Hydraulic system capable of adjusting rotating speed of header and corn harvester

Abstract

The utility model relates to the technical field of variable-speed cutting tables, in particular to a hydraulic system capable of adjusting the rotating speed of a cutting table and a corn harvester, which comprise a pump seat assembly, a hydraulic pump arranged on the pump seat assembly, a hydraulic oil tank assembly, a hydraulic power output unit and a transmission case, an output shaft of the engine is in transmission connection with the input end of the pump seat assembly, the output end of the pump seat assembly is in transmission connection with an input shaft of the hydraulic pump, an oil conveying port of the hydraulic oil tank is communicated with a liquid inlet of the hydraulic pump through a first oil pipe, and a liquid outlet of the hydraulic pump is communicated with an oil inlet of the hydraulic power output unit through a second oil pipe. The second oil pipe is provided with an oil quantity control unit capable of controlling the hydraulic oil flow, an output shaft of the hydraulic power output unit is in transmission connection with the input end of the transmission box, and the output end of the transmission box is in transmission connection with the header; the problem that the rotating speed of a header of an existing corn harvester is difficult to adjust accurately when corn varieties, maturity (green humidity) or regional conditions are different can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of variable-speed cutting platforms, in particular to a hydraulic system with adjustable cutting platform speed and a corn harvester. Background Art

[0002] With the rapid development of modern corn harvesting technology, the contradiction between the increasing number of agricultural machinery operators and the balance of cultivated land has caused agricultural machinery operators to have to harvest from multiple regions in order to make money, which has caused corn harvesters to adapt to the harvesting environment in different regions. There are great differences in corn varieties (seed corn, fresh corn, etc.), maturity and harvesting purposes between different regions, which has high technical requirements for the adjustable speed technology of the corn harvester's header. As a result, it is necessary to use a harvester with an adjustable header speed function, but there are almost no speed-adjustable corn headers that can be used for practical applications. Although some speed-adjustable corn headers provide speed adjustment functions, their operation is cumbersome. For example, the header equipped with the corn machine mainly changes the number of teeth of the sprocket in the divider, thereby changing the transmission ratio of the chain drive to achieve header speed adjustment. It needs to be manually adjusted after stopping the machine, which is not very practical and greatly affects the cross-regional operation efficiency of agricultural machinery operators.

[0003] In response to the above problems, a new type of variable speed corn harvesting table is proposed, which adopts hydraulic pump speed regulation technology, which can not only realize the convenient adjustment of cutting speed, but also can automatically adjust according to actual conditions, greatly improving the harvesting efficiency and corn quality protection. Utility Model Content

[0004] The utility model aims to provide a hydraulic system with adjustable cutting table speed, which can solve the problem that the speed of the cutting table of the existing corn harvester is difficult to accurately adjust when the corn type, maturity (green wetness) or regional conditions are different.

[0005] Another object of the utility model is to provide a corn harvester, which can solve the problem that the rotation speed of the cutting table of the existing corn harvester is difficult to accurately adjust when the corn type, maturity or regional conditions are different.

[0006] The technical solution of the utility model is achieved in this way:

[0007] A hydraulic system with adjustable cutting table speed, comprising a pump seat assembly, a hydraulic pump arranged on the pump seat assembly, a hydraulic oil tank assembly, a hydraulic power output unit and a transmission box;

[0008] The output shaft of the engine is connected to the input end of the pump seat assembly for transmission, the output end of the pump seat assembly is connected to the input shaft of the hydraulic pump for transmission, the hydraulic oil tank assembly includes a hydraulic oil tank, the oil delivery port of the hydraulic oil tank is connected to the liquid inlet of the hydraulic pump through a first oil pipe, the liquid outlet of the hydraulic pump is connected to the oil inlet of the hydraulic power output unit through a second oil pipe, the second oil pipe is provided with an oil quantity control unit capable of controlling the flow rate of hydraulic oil, the output shaft of the hydraulic power output unit is connected to the input end of the transmission box for transmission, and the output end of the transmission box is connected to the cutting platform for transmission.

[0009] Furthermore, it also includes an oil cooling unit, the oil outlet of the hydraulic power output unit is connected to the input port of the oil cooling unit through a third oil pipe, and the output port of the oil cooling unit is connected to the oil inlet of the hydraulic oil tank through a fourth oil pipe.

[0010] Furthermore, the oil cooling unit adopts an electronic oil radiator.

[0011] Furthermore, the oil quantity control unit adopts a control valve.

[0012] Furthermore, the control valve is an electronic control valve.

[0013] Furthermore, the transmission box adopts a T-type transmission box.

[0014] Furthermore, the hydraulic power output unit adopts a hydraulic motor.

[0015] Furthermore, an input pulley is provided at the input end of the pump seat assembly, and the output end of the engine is connected to the input pulley for transmission via a belt.

[0016] A corn harvester comprises the hydraulic system with adjustable cutting table speed.

[0017] Furthermore, it also includes a cutting platform and an ear picking frame assembly, the hydraulic system for adjusting the cutting platform speed is arranged on the ear picking frame assembly, and the output end of the transmission box is connected to the input end of the cutting platform for transmission.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The hydraulic system of the present application can freely control or adjust the amount of oil entering the hydraulic power output unit through the oil control unit, and then adjust the speed of the hydraulic power output unit. Since the hydraulic power output unit uses hydraulic oil to rotate at high speed to generate torque, the generated torque is further transmitted to the transmission box, and the torque passing through the transmission box finally drives the harvesting chain of the harvesting table to rotate. Therefore, the oil control unit can accurately control or adjust the amount of oil entering the hydraulic power output unit, which eventually acts on the harvesting table and can accurately adjust the speed of the harvesting table. When the speed of the harvesting table can be accurately adjusted, it can also adapt to the operation of the corn harvester when the corn type, maturity (green wetness) or regional conditions are different.

[0020] Adapting to different types of corn: The cutting table speed of traditional corn harvesters is often fixed or has a limited adjustment range, which makes it difficult to adapt to the harvesting needs of different types of corn; the hydraulic system of the present application enables the agricultural machine operator to flexibly adjust the cutting table speed according to the type of corn, ensuring efficient and damage-free harvesting of various types of corn.

[0021] Adapting to the difference in corn wetness: Too fast a cutter speed may cause damage to immature corn, while too slow a speed will greatly reduce the harvesting efficiency. This application uses a hydraulic system to accurately set the cutter speed according to the corn wetness, ensuring the harvesting quality while improving the operating efficiency.

[0022] Adapt to different regional environments; due to the influence of factors such as climate and soil conditions in various places, traditional corn harvesters are often unable to quickly adjust the appropriate cutter speed according to changes in the regional environment; and the present application can meet the cutter speed that agricultural machinery operators want to use for different regional environments, ensuring that the best harvesting effect can be achieved in various environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a structural schematic diagram of the utility model hydraulic system installed on the ear picking stand assembly;

[0025] Figure 2 For this utility model Figure 1 Axonometric view from above;

[0026] Figure 3 For this utility model Figure 1 Another perspective structural diagram of;

[0027] Figure 4 For this utility model Figure 1 Side view of.

[0028] In the figure:

[0029] 1-Pump seat assembly; 2-Input pulley; 3-Hydraulic pump;

[0030] 4-Hydraulic oil tank assembly; 5-Hydraulic motor; 6-T-type transmission box;

[0031] 7-electronic oil diffuser; 8-first oil pipe; 9-second oil pipe;

[0032] 10-the third oil pipe; 11-the fourth oil pipe; 12-the ear picking stand assembly. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0036] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0037] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0038] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0040] Example 1

[0041] The present application provides a hydraulic system with adjustable cutting table speed, aiming to solve the problem that the cutting table speed of the existing corn harvester is difficult to accurately adjust when the corn type, maturity or regional conditions are different. The following is a specific technical solution:

[0042] Reference Figure 1-Figure 4 , this embodiment provides a hydraulic system with adjustable cutting table speed, including a pump seat assembly 1, a hydraulic pump 3 arranged on the pump seat assembly 1, a hydraulic oil tank assembly 4, a hydraulic power output unit and a transmission box;

[0043] The output shaft of the engine is connected to the input end of the pump seat assembly 1 for transmission, the output end of the pump seat assembly 1 is connected to the input shaft of the hydraulic pump 3 for transmission, the hydraulic oil tank assembly 4 includes a hydraulic oil tank, the oil delivery port of the hydraulic oil tank is connected to the liquid inlet of the hydraulic pump 3 through a first oil pipe 8, the liquid outlet of the hydraulic pump 3 is connected to the oil inlet of the hydraulic power output unit through a second oil pipe 9, the second oil pipe 9 is provided with an oil quantity control unit capable of controlling the flow rate of hydraulic oil, the output shaft of the hydraulic power output unit is connected to the input end of the transmission box for transmission, and the output end of the transmission box is connected to the cutting platform for transmission.

[0044] Preferably, an input pulley 2 is provided at the input end of the pump seat assembly 1, and the output end of the engine is connected to the input pulley 2 through a belt transmission.

[0045] Preferably, the hydraulic power output unit adopts a hydraulic motor 5.

[0046] Preferably, the oil quantity control unit adopts a control valve.

[0047] The control valve is an electronic control valve.

[0048] The transmission box adopts a T-type transmission box 6.

[0049] The transmission process of this scheme: the input pulley 2 in the pump seat assembly 1 is a key component for energy conversion, which obtains energy from the engine through a belt. The input pulley 2 with energy drives the hydraulic pump 3 to start operating, and the hydraulic pump 3 draws hydraulic oil from the hydraulic oil tank through the first oil pipe 8. The hydraulic oil drawn by the hydraulic pump 3 is sent to the oil inlet of the hydraulic motor 5 through the second oil pipe 9 (the amount of oil entering the hydraulic motor 5 can be freely controlled by the control valve, which directly affects the speed of the hydraulic motor 5). The hydraulic motor 5 uses the hydraulic oil to rotate at high speed to generate torque, and the generated torque is further transmitted to the T-type transmission box 6 to prepare for subsequent energy transmission. The torque passing through the T-type transmission box 6 finally drives the straw chain of the harvesting table to rotate, completing the harvesting operation.

[0050] The hydraulic system also includes an oil cooling unit, the oil outlet of the hydraulic power output unit is connected to the oil input port of the oil cooling unit through a third oil pipe 10, and the output port of the oil cooling unit is connected to the oil inlet of the hydraulic oil tank through a fourth oil pipe 11.

[0051] The oil cooling unit adopts an electronic oil radiator 7.

[0052] Heat dissipation and circulation of hydraulic oil in this scheme: in the above-mentioned transmission process, high-pressure and high-speed flowing hydraulic oil will generate high temperature; in order to control the oil temperature, the hydraulic oil entering the hydraulic motor 5 enters the electronic oil radiator 7 through the third oil pipe 10 at its oil outlet for cooling treatment, and the hydraulic oil cooled by the electronic oil radiator 7 comes out from its oil outlet and returns to the hydraulic oil tank through the fourth oil pipe 11, forming a closed circulation system.

[0053] Example 2

[0054] This embodiment provides a hydraulic system with adjustable cutting table speed, which differs from Embodiment 1 in that this embodiment uses an input gear or an input sprocket instead of the input pulley 2, and the output end of the engine is connected to the input gear or the input sprocket through gear transmission or chain transmission.

[0055] Example 3

[0056] A corn harvester includes the hydraulic system with adjustable cutting table speed, and also includes a cutting table and an ear picking frame assembly 12. The hydraulic system with adjustable cutting table speed is arranged on the ear picking frame assembly 12, and the output end of the transmission box is connected to the input end of the cutting table for transmission.

[0057] Specifically, the hydraulic oil tank assembly 4, the pump seat assembly 1, the hydraulic motor 5, the T-type transmission box 6 and the electronic oil diffuser 7 of the hydraulic system are arranged in an orderly manner on the ear picking stand assembly 12, such as Figure 1 shown.

[0058] The beneficial effects of the technical solution of the utility model are:

[0059] The hydraulic system of the present application can freely control or adjust the amount of oil entering the hydraulic power output unit through the oil control unit, and then adjust the speed of the hydraulic power output unit. Since the hydraulic power output unit uses hydraulic oil to rotate at high speed to generate torque, the generated torque is further transmitted to the transmission box, and the torque passing through the transmission box finally drives the harvesting chain of the harvesting table to rotate. Therefore, the oil control unit can accurately control or adjust the amount of oil entering the hydraulic power output unit, which eventually acts on the harvesting table and can accurately adjust the speed of the harvesting table. When the speed of the harvesting table can be accurately adjusted, it can also adapt to the operation of the corn harvester when the corn type, maturity (green wetness) or regional conditions are different.

[0060] (1) Adapt to different types of corn: There are many types of corn on the market, and different types of corn have differences in their stalk hardness, ear density, etc. The cutting table speed of traditional corn harvesters is often fixed or has a limited adjustment range, which makes it difficult to adapt to the harvesting needs of different types of corn. The hydraulic system of the present application enables the agricultural machine operator to flexibly adjust the cutting table speed according to the type of corn, ensuring efficient and non-destructive harvesting of various types of corn.

[0061] (2) Adapting to the difference in corn moisture content: In my country, corn harvesting is mainly concentrated in September and October. As time goes by, the degree of corn moisture content changes day by day. Too fast a cutter speed may cause damage to immature corn, while too slow a speed will greatly reduce the harvesting efficiency. This application can accurately set the cutter speed according to the corn moisture content, ensuring the harvesting quality while improving the operation efficiency.

[0062] (3) Adapt to different regional environments: Due to the influence of climate, soil conditions and other factors in different regions, traditional corn harvesters are often unable to quickly adjust the appropriate cutting table speed according to changes in the regional environment. This application can meet the cutting table speed that agricultural machine operators want to use for different regional environments, ensuring that the best harvesting effect can be achieved in various environments.

[0063] The present application skillfully combines mechanical, hydraulic and electronic technologies, and on the basis of realizing the arbitrary adjustable speed of the cutting table, also ensures the effective use of energy, the continuous operation of the system and the effective control of temperature.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

[0065] In addition, those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the above claims, any one of the claimed embodiments may be used in any combination. The information disclosed in this background technology section is intended only to deepen the understanding of the overall background technology of the present invention and should not be regarded as an admission or in any form of implication that the information constitutes prior art known to those skilled in the art.

[0066] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0067] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A hydraulic system with adjustable cutting table speed, characterized in that: It comprises a pump seat assembly (1), a hydraulic pump (3) arranged on the pump seat assembly (1), a hydraulic oil tank assembly (4), a hydraulic power output unit and a transmission box; The output shaft of the engine is connected to the input end of the pump seat assembly (1) for transmission, and the output end of the pump seat assembly (1) is connected to the input shaft of the hydraulic pump (3) for transmission. The hydraulic oil tank assembly (4) includes a hydraulic oil tank, and the oil delivery port of the hydraulic oil tank is connected to the liquid inlet of the hydraulic pump (3) through a first oil pipe (8), and the liquid outlet of the hydraulic pump (3) is connected to the oil inlet of the hydraulic power output unit through a second oil pipe (9). The second oil pipe (9) is provided with an oil quantity control unit capable of controlling the flow rate of the hydraulic oil. The output shaft of the hydraulic power output unit is connected to the input end of the transmission box for transmission, and the output end of the transmission box is connected to the header for transmission.

2. The hydraulic system for adjustable cutting platform speed according to claim 1, characterized in that: It also includes an oil cooling unit, wherein the oil outlet of the hydraulic power output unit is connected to the oil input port of the oil cooling unit through a third oil pipe (10), and the output port of the oil cooling unit is connected to the oil inlet of the hydraulic oil tank through a fourth oil pipe (11).

3. The hydraulic system for adjustable cutting platform speed according to claim 2, characterized in that: The oil cooling unit adopts an electronic oil radiator (7).

4. The hydraulic system for adjusting the cutting platform speed according to claim 1, characterized in that: The oil quantity control unit adopts a control valve.

5. The hydraulic system for adjustable cutting platform speed according to claim 4, characterized in that: The control valve is an electronic control valve.

6. The hydraulic system for adjustable cutting platform speed according to claim 1, characterized in that: The transmission box adopts a T-type transmission box (6).

7. The hydraulic system for adjustable cutting platform speed according to claim 1, characterized in that: The hydraulic power output unit adopts a hydraulic motor (5).

8. The hydraulic system for adjusting the cutting platform speed according to claim 1, characterized in that: An input pulley (2) is provided at the input end of the pump seat assembly (1), and the output end of the engine is connected to the input pulley (2) through a belt for transmission.

9. A corn harvester, characterized in that: A hydraulic system with adjustable cutting platform speed comprising any one of claims 1-8.

10. The corn harvester according to claim 9, characterized in that: It also comprises a cutting platform and an ear picking frame assembly (12), wherein the hydraulic system for adjusting the rotating speed of the cutting platform is arranged on the ear picking frame assembly (12), and the output end of the transmission box is connected to the input end of the cutting platform for transmission.

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