston rod at the lower end of the big oil cylinder and the inner side end of the U-shaped support arm of the U-shaped support.

Furthermore, in order to facilitate bearing and steering, the width of the guide wheel is 250-280mm.

The beneficial effects of the utility model are as follows: the utility model has simple structure, can realize small turning radius, can provide minimum turning radius under the condition of not stopping harvesting operation, improves the harvesting efficiency, saves time, has convenient turning operation and high efficiency, and reduces the operation intensity of a driver. In a non-turning working state, the auxiliary steering travelling mechanism of the harvester is folded, the occupied space is small, and the harvesting operation is not influenced.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a view from the direction A of FIG. 1 (with the U-bracket arms in the vertical position);

FIG. 3 is a schematic diagram of the structure of the present utility model when a double-acting cylinder is used for the large cylinder;

FIG. 4 is a schematic view of the harvester in a normal operating state (the U-shaped bracket arms in a folded state);

FIG. 5 is a schematic view of the harvester in a steering position (with the U-bracket arms in a vertical position);

in the figure: 1. the device comprises a frame, 2, a small oil cylinder, 3, a U-shaped support arm, 4, a guide wheel, 5, a pin shaft, 6, a large oil cylinder, 7, a piston rod I, 8, a piston rod II, 9, an oil inlet I, 10, an oil outlet I, 11, an oil inlet II, 12, an oil outlet II, 13, a transmission shaft I, 14, a gearbox, 15 and a transmission shaft II.

Detailed Description

The utility model is further illustrated by the following non-limiting examples, in conjunction with the accompanying drawings:

as shown in fig. 1, 2, 4 and 5, the auxiliary steering travelling mechanism of the harvester comprises a large oil 6, a small oil cylinder 2, a U-shaped bracket support arm 3 and a guide wheel 4. The large oil cylinder 6 is vertically connected below the frame 1 between the left and right front wheels of the harvester, two symmetrically arranged pin shafts 5 are fixed on two sides of the outer portion of a cylinder barrel of the large oil cylinder 6, pin holes are formed in two support arms of the U-shaped support arm 3, and the two support arms of the U-shaped support arm 3 are respectively connected with the pin shafts 5 on two sides of the large oil cylinder 6 in a rotating mode. The lower end of the U-shaped support arm 3 is connected with a rotatable guide wheel 4 through a support connecting piece, and the width of the guide wheel 4 is preferably 250-280mm. The big oil cylinder 6 is a single-acting oil cylinder, the lower end of the big oil cylinder 6 is of an arc-shaped structure, the inner side end of the U shape of the U-shaped support arm 3 is of an arc-shaped structure, and the radian of the U-shaped support arm is consistent with the radius of gyration of the pin shaft. The small oil cylinder 2 is arranged above the side of the U-shaped support arm 3, one end of the small oil cylinder 2 is connected with the U-shaped support arm 3, and the other end of the small oil cylinder 2 is connected with the harvester. The small oil cylinder 2 can push the U-shaped support arm 3 and the guide wheel 4 to the lower part of the large oil cylinder 6, so that the guide wheel 4 and the large oil cylinder 6 are positioned in a coaxial line. When the oil return of the small oil cylinder 2 is unloaded, the U-shaped support arm 3 and the guide wheel 4 can be rotated to the side of the large oil cylinder 6 to be in a folded state, and the small oil cylinder can be folded to be in a horizontal state or folded to be at a certain angle, so that the harvesting operation is not influenced.

When the utility model is used, the expansion and the reset of the oil cylinder are controlled by the control switch. When the harvester is used for normal harvesting operation, the small oil cylinder 2 drives the U-shaped support arm 3 to rotate to one side of the large oil cylinder 6, and the harvester is in a folded state, so that the harvesting operation is not influenced. When the harvester needs to turn, the small oil cylinder 2 pushes the U-shaped support arm 3 to rotate to a vertical position, the guide wheel 4 and the large oil cylinder 6 are coaxial, at the moment, the guide wheel 4 is horizontally consistent with the front and rear wheels of the harvester, after the large oil cylinder 6 is started, the front machine body of the harvester is jacked up, the front tire is a certain distance of 10-15mm from the ground, the guide wheel 4 and the rear double wheels of the harvester form a three-wheel steering mode, the steering is assisted under the driving of the steering rear wheels of the harvester, and the small-radius steering of the whole harvester is realized. And after the steering is finished, resetting the large oil cylinder and the small oil cylinder. In the steering process, effective work of working parts such as a cutting table, a bridge, a cleaning roller and the like can be still maintained.

In the above embodiment, the large oil cylinder 6 is a single-acting oil cylinder, and the large oil cylinder 6 may also be a double-acting oil cylinder, as shown in fig. 3, where the large oil cylinder 6 is a double-acting oil cylinder, and a certain distance is formed between a piston rod at the lower end of the large oil cylinder 6 and the inner side end of the U-shape support arm 3, so that rotation control is facilitated. When the oil inlet of the large oil cylinder 6 is filled with oil to form high pressure, the double-acting oil cylinder extends bidirectionally to jack up the front part of the harvester, the guide wheel 4 is grounded, and the steering is assisted under the driving of the steering rear wheel of the whole harvester.

The oil cylinder pipeline and the oil tank can be shared with the hydrostatic drive system of the whole machine, and the configuration can be simplified.

The utility model has simple structure, can realize small turning radius, can provide minimum turning radius under the condition of not stopping harvesting operation, improves harvesting efficiency, saves time and can reduce operation intensity of a driver.

Other parts in this embodiment are all of the prior art, and are not described herein.

Claims

1. An auxiliary steering travelling mechanism of a harvester is characterized in that: the harvester comprises a large oil cylinder, a small oil cylinder, U-shaped support arms and guide wheels, wherein the large oil cylinder is vertically connected below a frame between left and right front wheels of the harvester, two symmetrically arranged pin shafts are fixed on two sides of the outer portion of a cylinder barrel of the large oil cylinder, the two support arms of the U-shaped support arms are respectively connected with the pin shafts on two sides of the large oil cylinder in a rotating mode, the lower ends of the U-shaped support arms are connected with rotatable guide wheels, one end of the small oil cylinder is connected with the U-shaped support arms, and the other end of the small oil cylinder is connected with the harvester.

2. The harvester-assisted steering travelling mechanism of claim 1, wherein: the large oil cylinder is a single-acting oil cylinder, and the lower end of the large oil cylinder is of an arc-shaped structure which can be matched with the U-shaped inner side end of the U-shaped support arm.

3. The harvester-assisted steering travelling mechanism of claim 1, wherein: the large oil cylinder is a double-acting oil cylinder, and a certain distance is reserved between a piston rod at the lower end of the large oil cylinder and the inner side end of the U-shaped support arm of the U-shaped support.

4. The harvester-assisted steering travelling mechanism of claim 1 or 2, wherein: the width of the guide wheel is 250-280mm.