Hydraulic system for a sugarcane harvesting and stacking machine.

Description

1 / 12 Hydraulic system for a sugarcane harvesting and stacking machine. Cross-reference to the related request.

[001] The present application claims priority over the Chinese patent application filed with the China Patent Office, application number 202420313703.9, filed on February 20, 2024, and entitled Hydraulic System of Sugarcane Harvesting and Stacking Machine, the full content of which is incorporated herein by reference. Field of Technique

[002] This utility model application relates to the field of sugarcane harvesting and stacking machines, and in particular to a hydraulic system for a sugarcane harvesting and stacking machine. Background of the Technique

[003] Sugarcane is one of the main commercial crops used for sugar extraction. After harvesting, sugarcane needs to be transported to a sugar mill for extraction. Once the sugarcane arrives at the mill, a storage period is necessary. During this storage period, the sugarcane must remain intact. In existing whole-stalk and cut-off harvesting methods, whole-stalk sugarcane has a complete outer layer, which is more suitable for storage.

[004] Currently, to meet the needs of sugar mills, sugarcane harvesting in China still relies mainly on manual labor, primarily through manual cutting, loading, and transport. There is also a method of manual cutting combined with mechanical loading and transport. Problems such as high labor intensity and low efficiency Petition 870250053222, dated 06 / 25 / 2025, p. 8 / 37 The fact that 2 / 12 of the harvest and relatively high labor costs lead to reduced profitability from sugarcane planting and a decrease in planting rates is common. Some sugarcane is also harvested by a cutting-type sugarcane harvester. When harvesting sugarcane, the cutting-type harvester cuts the sugarcane into pieces, forming many cut ends, which is not conducive to preservation. After being transported to the sugar mill, the sugarcane needs to be pressed quickly to turn into sugar. Although the cutting-type sugarcane harvester has high harvesting efficiency and low harvesting cost, the harvested sugarcane cannot be stored for long and does not meet the needs of the sugar mill. This is also one of the main reasons for the low yield of sugarcane harvesters. In conclusion, segmented sugarcane harvesting is currently being promoted in the market.After all the sugarcane is harvested and stacked in the field, it is subsequently transported for cleaning or manual processing, which can not only improve the efficiency of sugarcane harvesting and reduce the labor intensity of people, but also lower the cost of planting sugarcane, increase the income of producers, and meet the needs of sugar mills. A sugarcane harvesting and stacking machine is a machine for harvesting and stacking sugarcane. During harvesting, the sugarcane is cut at the root and transported to the silo by means of a conveyor belt. When the silo is full, the sugarcane is dumped onto the ground to form a sugarcane pile. During the harvesting process, only the dry leaves and tips of the sugarcane are treated, primarily to ensure the integrity of the peel, minimizing harvest losses and facilitating storage.

[005] As the sugarcane harvesting and stacking machine Petition 870250053222, dated 06 / 25 / 2025, page 9 / 37 3 / 12 sugar cane harvesters have many working components and complex structures and movements. These working components are hydraulically controlled and actuated to implement different operational actions. However, the existing hydraulic system of the sugar cane harvesting and stacking machine is unstable in operation, insensitive in response, and has low work efficiency, in addition to having many operational steps and complex structures and movements. Summary of the Request Purpose of the Request

[006] Therefore, the present application provides a hydraulic system for a sugarcane harvesting and stacking machine to overcome or at least partially solve the above problems. Solution

[007] To achieve the objective, the present application provides the following technical solutions.

[008] The present application provides a hydraulic system for a sugarcane harvesting and stacking machine, comprising a sugarcane harvesting and stacking machine body, a hydraulic displacement system, a hydraulic working device system and a hydraulic auxiliary device system; wherein the body of the sugarcane harvesting and stacking machine comprises a front conveyor belt, a rear conveyor belt, a silo, a collection guard, a cutting platform, a root cutting device, an oil cylinder for the collection guard, an oil cylinder for the hopper lifting, and an oil cylinder for opening and closing the door; The hydraulic system of the working device comprises a duplex pump, a first group of reversing valves, a second group of reversing valves, and a third group of valves. Petition 870250053222, dated 06 / 25 / 2025, page 10 / 374 / 12 reversing, a first working motor, a second working motor, a third working motor, a fourth working motor, a fifth working motor, a sixth working motor, a seventh working motor, an eighth working motor, a ninth working motor and a bypass valve; the hydraulic system of the working device is driven separately by a first working oil port P1 and a second working oil port P2 of the duplex pump; the duplex pump is supplied with oil by a hydraulic oil tank; the first working oil port P1 of the duplex pump is configured to control, through the first group of reversing valves, the work of the first working motor, the second working motor, the third working motor, the fourth working motor, the fifth working motor and the sixth working motor;The first working motor, the third working motor, and the fifth working motor are connected in series with the second working motor, the fourth working motor, and the sixth working motor to work in parallel; the first group of reversing valves is configured to set the highest working pressure of a working system from the first working oil port P1 of the duplex pump and control the rotation directions of the motors; the first working motor, the second working motor, the third working motor, the fourth working motor, the fifth working motor, and the sixth working motor are all capable of performing forward and reverse rotation; the first working motor and the second working motor are mounted on a cutting head of the root cutting device; the third working motor and the fourth working motor are mounted on a drive shaft of a conveyor belt of the front conveyor;The fifth and sixth working motors are mounted on a drive shaft of a rear conveyor belt; and the bypass valve is located at an outlet of the; Petition 870250053222, dated 06 / 25 / 2025, p. 11 / 37 5 / 12 first working oil port P1 of the duplex pump and communicates directly with the oil tank; the second working oil port P2 of the duplex pump is configured to control, through the second group of reversing valves and the third group of reversing valves, the work of the seventh working motor, the eighth working motor and the ninth working motor; the second group of reversing valves is configured to set the highest working pressure of a working system from the second working oil port P2 of the duplex pump and control the rotation directions of the seventh working motor, the eighth working motor and the ninth working motor; the seventh working motor, the eighth working motor and the ninth working motor are all capable of achieving forward and reverse rotation, where the seventh working motor is configured to drive the conveyor belt to rotate, assisting in transporting the sugarcane to ascend;The eighth and ninth working motors are connected in series to power the collection protection at the front of the platform.

[009] As an additional solution to the present application, the mobile hydraulic system drives a drive wheel with a variable speed hydraulic transmission device of a model 45HST, and the drive wheel drives a mobile conveyor belt to move the machine forward and backward.

[0010] As an additional solution to the present application, the hydraulic system of the auxiliary device comprises an auxiliary pump, a manual reversing valve, an integrated valve, a sequential valve and a hydraulic oil cylinder; the oil from the auxiliary pump is supplied to the manual reversing valve and the integrated valve; the integrated valve is configured to control the direction of the sugarcane harvesting and stacking machine and an oil cylinder for the machine platform; the silo is used for a lifting oil cylinder. Petition 870250053222, dated 06 / 25 / 2025, page 12 / 37 6 / 12 and for the door opening and closing oil cylinder; a sequence of actions of the lifting oil cylinder and the door opening and closing oil cylinder is controlled by the sequential valve; and two sets of actions, namely, the raising and lowering of the compartment and the opening and closing of the door, are performed by hydraulic oil in a single path.

[0011] As an additional solution for the present application, the left and right parts of the conveyor belt of the front conveyor and the conveyor belt of the rear conveyor are closely combined with a long combination length, and synchronous transmission is able to be achieved by mutual friction in a working process. Beneficial effects

[0012] The present application provides a hydraulic system for a sugarcane harvesting and stacking machine, which has the following beneficial effects.

[0013] The hydraulic system of the present application, composed of hydraulic components such as a working pump, a high-pressure hydraulic control system (HST), a hydraulic control valve and working motors, can stably and efficiently perform functions such as displacement and harvesting operations of the sugarcane harvesting and stacking machine.

[0014] The hydraulic system of the present application is mature, stable and sensitive in response to action, so that the control of the action and the harvesting of the sugar cane can be completed efficiently.

[0015] The front and rear conveyors of the hydraulic system of the present application are in semi-rigid connection without an additional synchronization device and can slide relatively to prevent the components from being damaged in case of overload.

[0016] The hydraulic system of the present application allows for the discharge Petition 870250053222, dated 06 / 25 / 2025, page 13 / 37 The 7 / 12 ga silo can be emptied with just one button, thus reducing operating steps and saving time, while the sugarcane harvesting and stacking machine has many working components and complex structures and movements.

[0017] The hydraulic system of the present application is stable and reliable, economical and efficient. Brief Description of the Drawings

[0018] In order to illustrate more clearly the technical solutions of the embodiments of the present application or of the state of the art, the drawings required in the description of the embodiments or of the state of the art are briefly presented below. Apparently, the drawings in the description below are only illustrative, and those skilled in the art can derive other drawings from the drawings provided without creative effort.

[0019] The structures, proportions, sizes and the like described in this specification are intended solely to illustrate the content disclosed herein for the understanding and reading of those skilled in the art. They are not intended to limit the scope of embodiments that may be implemented by this application and, therefore, have no substantial technical significance. Any modification of structures, alteration of proportions or adjustment of sizes, provided that it does not affect the effectiveness and objectives attainable by this application, shall still fall within the scope of the technical content disclosed by this application.

[0020] Figure 1 is a general side structural diagram of the body of a sugarcane harvesting and stacking machine in the present application;

[0021] Figure 2 is a general top structural diagram of the body of a sugarcane harvesting and stacking machine in the present application; Petition 870250053222, dated 06 / 25 / 2025, page 14 / 37 8 / 12

[0022] Figure 3 is a schematic diagram of a hydraulic system for a working device and a hydraulic system for an auxiliary device in the present application;

[0023] Figure 4 is a schematic diagram of a hydraulic working device system in the present application;

[0024] Figure 5 is a schematic diagram of an auxiliary hydraulic device system in the present application;

[0025] Figure 6 is a schematic diagram of a mobile hydraulic system in the present application. List of Reference Numbers: 1: Front conveyor; 2: Rear conveyor; 3: Silo; 4: Collection guard; 5: Platform; 6: Root cutting device; 7: Collection guard oil cylinder; 8: Hopper lifting oil cylinder; 9: Door opening and closing oil cylinder; 10: Duplex pump; 11: First group of reversing valves; 12: Second group of reversing valves; 13: Third group of reversing valves; 14: first working engine; 15: second working engine; 16: third working engine; 17: fourth working engine; 18: fifth working engine; 19: sixth working engine; 20: seventh working engine; 21: eighth working motor; 22: ninth working motor; 23: bypass valve; 24: auxiliary pump; 25: manual reversing valve; 26: integrated valve; and 27: sequence valve. Detailed Description of the Invention

[0026] The following specific examples illustrate embodiments of the present application. Skilled in the art can easily understand other advantages and effects of the present application from the content disclosed herein. Obviously, the examples described are parts of the embodiments of the present application, not all of them. Based on the examples in the present application, all other examples obtained by ordinary technicians in the field, without creative work, are within the scope of the present application. Petition 870250053222, dated 06 / 25 / 2025, page 15 / 37 9 / 12 scope of protection of this application.

[0027] With reference to Figures 1-6, a hydraulic system of a sugarcane harvesting and stacking machine, provided by an example of the present application, comprises a body of the sugarcane harvesting and stacking machine, a hydraulic displacement system, a hydraulic system of the working device and a hydraulic system of the auxiliary device.

[0028] The body of the sugarcane harvesting and stacking machine comprises a front conveyor 1, a rear conveyor 2, a silo 3, a collection guard 4, a platform 5, a root cutting device 6, a collection guard oil cylinder 7, a hopper lifting oil cylinder 8 and a door opening and closing oil cylinder 9, which are basic structures of an existing machine and are therefore not redundantly described here.

[0029] (1) The hydraulic drive system drives a drive wheel with 45HST, as shown in FIGS. 1 and 6. The drive wheel drives a drive track so that the machine moves forward and backward.

[0030] (2) The hydraulic system of the working device is driven separately by the working oil ports P1 and P2 of the duplex pump 10, and the duplex pump 10 is supplied with oil by a hydraulic oil tank.

[0031] As shown in FIG. 4. The first working oil port P1 of the duplex pump 10 is configured to control, through the first group of reversing valves 11, the operation of the first working motor 14 to the sixth working motor 19, wherein the first working motor 14, the second working motor 15, the third working motor 16, the fourth working motor 17, the fifth working motor 18 and the sixth working motor 19 are connected Petition 870250053222, dated 06 / 25 / 2025, page 16 / 37 10 / 12 motors are connected in series to operate in parallel. The first group of reversing valves 11 is configured to set the highest working pressure of the working system of the first working oil port P1 of the duplex pump 10 and to control the rotation directions of the motors. Each hydraulic motor is capable of performing forward and reverse rotations. The first working motor 14 and the second working motor 15 are mounted on a cutting head for root cutting. The third working motor 16 and the fourth working motor 17 are mounted on a drive shaft of a conveyor belt of the front conveyor 1, and the fifth working motor 18 and the sixth working motor 19 are mounted on a drive shaft of the rear conveyor 2.The left and right parts of the conveyor belt of the front conveyor 1 and the conveyor belt of the rear conveyor 2 are closely matched with a long matching length, and synchronous transmission can be achieved by mutual friction in a working process, so that the third working motor 16 and the fourth working motor 17 have the same rotational speed, and the fifth working motor 18 and the sixth working motor 19 have the same rotational speed. The first working motor 14 and the second working motor 15 are connected in series with the third working motor 16, the fourth working motor 17, the fifth working motor 18, and the sixth working motor 19, so that their rotational speeds are the same, since the flow through a series oil circuit is the same (regardless of the volumetric efficiency characteristics of the hydraulic components).By restricting the conveyor belts of the front conveyor and the rear conveyor 2, the synchronization of the rotational speeds of the hydraulic motors is achieved in various parts of the root cutting and transport processes of the sugarcane harvesting and stacking machine. This synchronous connection is semi-rigid. Petition 870250053222, dated 06 / 25 / 2025, p. 17 / 37 11 / 12 which can ensure consistent rotation speeds of the cutting head for root cutting and conveying components during normal harvesting. When the feed quantity is too large, a conveying channel is blocked and the conveyor belts can slip relatively to prevent the conveying components from being damaged by excessive force. In a harvesting process, to adjust the harvesting speed, a bypass valve 23 is arranged at the outlet of port P1 of the working pump and communicates directly with an oil tank. When the conveyor belt rotation speed is too high, the rotation speed can be reduced to a suitable range by adjusting the bypass valve 23 to directly discharge a portion of the hydraulic oil back to the oil tank. The use of the bypass valve 23 to adjust the speed will not cause a reduction in the working circuit pressure, which would otherwise affect harvesting.

[0032] The second working oil port P2 of the duplex pump 10 is configured to control, by means of the second group of reversing valves 12 and the third group of reversing valves 13, the work of the seventh working motor 20, the eighth working motor 21 and the ninth working motor 22. The second group of reversing valves 12 is configured to set a higher working pressure of a working system of the second working oil port P2 of the duplex pump 10 and control the directions of rotation of the seventh working motor 20, the eighth working motor 21 and the ninth working motor 22, and each hydraulic motor is capable of rotating forward and backward, wherein the seventh working motor 20 is configured to drive the conveyor belt to rotate, assisting in the transport of the sugarcane to ascend.The eighth working motor 21 and the ninth working motor 22 are connected in series to drive a sugarcane collection guard at the front of the platform 5. Petition 870250053222, dated 06 / 25 / 2025, page 18 / 37 12 / 12

[0033] (3) Auxiliary device hydraulic system:

[0034] It is mainly composed of an auxiliary pump 24, a manual reversing valve 25, an integrated valve 26, a sequential valve 27, a hydraulic oil cylinder, etc., the model of the integrated valve 26 being model W2.5DD-05DC-17-01C, supplied by Jiangsu Zhenji Machinery Manufacturing Co., Ltd.

[0035] As shown in FIG. 5, the auxiliary pump oil 24 is supplied to the manual reversing valve 25 and the integrated valve 26, the integrated valve 26 being configured to control the direction of the harvesting and stacking machine and an oil cylinder of the machine platform 5. Silo 3 is used for the oil lifting cylinder and for the door opening and closing cylinder 9, and the sequence of actions of the silo lifting cylinder 3 and the door opening and closing cylinder 9 is controlled by the sequence valve 27. Two sets of actions, namely, the raising and lowering of silo 3 and the opening and closing of the door, are performed by hydraulic oil in a single path.

[0036] The specific embodiments above provide a more detailed explanation of the purpose, technical solutions, and beneficial effects of this application. It should be understood that the examples above are only specific embodiments of this application and are not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, and the like made based on the technical solutions of this application should be included within the scope of protection of this application. Petition 870250053222, dated 06 / 25 / 2025, page 19 / 37

Claims

1 / 4 CLAIMS 1. Hydraulic system of a sugarcane harvesting and stacking machine, characterized in that it comprises a body of the sugarcane harvesting and stacking machine, a hydraulic displacement system, a hydraulic system of the working device and a hydraulic system of the auxiliary device; wherein the body of the sugarcane harvesting and stacking machine comprises a front conveyor belt (1), a rear conveyor belt (2), a silo (3), a collection guard (4), a platform (5), a root cutting device (6), an oil cylinder of the collection guard (7), an oil cylinder of the hopper lifting (8) and an oil cylinder of the door opening and closing (9);The hydraulic system of the working device comprises a duplex pump (10), a first group of reversing valves (11), a second group of reversing valves (12), a third group of reversing valves (13), a first working motor (14), a second working motor (15), a third working motor (16), a fourth working motor (17), a fifth working motor (18), a sixth working motor (19), a seventh working motor (20), an eighth working motor (21), a ninth working motor (22) and a bypass valve (23); the hydraulic system of the working device is driven separately by a first working oil port P1 and a second working oil port P2 of the duplex pump (10); the duplex pump (10) is supplied with oil by a hydraulic oil tank;the first working oil port P1 of the duplex pump (10) is configured to control, through the first group of reversing valves (11), the work of the first working motor (14), the second working motor (15), the third working motor (16), the fourth working motor (17), the fifth working motor (18) and the sixth working motor (19); the first working motor (14), the third working motor (16) and the fifth working motor (18) are connected in series with the second working motor (15), the fourth working motor (17) and the sixth working motor (19) to work in parallel; the first group of reversing valves (11) is configured to set a higher working pressure of a working system of the first working oil port P1 of the duplex pump (10) and to control the directions of rotation of the motors;the first working motor (14), the second working motor (15), the third working motor (16), the fourth working motor (17), the fifth working motor (18) and the sixth working motor (19) are all capable of performing forward and backward rotation; the first working motor (14) and the second working motor (15) are mounted on a cutting head of the root cutting device (6); the third working motor (16) and the fourth working motor (17) are mounted on a drive shaft of a conveyor belt of the front conveyor (1); the fifth working motor (18) and the sixth working motor (19) are mounted on a drive shaft of a conveyor belt of the rear conveyor (2); and the bypass valve (23) is disposed in an outlet of the first working oil port P1 of the duplex pump (10) and is directly connected to the oil tank;the second working oil port P2 of the duplex pump (10) is configured to control, by means of the second group of reversing valves (12) and the third group of reversing valves (13), the work of the seventh working motor (20), the eighth working motor (21) and the ninth working motor (22); the second group of reversing valves (12) is configured to set a higher working pressure of a working system of the second working oil port P2 of the duplex pump (10) and to control the directions of rotation of the seventh working motor (20), the eighth working motor (21) and the ninth working motor (22);The seventh working motor (20), the eighth working motor (21) and the ninth working motor (22) are all capable of achieving forward and backward rotation, wherein the seventh working motor (20) is configured to drive the conveyor belt to rotate, assisting in transporting the sugarcane to ascend; and the eighth working motor (21) and the ninth working motor (22) are connected in series to drive the collection guard (4) at the front of the platform (5).

2. Hydraulic system of a sugarcane harvesting and stacking machine, according to claim 1, characterized in that the hydraulic displacement system drives a drive wheel with a variable speed hydraulic transmission device of model 45HST, and the drive wheel drives a conveyor belt to move the machine forward and backward.

3. Hydraulic system of a sugarcane harvesting and stacking machine, according to claim 1, characterized in that the hydraulic system of the auxiliary device comprises an auxiliary pump (24), a manual reversing valve (25), an integrated valve (26), a sequential valve (27) and a hydraulic oil cylinder; the oil from the auxiliary pump (24) is supplied to the manual reversing valve (25) and the integrated valve (26); the integrated valve (26) is configured to control the direction of the sugarcane harvesting and stacking machine and an oil cylinder of the machine's platform (5); the silo (3) is used for a lifting oil cylinder and the door opening and closing oil cylinder (9); a sequence of actions of the lifting oil cylinder and the door opening and closing oil cylinder (9) is controlled by the sequential valve (27); and two sets of actions, namely, the elevation and Petition 870250053222, dated 06 / 25 / 2025, page.22 / 37 4 / 4 lowering of the silo (3) and the opening and closing of the door are performed by hydraulic oil in a single stroke.

4. Hydraulic system of a sugarcane harvesting and stacking machine, according to claim 1, characterized in that the left and right parts of the conveyor belt of the front conveyor (1) and the conveyor belt of the rear conveyor (2) are closely matched with a long matching length, and synchronous transmission is capable of being achieved by mutual friction in a working process. Petition 870250053222, dated 06 / 25 / 2025, p. 23 / 37

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