阅读说明：本技术 一种农业机械后悬挂自动调平装置 (Agricultural machine rear suspension automatic leveling device ) 是由 杜娟 印祥 安家豪 王艳鑫 金诚谦 耿端阳 于 2020-08-03 设计创作，主要内容包括：本发明公开一种农业机械后悬挂自动调平装置,包括陀螺仪、用于带动农具进行车身纵向方向上调平的上调平油缸和用于带动农具进行水平方向上调平的侧调平机构；侧调平机构内设置有侧调平油缸,上调平油缸和侧调平油缸均由电磁换向阀控制进出油；陀螺仪用于接收悬挂农具在田间工作时倾斜产生的角度,并将控制信号输出至电机驱动器,由电机驱动器控制各电磁换向阀的开关。本发明能够有效的运用于农业机械,在田间作业时保持悬挂农具的水平运作,调平精度高,结构紧凑,通过调整悬挂农具在横向和纵向的角度,从而可以控制悬挂农具的耕深,满足农业机械的工作要求,实用性强。(The invention discloses an automatic leveling device for a rear suspension of agricultural machinery, which comprises a gyroscope, an upper leveling oil cylinder and a side leveling mechanism, wherein the upper leveling oil cylinder is used for driving an agricultural tool to level in the longitudinal direction of a vehicle body; a side leveling oil cylinder is arranged in the side leveling mechanism, and the upper leveling oil cylinder and the side leveling oil cylinder are controlled by an electromagnetic directional valve to enter and exit oil; the gyroscope is used for receiving an angle generated by inclination of the suspended farm tool during field work, outputting a control signal to the motor driver, and controlling the on-off of each electromagnetic directional valve by the motor driver. The agricultural machine leveling device can be effectively applied to agricultural machinery, the horizontal operation of the suspended agricultural implement is kept during field operation, the leveling precision is high, the structure is compact, the tilling depth of the suspended agricultural implement can be controlled by adjusting the transverse and longitudinal angles of the suspended agricultural implement, the working requirement of the agricultural machinery is met, and the practicability is high.)

1. The utility model provides a hang automatic levelling device behind agricultural machine which characterized in that: the device comprises a gyroscope, an upper leveling oil cylinder and a side leveling mechanism, wherein the upper leveling oil cylinder is used for driving the farm tool to level the vehicle body in the longitudinal direction; a side leveling oil cylinder is arranged in the side leveling mechanism, and the upper leveling oil cylinder and the side leveling oil cylinder are controlled by an electromagnetic directional valve to enter and exit oil; the gyroscope is used for receiving an angle generated by inclination of the suspended farm tool during field work, outputting a control signal to the motor driver, and controlling the on-off of each electromagnetic directional valve by the motor driver.

2. The agricultural machine rear suspension automatic leveling device according to claim 1, characterized in that: one end of the upper leveling oil cylinder is hinged to the rear part of the agricultural machine, and the other end of the upper leveling oil cylinder is connected with an agricultural implement in a hanging mode.

3. The agricultural machine rear suspension automatic leveling device according to claim 1, characterized in that: the side leveling mechanism comprises a lifting arm, a lifting oil cylinder, a leveling oil cylinder and a lower pull rod; one end of the lifting arm is hinged to the rear part of the agricultural machine, and the other end of the lifting arm is hinged to one end of the leveling oil cylinder; one end of the lifting oil cylinder is hinged to the middle part of the lifting arm, and the other end of the lifting oil cylinder is hinged to the rear part of the agricultural machine; one end of the lower pull rod is hinged to the rear part of the agricultural machine, and the other end of the lower pull rod is connected with an agricultural implement in a hanging mode; the other end of the leveling oil cylinder is hinged to the middle of the lower pull rod.

4. The agricultural machine rear suspension automatic leveling device according to claim 3, characterized in that: the lifting arm shaft is hinged to the rear part of the agricultural machine; and two ends of the lifting arm shaft are connected with a group of side leveling mechanisms.

5. The agricultural machine rear suspension automatic leveling device according to claim 4, characterized in that: and two ends of the lifting arm shaft are respectively fixedly connected with the end part of one lifting arm.

6. An agricultural machine rear suspension auto-leveling device according to claim 1 or 2, wherein: and the upper leveling oil cylinder is connected with a hydraulic system of the agricultural machine through a front electromagnetic directional valve and a rear electromagnetic directional valve.

7. The agricultural machine rear suspension automatic leveling device according to claim 3, characterized in that: and the leveling oil cylinder is connected with a hydraulic system of the agricultural machine through a left electromagnetic directional valve and a right electromagnetic directional valve.

8. The agricultural machine rear suspension automatic leveling device according to claim 3, characterized in that: the lifting oil cylinder is connected with a hydraulic system of the agricultural machine through a lifting electromagnetic directional valve.

9. The agricultural machine rear suspension automatic leveling device according to claim 1, characterized in that: the gyroscope is installed on the suspended farm tool.

10. The agricultural machine rear suspension automatic leveling device according to claim 1, characterized in that: the agricultural machine is a tractor.

Technical Field

The invention relates to the field of automatic control of agricultural equipment, in particular to an automatic leveling device for a rear suspension of agricultural machinery.

Background

Because the field depression in farmland is uneven, the automobile body can not keep level when agricultural machine works in the field, and the agricultural implement that hangs also produces the slope. The automatic horizontal suspension device can ensure that the suspended farm tool can still keep horizontal work under the condition that the vehicle body is inclined, thereby improving the farm field operation quality and reducing the frequency of frequently and stably adjusting operation by operators; meanwhile, the phenomenon that the stress is uneven due to the fact that the internal structure of the farm tool is in an inclined state is also prevented, and the tension rod is broken when the stress exceeds the designed load. Patent No. 201410360990.X discloses a four-way balance mechanism of a rotary cultivator and a control method thereof, wherein a method of replacing one lifting rod with a balance oil cylinder is adopted, and horizontal control of suspended farm implements can be realized in the working principle. However, when the agricultural machine works, the small-amplitude vibration of the agricultural machine cannot be avoided, and the balance effect is greatly influenced and the balance precision is lowered due to the fact that only one balance oil cylinder is arranged.

At present, with the continuous development of intelligent agriculture and precision agriculture, the rear suspension automatic horizontal device of the agricultural machine becomes one of the basic functions of the agricultural machine. However, many automated horizontal methods or devices cannot be applied to the rear suspension mechanism due to the complex terrain in the field and the factors of the agricultural machinery itself. Therefore, how to improve the automatic level adjustment function of the suspended farm tool so that the rear suspended automatic level device of the agricultural machine can quickly level any suspended farm tool is a problem to be solved in the invention.

Disclosure of Invention

The invention aims to provide an automatic leveling device for a rear suspension of agricultural machinery, aiming at the defects that the field conditions are complex, the suspended agricultural implement cannot be kept in horizontal operation, the working efficiency is low and the prior art is not perfect, the automatic leveling device can be effectively applied to the agricultural machinery, can keep the horizontal operation of the suspended agricultural implement during the field operation, has high leveling precision and compact structure, and can control the tilling depth of the suspended agricultural implement and meet the working requirements of the agricultural machinery by adjusting the transverse and longitudinal angles of the suspended agricultural implement.

In order to achieve the purpose, the invention provides the following scheme:

the invention provides a rear suspension automatic leveling device of agricultural machinery, which comprises a gyroscope, an upper leveling oil cylinder and a side leveling mechanism, wherein the upper leveling oil cylinder is used for driving an agricultural tool to level in the longitudinal direction of a vehicle body; a side leveling oil cylinder is arranged in the side leveling mechanism, and the upper leveling oil cylinder and the side leveling oil cylinder are controlled by an electromagnetic directional valve to enter and exit oil; the gyroscope is used for receiving an angle generated by inclination of the suspended farm tool during field work, outputting a control signal to the motor driver, and controlling the on-off of each electromagnetic directional valve by the motor driver.

Optionally, one end of the upper leveling cylinder is hinged to the rear portion of the agricultural machine, and the other end of the upper leveling cylinder is connected with an agricultural implement in a hanging mode.

Optionally, the side leveling mechanism comprises a lifting arm, a lifting cylinder, a leveling cylinder and a lower pull rod; one end of the lifting arm is hinged to the rear part of the agricultural machine, and the other end of the lifting arm is hinged to one end of the leveling oil cylinder; one end of the lifting oil cylinder is hinged to the middle part of the lifting arm, and the other end of the lifting oil cylinder is hinged to the rear part of the agricultural machine; one end of the lower pull rod is hinged to the rear part of the agricultural machine, and the other end of the lower pull rod is connected with an agricultural implement in a hanging mode; the other end of the leveling oil cylinder is hinged to the middle of the lower pull rod.

Optionally, the agricultural machinery further comprises a lifting arm shaft, and the lifting arm shaft is hinged to the rear part of the agricultural machinery; and two ends of the lifting arm shaft are connected with a group of side leveling mechanisms.

Optionally, two ends of the lifting arm shaft are respectively fixedly connected with an end of one lifting arm.

Optionally, the upper leveling cylinder is connected with a hydraulic system of the agricultural machine through front and rear electromagnetic directional valves.

Optionally, the leveling cylinder is connected with a hydraulic system of the agricultural machine through a left electromagnetic directional valve and a right electromagnetic directional valve.

Optionally, the lifting oil cylinder is connected with a hydraulic system of the agricultural machine through a lifting electromagnetic directional valve.

Optionally, the gyroscope is mounted on a suspended farm implement.

Optionally, the agricultural machine is a tractor; each leveling oil cylinder is assembled and connected with the rear part of the tractor through a connecting frame.

Compared with the prior art, the invention has the following technical effects:

in the agricultural machinery rear suspension automatic leveling device provided by the invention, after the gyroscope receives an angle generated by inclination of a suspended farm tool during field work, a control signal is output to the motor driver, the motor driver controls the oil inlet and outlet of each leveling oil cylinder by controlling the switch of each electromagnetic directional valve, and when the gyroscope detects that the suspended farm tool is within a horizontal acceptable error, the control of the leveling oil cylinders is stopped. The invention can horizontally adjust the suspended farm tool according to the position relation of four points of the suspended farm tool, so that the suspended farm tool reaches the expected horizontal range.

The invention has the advantages and beneficial effects that:

the oil inlet and outlet of the leveling oil cylinder are controlled by the electromagnetic directional valve, the control method is simple and flexible, and the debugging and installation are convenient, so that the overall cost of the rear suspension automatic leveling device of the agricultural machine can be reduced, and the practical application and the industrialized development of the rear suspension automatic leveling operation of the agricultural machine are promoted;

secondly, the leveling oil cylinder and the rear part of the agricultural machine can be assembled and connected through a connecting frame, so that the structure is compact and the popularization is convenient;

the conversion between manual leveling and automatic leveling can be realized; under emergency, the automatic control can be ended emergently, the angle for suspending the farm tool after manual operation is changed, the overall structure is compact, and the installation method is simple.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic view of the installation structure of the rear suspension automatic leveling device of the agricultural machine of the present invention;

FIG. 2 is a schematic structural diagram of the rear suspension automatic leveling device of the agricultural machine according to the present invention;

FIG. 3 is a connection diagram of a hydraulic oil circuit of the agricultural machine rear suspension automatic leveling device of the present invention;

wherein the reference numerals are: 1. an upper leveling oil cylinder; 2. a right lift arm; 3. a right lift cylinder; 4. a right leveling cylinder; 5. a right lower tie rod; 6. a left lower tie rod; 7. a left leveling cylinder; 8. a left lift arm; 9. a left lift cylinder; 10. a lift arm shaft; 11. a tractor rear; 12-1, front and back electromagnetic directional valves; 12-2, lifting electromagnetic directional valves; 12-3, left and right electromagnetic directional valves; 13. a hydraulic pump; 14. a hydraulic oil tank; 15. an overflow valve; 16. a motor; 17. and a leveling solenoid valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention aims to provide a rear suspension automatic leveling device of agricultural machinery, which can be effectively applied to the agricultural machinery, keeps horizontal operation of suspended agricultural implements during field operation, has high leveling precision and compact structure, and can control the tilling depth of the suspended agricultural implements by adjusting the transverse and longitudinal angles of the suspended agricultural implements so as to meet the working requirements of the agricultural machinery.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.