A hydraulic drive device for a corn header

Abstract

The application provides a hydraulic drive device for a corn header, comprising a walking pump insertion pump, a cooler, a header motor control valve, a speed regulating valve, a BM series cycloid motor, a steering control multi-way valve, a main clutch oil cylinder, an engine insertion pump and a hydraulic oil tank; the device drives the header through an independent hydraulic control circuit; the application uses a current walking system hydraulic pump drive shaft, inserts an independent gear pump, drives the cycloid motor through the gear pump, connects the cycloid motor with a header main drive shaft, and realizes stable transmission of hydraulic power. The hydraulic system realizes overload protection through pressure regulation, the impact of overload caused by blockage is small, mechanical parts are effectively protected, and the service life of the parts is prolonged. The hydraulic drive is easy to realize electro-hydraulic control, the reverse rotation of the motor can realize the "reverse discharge" of the blocked material, the blocked material can be quickly removed, time and labor are saved, and the work efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery, specifically to a hydraulic drive device for a corn harvester used in corn ear picking operations. Background Technology

[0002] In corn harvesting machinery, the process of separating the ears from the plant and transferring them to the ear conveyor is completed by the header. The harvested ears are then pushed to the husk-removing mechanism by a chain rake elevator. After husk removal, the ears are tossed into the grain bin, completing the harvest. Conventional headers use mechanical drives, with belts or chains transmitting power from the engine's main shaft to the header's drive shaft. The drive shaft then distributes power to the header's transmission box and the feeding auger, enabling the header to perform ear picking, conveying, and feeding operations. However, mechanical drives suffer from drawbacks such as complex structures, long transmission routes, difficulty in adjustment, and the inability to reverse to clear blockages, resulting in a high failure rate and time-consuming and labor-intensive adjustments and repairs. Furthermore, the header's safety clutch has low mechanical sensitivity; under sudden increases in workload, it may fail to disengage promptly, leading to blockages and damage. Repairing or replacing the safety clutch incurs high downtime costs, further reducing harvesting efficiency. Utility Model Content

[0003] The purpose of this utility model is achieved through the following technical measures: a hydraulic drive device for a corn harvesting platform, comprising: a travel pump, a cooler, a header motor control valve, a speed control valve, a BM series cycloidal motor, a control multi-way valve, a main clutch cylinder, an engine pump, and a hydraulic oil tank.

[0004] The device drives the cutting table through an independent hydraulic control circuit, wherein:

[0005] The travel pump is connected to the travel pump via a gear pump, serving as the hydraulic power source for the cutting table.

[0006] The BM series cycloidal motor directly drives the main drive shaft of the cutting table;

[0007] The cutting table motor control valve electrically controls the forward and reverse rotation of the BM series cycloidal motor.

[0008] As a preferred embodiment: the cutting table motor control valve includes coil a and coil b;

[0009] When coil a is energized, the BM series cycloidal motor rotates forward, and the header performs the ear-picking operation;

[0010] When coil b is energized, the BM series cycloidal motor reverses, causing material to be expelled to clear blockages.

[0011] As a preferred embodiment, the speed control valve is connected in series in the oil circuit between the cutter motor control valve and the BM series cycloidal motor, and the motor speed is controlled by adjusting the flow rate.

[0012] As a preferred embodiment, the cooler is connected in series in the main oil circuit of the hydraulic circuit to reduce the operating temperature of the hydraulic oil.

[0013] As a preferred embodiment: the operating control multi-way valve includes a main clutch disc valve;

[0014] When the coil of the main clutch disc valve is energized, its A port oil circuit is connected, driving the main clutch cylinder to engage the main clutch;

[0015] Simultaneously, the coil of the control valve of the header motor is energized through electrical linkage, starting the header to rotate forward.

[0016] As a preferred embodiment, the engine pump is installed in the engine to provide a pressurized oil source for operating the multi-way valve.

[0017] As a preferred solution: the actions of the header, the reamer, and the peeler are synchronized via electrical linkage.

[0018] When the main clutch engagement button is pressed, the coil b of the operating control multi-way valve and the coil a of the cutter motor control valve are energized simultaneously.

[0019] Due to the adoption of the above technical solution, the advantages of this utility model compared with the prior art are:

[0020] The cutting table feeding transmission is smooth, with minimal overload impact, reducing the failure rate;

[0021] It enables the header to "reverse discharge" to facilitate the clearing of blocked materials;

[0022] Hydraulic transmission has less overload impact, reducing the failure rate;

[0023] Electronically controlled reverse rotation enables rapid blockage removal;

[0024] Electrical linkage ensures that the header operates synchronously with the reamer and peeler;

[0025] This application utilizes the existing hydraulic pump drive shaft of the walking system, and inserts an independent gear pump. The gear pump drives a cycloidal motor, which is connected to the main drive shaft of the cutting table, achieving smooth transmission of hydraulic power. Because the hydraulic system achieves overload protection through pressure regulation, the impact of overload caused by blockage is minimized, effectively protecting mechanical parts and extending their service life. Since hydraulic drive is easily electro-hydraulic controlled, in case of overload blockage, the motor can be reversed to "reverse" the blocked material, achieving rapid blockage removal, saving time and labor, and improving work efficiency.

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0027] Appendix Figure 1 This is a schematic diagram of the hydraulic principle of this utility model. Detailed Implementation

[0028] Example: As attached Figure 1 As shown, a hydraulic drive device for a corn header in corn harvesting operations includes: a travel pump 1, a cooler 2, a header motor control valve 3, a speed control valve 4, a BM series cycloidal motor 5, a multi-way control valve 6, a main clutch cylinder 7, an engine pump 8, and a hydraulic oil tank 9; the device drives the header through an independent hydraulic control circuit, wherein:

[0029] The travel pump insert pump 1 is connected to the travel pump insert gear pump, serving as the hydraulic power source for the cutting table;

[0030] The BM series cycloidal motor 5 directly drives the main drive shaft of the cutting table;

[0031] The cutting table motor control valve 3 controls the forward and reverse rotation of the BM series cycloidal motor 5.

[0032] The cutting table motor control valve 3 includes coil a and coil b;

[0033] When coil a is energized, the BM series cycloidal motor 5 rotates forward, and the header performs the ear-picking operation;

[0034] When coil b is energized, the BM series cycloidal motor 5 reverses, enabling material to be expelled to clear blockages.

[0035] The speed control valve 4 is connected in series in the oil circuit between the header motor control valve 3 and the BM series cycloidal motor 5, and controls the motor speed by adjusting the flow rate.

[0036] The cooler 2 is connected in series in the main oil circuit of the hydraulic circuit to reduce the working temperature of the hydraulic oil.

[0037] The operating control multi-way valve 6 includes a main clutch disc valve;

[0038] When the coil b1 of the main clutch disc valve is energized, its A1 port oil circuit is connected, driving the main clutch cylinder 7 to engage the main clutch;

[0039] At the same time, the coil a of the cutting table motor control valve 3 is energized through electrical linkage control, starting the cutting table to rotate forward.

[0040] The engine pump 8 is installed on the engine and provides a pressurized oil source for operating and controlling the multi-way valve 6.

[0041] The synchronized movement of the header, the reamer, and the peeler is achieved through electrical linkage:

[0042] When the main clutch engagement button is pressed, the coil b1 of the operating control multi-way valve 6 and the coil a of the cutting table motor control valve 3 are energized simultaneously.

[0043] Combination Figure 1 Workflow description:

[0044] Normal operation:

[0045] Press the main clutch button → the coil b1 of the multi-way valve 6 is energized → the main clutch cylinder 7 engages;

[0046] At the same time, the coil a of the cutting table motor control valve 3 is energized, and the BM series cycloidal motor 5 rotates forward to perform ear picking.

[0047] Unblocking procedure:

[0048] Triggering the reverse switch of the cutting table → the b coil of the cutting table motor control valve 3 is energized → the BM series cycloidal motor 5 reverses → material is discharged back.

[0049] Speed ​​control and cooling:

[0050] Speed ​​control valve 4 allows manual adjustment of flow rate to change the cutting table speed; cooler 2 continuously dissipates heat to ensure stable oil temperature.

[0051] The core is an independent hydraulic circuit:

[0052] Power transmission: The travel pump 1 supplies oil to the header motor control valve 3, which drives the BM series cycloidal motor 5 to drive the header;

[0053] Direction control: When coil a of the header motor control valve 3 is energized, the motor rotates forward to pick ears of grain; when coil b is energized, the motor rotates in reverse to discharge material.

[0054] Speed ​​regulation: Speed ​​control valve 4 controls the motor speed through flow rate;

[0055] Overheat protection: Cooler 2 reduces hydraulic oil temperature;

[0056] Multi-mechanism linkage: The multi-way valve 6 controls the main clutch cylinder 7, and when the main clutch is engaged, the cutting table rotates forward synchronously.

Claims

1. A hydraulic drive device for a corn harvester in corn ear-picking operations, characterized in that, include: Walking pump (1), cooler (2), cutting table motor control valve (3), speed control valve (4), BM series cycloidal motor (5), operating control multi-way valve (6), main clutch cylinder (7), engine pump (8), hydraulic oil tank (9); The device drives the cutting table through an independent hydraulic control circuit, wherein: The travel pump insert pump (1) is connected to the travel pump insert gear pump and serves as the hydraulic power source for the cutting table; The BM series cycloidal motor (5) directly drives the main drive shaft of the cutting table; The cutting table motor control valve (3) controls the forward and reverse rotation of the BM series cycloidal motor (5).

2. The hydraulic drive device for a corn harvester as described in claim 1, characterized in that, The cutting table motor control valve (3) includes coil a and coil b; When coil a is energized, the BM series cycloidal motor (5) rotates in the forward direction, and the header performs the ear-picking operation; When coil b is energized, the BM series cycloidal motor (5) reverses to achieve material backflow to remove blockage.

3. The hydraulic drive device for a corn harvester as described in claim 1, characterized in that, The speed control valve (4) is connected in series in the oil circuit between the cutting table motor control valve (3) and the BM series cycloidal motor (5), and controls the motor speed by adjusting the flow rate.

4. A hydraulic drive device for a corn harvester as described in claim 1, characterized in that, The cooler (2) is connected in series in the main oil circuit of the hydraulic circuit to reduce the working temperature of the hydraulic oil.

5. A hydraulic drive device for a corn harvester as described in claim 1, characterized in that, The operating control multi-way valve (6) includes a main clutch disc valve; When the coil b1 of the main clutch disc valve is energized, its A1 port oil circuit is connected, driving the main clutch cylinder (7) to engage the main clutch; At the same time, the coil a of the cutting table motor control valve (3) is energized through electrical linkage control, and the cutting table starts to rotate forward.

6. A hydraulic drive device for a corn harvester as described in claim 1, characterized in that, The engine pump (8) is installed on the engine and provides a pressurized oil source for operating the multi-way valve (6).

7. A hydraulic drive device for a corn harvester as described in any one of claims 1 to 6, characterized in that, The actions of the header, the reamer, and the peeler are synchronized through electrical linkage: When the main clutch engagement button is pressed, the coil b1 of the operating control multi-way valve (6) and the coil a of the cutting table motor control valve (3) are energized simultaneously.

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