Hydraulic system for picking and cleaning of pepper harvester

Abstract

The utility model belongs to the technical field of agricultural mechanical equipment, and particularly discloses a hydraulic system for picking and cleaning of a pepper harvester, which comprises a hydraulic oil tank, a picking roller driving motor, a left picking and conveying driving motor, a right picking and conveying driving motor, a cleaning wheel set driving motor, a cleaning fan driving motor, a flushing valve and a plunger variable pump. A high-pressure oil port of the plunger variable pump is connected with an oil inlet of the picking roller driving motor; the picking roller driving motor is connected with the left picking conveying driving motor; the left picking conveying driving motor is connected with the left conveying driving motor speed regulating valve in parallel; the right picking conveying driving motor is connected with the right conveying driving motor speed regulating valve in parallel; the plunger variable pump is connected with the flush valve in parallel; the hydraulic system has the advantages of being compact in structure, small in power loss, high in system integration degree and low in manufacturing cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of agricultural machinery equipment, and particularly relates to a picking, cleaning and selecting hydraulic system for a pepper harvester. Background Art

[0002] Most self-propelled pepper harvesters currently on the market lack a cleaning function and rely on stationary pepper cleaning equipment after harvesting, resulting in low efficiency, complex processes, and high labor requirements. Self-propelled pepper harvesters with cleaning functions, however, have become the most popular and user-recognized products due to their high efficiency and streamlined operation. However, these products place high demands on the precision and convenience of speed control of the various cleaning components. Hydraulic systems, with their flexible layout and convenient control, are one of the most effective ways to achieve this.

[0003] The utility model application discloses a hydraulic system for picking, cleaning and selecting a pepper harvester. The closed system can drive three picking platform motors and two cleaning motors at the same time, and independently adjust the speed of each motor, which is convenient to control; it can better realize the adjustment of the speed control of each component of the pepper harvester cleaning system. Utility Model Content

[0004] In response to the problems existing in the background technology, the utility model provides a hydraulic system for picking, cleaning and selecting a pepper harvester. While adopting a closed hydraulic system to drive the picking platform and the cleaning system, the speed of each motor can be independently adjusted.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a picking, cleaning and selecting hydraulic system for a pepper harvester, comprising a hydraulic oil tank, a picking roller drive motor, a left picking and conveying drive motor, a right picking and conveying drive motor, a cleaning wheel drive motor, a cleaning fan drive motor, a fan drive motor speed regulating valve, a cleaning wheel drive motor speed regulating valve, a right conveying drive motor speed regulating valve, a left conveying drive motor speed regulating valve, a flushing valve and a plunger variable pump, wherein the high-pressure oil port of the plunger variable pump is connected to the oil inlet of the picking roller drive motor; the oil outlet of the picking roller drive motor is connected to the oil inlet of the left picking and conveying drive motor;

[0006] The left picking and conveying drive motor is connected in parallel with the left conveying drive motor speed regulating valve; the oil outlet of the left picking and conveying drive motor and the left conveying drive motor speed regulating valve is connected to the oil inlet of the right picking and conveying drive motor and the right conveying drive motor speed regulating valve;

[0007] The right picking and conveying drive motor is connected in parallel with the right conveying drive motor speed regulating valve; the oil outlet of the right picking and conveying drive motor and the right conveying drive motor speed regulating valve is connected to the oil inlet of the cleaning wheel group drive motor and the cleaning wheel group drive motor speed regulating valve;

[0008] The cleaning wheel drive motor and the cleaning wheel drive motor speed regulating valve are connected in parallel; the oil outlet of the cleaning wheel drive motor and the cleaning wheel drive motor speed regulating valve is connected to the oil inlet of the cleaning fan drive motor and the fan drive motor speed regulating valve;

[0009] The cleaning fan drive motor is connected in parallel with the fan drive motor speed regulating valve; the oil outlets of the cleaning fan drive motor and the fan drive motor speed regulating valve are connected to the low-pressure oil port of the plunger variable pump;

[0010] The plunger variable pump is connected in parallel with the flushing valve;

[0011] The picking roller drive motor, the left picking and conveying drive motor, the right picking and conveying drive motor, the cleaning wheel drive motor, the cleaning fan drive motor and the plunger variable pump are all provided with an oil drain port, which is connected to the hydraulic oil tank.

[0012] After the oil outlet pipeline of the left picking and conveying drive motor is connected to the oil outlet pipeline of the left conveying drive motor speed regulating valve, it is connected to the oil inlet pipeline of the right picking and conveying drive motor and the oil inlet pipeline of the right conveying drive motor speed regulating valve.

[0013] After the oil outlet pipeline of the right picking and conveying drive motor is connected to the oil outlet pipeline of the right conveying drive motor speed regulating valve, it is connected to the oil inlet of the cleaning wheel group drive motor and the oil inlet pipeline of the cleaning wheel group drive motor speed regulating valve.

[0014] After the oil outlet pipeline of the cleaning wheel group driving motor and the oil outlet pipeline of the cleaning wheel group driving motor speed regulating valve are connected, they are connected to the oil inlet of the cleaning fan driving motor and the oil inlet pipeline of the fan driving motor speed regulating valve.

[0015] The fan drive motor speed regulating valve, the cleaning wheel group drive motor speed regulating valve, the right conveying drive motor speed regulating valve and the left conveying drive motor speed regulating valve are all provided with valve cores with adjustable diameters and one-way valves.

[0016] The cleaning fan driving motor is provided with a one-way valve.

[0017] The displacements of the picking roller drive motor, the left picking and conveying drive motor, the right picking and conveying drive motor, the cleaning wheel drive motor and the cleaning fan drive motor are all fixed.

[0018] The hydraulic oil tank and the oil pipeline are provided with a hydraulic oil filter, an air-cooled radiator, and a liquid level and temperature gauge.

[0019] The beneficial effects of the present invention are as follows: the present invention provides a hydraulic system for picking, cleaning and selecting a pepper harvester, which has the characteristics of compact structure, low power loss, high system integration and low manufacturing cost; in the present invention, the speed of each motor can be adjusted independently by adjusting the displacement of the plunger variable pump or the flow of the speed regulating valve block, which is convenient for matching the appropriate motor speed according to the operating conditions, thereby improving the operating adaptability of the whole machine and meeting the needs of actual use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is the main view of the utility model.

[0021] In the figure: 1. Hydraulic oil tank, 2. Picking roller drive motor, 3. Left picking and conveying drive motor, 4. Right picking and conveying drive motor, 5. Cleaning wheel drive motor, 6. Cleaning fan drive motor, 7. Fan drive motor speed control valve, 8. Cleaning wheel drive motor speed control valve, 9. Right conveying drive motor speed control valve, 10. Left conveying drive motor speed control valve, 11. Flushing valve, 12. Plunger variable pump. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the specification. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] The following is a further detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings: A hydraulic system for picking, cleaning and selecting a pepper harvester, comprising a hydraulic oil tank 1, a picking roller drive motor 2, a left picking and conveying drive motor 3, a right picking and conveying drive motor 4, a cleaning wheel drive motor 5, a cleaning fan drive motor 6, a fan drive motor speed regulating valve 7, a cleaning wheel drive motor speed regulating valve 8, a right conveying drive motor speed regulating valve 9, a left conveying drive motor speed regulating valve 10, a flushing valve 11 and a plunger variable pump 12, wherein the high-pressure oil port of the plunger variable pump 12 is connected to the oil inlet of the picking roller drive motor 2; the oil outlet of the picking roller drive motor 2 is connected to the oil inlet of the left picking and conveying drive motor 3;

[0024] The left picking and conveying drive motor 3 is connected in parallel with the left conveying drive motor speed regulating valve 10; after the oil outlet pipeline of the left picking and conveying drive motor 3 is connected with the oil outlet pipeline of the left conveying drive motor speed regulating valve 10, it is connected with the oil inlet pipeline of the right picking and conveying drive motor 4 and the oil inlet pipeline of the right conveying drive motor speed regulating valve 9; both ends of the oil inlet and outlet of the left picking and conveying drive motor 3 are connected in parallel with the left conveying drive motor speed regulating valve 10; the left conveying drive motor speed regulating valve 10 is provided with a valve core with an adjustable diameter, and when the hydraulic oil flows into the oil inlet of the left picking and conveying drive motor 3, a part of the hydraulic oil will flow into the valve core of the left conveying drive motor speed regulating valve 10; the oil inlet amount of the left picking and conveying drive motor 3 is related to the left conveying drive motor speed regulating valve 1 0 is added together and is equal to the oil output of the picking roller drive motor 2; by increasing or decreasing the diameter of the valve core on the left conveying drive motor speed regulating valve 10, the oil inlet of the left conveying drive motor speed regulating valve 10 will also increase or decrease, and the oil inlet of the left picking conveying drive motor 3 will decrease or increase accordingly; in summary, it can be seen that the speed of the left picking conveying drive motor 3 is mainly determined by the diameter of the valve core on the left conveying drive motor speed regulating valve 10, and by changing the diameter of the valve core on the left conveying drive motor speed regulating valve 10, the speed of the left picking conveying drive motor 3 will also change accordingly; the left picking conveying drive motor 3 and the oil outlet of the left conveying drive motor speed regulating valve 10 are connected to the oil inlet of the right picking conveying drive motor 4 and the right conveying drive motor speed regulating valve 9;

[0025] The right picking and conveying drive motor 4 is connected in parallel with the right conveying drive motor speed regulating valve 9; after the oil outlet pipeline of the right picking and conveying drive motor 4 is connected with the oil outlet pipeline of the right conveying drive motor speed regulating valve 9, it is connected with the oil inlet of the cleaning wheel group drive motor 5 and the oil inlet pipeline of the cleaning wheel group drive motor speed regulating valve 8; from the speed regulation analysis analogy of the left picking and conveying drive motor 3, it can be seen that the speed of the right picking and conveying drive motor 4 is mainly determined by the diameter of the valve core on the right conveying drive motor speed regulating valve 9, and the speed of the right picking and conveying drive motor 4 is changed accordingly by changing the diameter of the valve core on the right conveying drive motor speed regulating valve 9; the oil outlet of the right picking and conveying drive motor 4 and the right conveying drive motor speed regulating valve 9 are connected to the oil inlet of the cleaning wheel group drive motor 5 and the cleaning wheel group drive motor speed regulating valve 8;

[0026] The cleaning wheel group drive motor 5 is connected in parallel with the cleaning wheel group drive motor speed regulating valve 8; after the oil outlet pipeline of the cleaning wheel group drive motor 5 is connected with the oil outlet pipeline of the cleaning wheel group drive motor speed regulating valve 8, it is connected with the oil inlet of the cleaning fan drive motor 6 and the oil inlet pipeline of the fan drive motor speed regulating valve 7; from the previous analysis and analogy, it can be seen that the speed of the cleaning wheel group drive motor 5 is mainly determined by the diameter of the valve core on the cleaning wheel group drive motor speed regulating valve 8, and the speed of the cleaning wheel group drive motor 5 is changed accordingly by changing the diameter of the valve core on the cleaning wheel group drive motor speed regulating valve 8; the oil outlet of the cleaning wheel group drive motor 5 and the cleaning wheel group drive motor speed regulating valve 8 are connected to the oil inlet of the cleaning fan drive motor 6 and the fan drive motor speed regulating valve 7;

[0027] The cleaning fan drive motor 6 is connected in parallel with the fan drive motor speed regulating valve 7; the oil outlet of the cleaning fan drive motor 6 and the fan drive motor speed regulating valve 7 are connected to the low-pressure oil port of the plunger variable pump 12; from the previous analysis and analogy, it can be seen that the speed of the cleaning fan drive motor 6 is mainly determined by the diameter of the valve core on the fan drive motor speed regulating valve 7. By changing the diameter of the valve core on the fan drive motor speed regulating valve 7, the speed of the cleaning fan drive motor 6 also changes accordingly; a one-way valve is provided on the cleaning fan drive motor 6; from the structure of the cleaning fan drive motor 6 itself, it can be seen that its low-pressure end cannot withstand the high pressure brought by the continued rotation of the components it drives under the action of inertia; when the one-way valve integrated in the fan drive motor speed regulating valve 7 does not work, the one-way valve integrated on the cleaning fan drive motor 6 can quickly release the pressure, thereby ensuring that the cleaning fan drive motor 6 will not be damaged;

[0028] The fan drive motor speed regulating valve 7, the cleaning wheel drive motor speed regulating valve 8, the right conveying drive motor speed regulating valve 9 and the left conveying drive motor speed regulating valve 10 are all provided with valve cores with adjustable diameters and one-way valves; taking the left picking and conveying drive motor 3 as an example, when the plunger variable pump 12 stops outputting flow, the motor drive component will continue to rotate under the action of inertia, thereby driving the left picking and conveying drive motor 3 to continue rotating; at this time, the oil outlet of the left picking and conveying drive motor 3 will discharge hydraulic oil, forming high pressure in a short time, thereby driving the right picking and conveying drive motor 4 to rotate; the function of the one-way valve is that when the hydraulic oil pressure at the oil outlet of the left picking and conveying drive motor 3 is too high, since the oil outlet of the left picking and conveying drive motor 3 is connected to the oil outlet of the left conveying drive motor speed regulating valve 10, the one-way valve integrated in the left conveying drive motor speed regulating valve 10 can release the high-pressure hydraulic oil at the oil outlet of the left picking and conveying drive motor 3 to the oil inlet of the left picking and conveying drive motor 3, thereby quickly stopping the motor-driven components and eliminating the impact on the subsequent motors;

[0029] The plunger variable pump 12 is connected in parallel with the flushing valve 11; the flushing valve 11 discharges the hydraulic oil on the low-pressure side of the closed hydraulic system into the hydraulic oil tank according to the flow rate set by the flushing valve 11; at the same time, the oil replenishment pump integrated in the plunger variable pump 12 replenishes the hydraulic oil to the high-pressure side of the closed hydraulic system; the function of the flushing valve 11 is to keep the closed hydraulic system clean and reduce the temperature of the closed hydraulic system;

[0030] The picking roller drive motor 2, the left picking and conveying drive motor 3, the right picking and conveying drive motor 4, the cleaning wheel drive motor 5, the cleaning fan drive motor 6, and the plunger variable pump 12 are all provided with an oil drain port, which is connected to the hydraulic oil tank 1;

[0031] The picking roller drive motor 2, the left picking and conveying drive motor 3, the right picking and conveying drive motor 4, the cleaning wheel group drive motor 5 and the cleaning fan drive motor 6 are fixed displacement motors; the hydraulic oil tank 1 and the oil pipeline are provided with a hydraulic oil filter, an air-cooled radiator, and a liquid level and temperature gauge.

[0032] In this hydraulic system, since the rotational speeds of the left picking and conveying drive motor 3, the right picking and conveying drive motor 4, the cleaning wheel group drive motor 5, and the cleaning fan drive motor 6 are affected by the flow rate at the oil outlet of the picking roller drive motor 2, when in use, the displacement of the plunger variable pump 12 should be adjusted first so that the picking roller drive motor 2 reaches the target rotational speed, and then the valve core diameters of the left conveying drive motor speed regulating valve 10, the right conveying drive motor speed regulating valve 9, the cleaning wheel group drive motor speed regulating valve 8, and the fan drive motor speed regulating valve 7 are adjusted in turn; thereby, the rotational speeds of the left picking and conveying drive motor 3, the right picking and conveying drive motor 4, the cleaning wheel group drive motor 5, and the cleaning fan drive motor 6 can reach the target rotational speeds respectively.

[0033] The present invention, through an ingenious combination of hydraulic elements and a closed hydraulic circuit, can simultaneously drive three motors for picking and two motors for cleaning; moreover, by adjusting the displacement of the plunger variable pump 12 or adjusting the flow of the valve block, the speed of each motor can be independently adjusted; it can meet the needs of actual use and improve the operational adaptability of the whole machine; the present invention can theoretically be further expanded, for example, the two motors for cleaning on the whole machine can be changed to three motors, and an oil circuit switching valve can be installed before the motor.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0035] The parts not described in detail in this utility model are prior art.

Claims

1. A chili harvester picking and cleaning hydraulic system, comprising a hydraulic oil tank (1), a picking roller drive motor (2), a left picking and conveying drive motor (3), a right picking and conveying drive motor (4), a cleaning wheel drive motor (5), a cleaning fan drive motor (6), a fan drive motor speed regulating valve (7), a cleaning wheel drive motor speed regulating valve (8), a right conveying drive motor speed regulating valve (9), a left conveying drive motor speed regulating valve (10), a flushing valve (11) and a plunger variable pump (12), wherein: The high-pressure oil port of the plunger variable pump (12) is connected to the oil inlet of the picking roller drive motor (2); the oil outlet of the picking roller drive motor (2) is connected to the oil inlet of the left picking and conveying drive motor (3); The left picking and conveying drive motor (3) is connected in parallel with the left conveying drive motor speed regulating valve (10); the oil outlet of the left picking and conveying drive motor (3) and the left conveying drive motor speed regulating valve (10) is connected to the oil inlet of the right picking and conveying drive motor (4) and the right conveying drive motor speed regulating valve (9); The right picking and conveying drive motor (4) is connected in parallel with the right conveying drive motor speed regulating valve (9); the oil outlet of the right picking and conveying drive motor (4) and the right conveying drive motor speed regulating valve (9) is connected to the oil inlet of the cleaning wheel group drive motor (5) and the cleaning wheel group drive motor speed regulating valve (8); The cleaning wheel group drive motor (5) is connected in parallel with the cleaning wheel group drive motor speed regulating valve (8); the oil outlet of the cleaning wheel group drive motor (5) and the cleaning wheel group drive motor speed regulating valve (8) is connected to the oil inlet of the cleaning fan drive motor (6) and the fan drive motor speed regulating valve (7); The cleaning fan drive motor (6) is connected in parallel with the fan drive motor speed regulating valve (7); the oil outlets of the cleaning fan drive motor (6) and the fan drive motor speed regulating valve (7) are connected to the low-pressure oil port of the plunger variable pump (12); The plunger variable pump (12) is connected in parallel with the flushing valve (11); The picking roller drive motor (2), the left picking conveying drive motor (3), the right picking conveying drive motor (4), the cleaning wheel drive motor (5), the cleaning fan drive motor (6), and the plunger variable pump (12) are all provided with an oil drain port, and the oil drain port is connected to the hydraulic oil tank (1).

2. The chili harvester picking and cleaning hydraulic system according to claim 1, characterized in that: After the oil outlet pipeline of the left picking and conveying drive motor (3) is connected to the oil outlet pipeline of the left conveying drive motor speed regulating valve (10), it is connected to the oil inlet pipeline of the right picking and conveying drive motor (4) and the oil inlet pipeline of the right conveying drive motor speed regulating valve (9).

3. The chili harvester picking and cleaning hydraulic system according to claim 1 is characterized by: After the oil outlet pipeline of the right picking and conveying drive motor (4) is connected to the oil outlet pipeline of the right conveying drive motor speed regulating valve (9), it is connected to the oil inlet pipeline of the cleaning wheel group drive motor (5) and the oil inlet pipeline of the cleaning wheel group drive motor speed regulating valve (8).

4. The chili harvester picking and cleaning hydraulic system according to claim 1, characterized in that: After the oil outlet pipeline of the cleaning wheel group drive motor (5) is connected to the oil outlet pipeline of the cleaning wheel group drive motor speed regulating valve (8), it is connected to the oil inlet of the cleaning fan drive motor (6) and the oil inlet pipeline of the fan drive motor speed regulating valve (7).

5. The chili harvester picking and cleaning hydraulic system according to claim 1, characterized in that: The fan drive motor speed regulating valve (7), the cleaning wheel group drive motor speed regulating valve (8), the right conveying drive motor speed regulating valve (9) and the left conveying drive motor speed regulating valve (10) are all provided with valve cores with adjustable diameters and one-way valves.

6. The chili harvester picking and cleaning hydraulic system according to claim 1, characterized in that: The cleaning fan drive motor (6) is provided with a one-way valve.

7. The chili harvester picking and cleaning hydraulic system according to claim 1, characterized in that: The displacements of the picking roller drive motor (2), the left picking conveying drive motor (3), the right picking conveying drive motor (4), the cleaning wheel drive motor (5) and the cleaning fan drive motor (6) are all fixed.

8. The chili harvester picking and cleaning hydraulic system according to claim 1, characterized in that: The hydraulic oil tank (1) and the oil pipeline are provided with a hydraulic oil filter, an air-cooled radiator, and a liquid level and temperature gauge.

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