One-rod control material box unloading hydraulic system of crawler-type sugarcane pile cutting machine

Abstract

The utility model provides a crawler-type sugarcane pile-cutting machine one-rod control workbin unloading hydraulic system which comprises a chassis, a workbin is installed at the top end of the chassis, workbin lifting oil cylinders for controlling the workbin to ascend and descend are installed on the chassis and located on the two sides of the workbin, two symmetrical material doors are arranged at the bottom of the workbin, and the workbin lifting oil cylinders are arranged on the chassis and located on the two sides of the workbin. Material door opening and closing oil cylinders are installed on the two sides of the material box, and the material box lifting oil cylinder and the material door opening and closing oil cylinders are controlled by controlling the material box discharging hydraulic system through a rod. The one-rod control material box unloading hydraulic system further comprises a first sequence valve, a second sequence valve and a one-link valve group. The hydraulic control system is free of electrical elements, cost is reduced, fault points are reduced, unloading and withdrawing of the material box and opening and closing of the material door can be completed through one control rod, misoperation is avoided, the number of the control rods or buttons is reduced, the whole hydraulic system is mature and stable, the action response is sensitive, and action control and sugarcane harvesting can be efficiently completed.

Description

Technical Field

[0001] The utility model relates to the field of sugarcane harvester and buncher, in particular to a hydraulic system for unloading a material box with a rod operated by a crawler type sugarcane harvester and buncher. Background Art

[0002] At present, the material box of the sugarcane harvester on the market can only unload on one side. Due to this limitation, the harvester cannot perform reciprocating harvesting, which leads to an increase in vehicle costs and greatly reduces the harvesting efficiency. To solve this problem, we have improved the material box to unload in the same direction as the harvesting direction. At this time, the action required for unloading increases, and this solution is designed for this purpose.

[0003] At present, the material box lifting cylinder and the material door opening and closing cylinder are usually two groups of cylinders, and the general operation method is to use manual two-way valve or electric two-way valve to control them separately; according to the working requirements of the material box, during the unloading process, the two groups of cylinders need to act in sequence, that is, after the material box is full, first lift the material box to the top, and then open the material door to unload; after unloading, first close the material door, and then retract the material box. Manual or electric two-way valve control, because there are two joysticks or two groups of buttons, it is easy to cause erroneous actions; if the unloading and retraction actions are not completed in sequence, the material in the material box will not be unloaded cleanly or cannot be unloaded, the material box will hit the chassis, causing damage to the material box, etc. Utility Model Content

[0004] The utility model aims to provide a crawler type sugarcane harvester and stacker one-lever operated material box unloading hydraulic system to overcome the above problems or at least partially solve the above problems.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the utility model is specifically implemented as follows:

[0006] The utility model provides a one-lever operated material box unloading hydraulic system for a crawler type sugarcane harvester and buncher, comprising a chassis, a material box is installed on the top of the chassis, material box lifting oil cylinders for controlling the lifting of the material box are installed on the chassis and on both sides of the material box, two symmetrical material doors are arranged at the bottom of the material box, material door opening and closing oil cylinders are installed on both sides of the material box, and the material box lifting oil cylinders and the material door opening and closing oil cylinders are controlled by the one-lever operated material box unloading hydraulic system;

[0007] The one-lever operated hydraulic system for unloading a material box also includes a first sequence valve, a second sequence valve and a valve group. The B port of the valve group is connected to the oil inlet of the first sequence valve through a hydraulic oil circuit, and the B port of the valve group is also connected to the rodless chamber of the material box lifting cylinder through a hydraulic oil circuit. The oil outlet of the first sequence valve is connected to the rod chamber of the material gate opening and closing cylinder through a hydraulic oil circuit, and the A port of the valve group is connected to the rodless chamber of the material gate opening and closing cylinder through a hydraulic oil circuit. The A port of the valve group is also connected to the oil inlet of the second sequence valve through a hydraulic oil circuit, and the oil outlet of the second sequence valve is connected to the rod chamber of the material box lifting cylinder through a hydraulic oil circuit.

[0008] As a further solution of the utility model, each of the material door opening and closing cylinders is used to control a material door closest to it.

[0009] As a further solution of the utility model, a first hydraulically controlled one-way valve is further arranged between the B port of the one-valve group and the oil inlet for controlling the extension of the material box lifting cylinder, and a second hydraulically controlled one-way valve is further arranged between the A port of the one-valve group and the rodless chamber of the material door opening and closing cylinder.

[0010] As a further solution of the utility model, the valve group is provided with two oil outlets, namely, port A and port B.

[0011] The utility model provides a crawler type sugarcane harvester and buncher one-lever operated material box unloading hydraulic system, the beneficial effects are:

[0012] 1. This hydraulic system is mainly composed of a manual valve group, a first sequence valve, a second sequence valve, a material box lifting cylinder and a material door opening and closing cylinder. It has no electrical components, which reduces costs and failure points. One joystick can complete the material box unloading and retraction and the material door opening and closing actions, avoiding erroneous operations and reducing the number of joysticks or buttons.

[0013] 2. The entire hydraulic system is relatively mature and stable, with sensitive response, and can efficiently complete motion control and sugarcane harvesting. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 This is a plan view of the material box in the utility model when it is in the initial position.

[0016] Figure 2 This is a three-dimensional diagram of the utility model when the material box is located at the initial position.

[0017] Figure 3 This is a plan view of the material box in the utility model when it is raised to the highest position.

[0018] Figure 4 This is a three-dimensional diagram of the utility model when the material box is raised to the highest position.

[0019] Figure 5 This is a plan view of the utility model when the middle material door is opened for unloading.

[0020] Figure 6 This is a three-dimensional diagram of the utility model when the middle material door is opened for unloading.

[0021] Figure 7 This is the principle diagram of the hydraulic system for unloading material boxes by operating a single lever in the utility model.

[0022] In the figure: 1. chassis; 2. material box; 3. material box lifting cylinder; 4. material door; 5. material door opening and closing cylinder; 6. first sequence valve; 7. second sequence valve; 8. one-valve group. DETAILED DESCRIPTION

[0023] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0024] See also Figure 1-7 The utility model provides a crawler type sugarcane harvester and buncher one-lever operated material box unloading hydraulic system, comprising a chassis 1, a material box 2 is installed on the top of the chassis 1, and material box lifting cylinders 3 for controlling the lifting of the material box 2 are installed on the chassis 1 and on both sides of the material box 2. Two symmetrical material doors 4 are arranged at the bottom of the material box 2, and material door opening and closing cylinders 5 are installed on both sides of the material box 2. The material box lifting cylinder 3 and the material door opening and closing cylinder 5 are controlled by the one-lever operated material box unloading hydraulic system;

[0025] The single-lever operated material box unloading hydraulic system also includes a first sequence valve 6, a second sequence valve 7 and a valve group 8. The B port of the valve group 8 is connected to the oil inlet of the first sequence valve 6 through a hydraulic oil circuit, and the B port of the valve group 8 is also connected to the rodless chamber of the material box lifting cylinder 3 through a hydraulic oil circuit. The oil outlet of the first sequence valve 6 is connected to the rod chamber of the material gate opening and closing cylinder 5 through a hydraulic oil circuit, and the A port of the valve group 8 is connected to the rodless chamber of the material gate opening and closing cylinder 5 through a hydraulic oil circuit. The A port of the valve group 8 is also connected to the oil inlet of the second sequence valve 7 through a hydraulic oil circuit, and the oil outlet of the second sequence valve 7 is connected to the rod chamber of the material box lifting cylinder 3 through a hydraulic oil circuit.

[0026] Each material door opening and closing cylinder 5 is used to control a material door 4 closest to it.

[0027] A first hydraulically controlled one-way valve is also arranged between the B port of the valve group 8 and the oil inlet for controlling the extension of the material box lifting cylinder 3. A second hydraulically controlled one-way valve is also arranged between the A port of the valve group 8 and the rodless chamber of the material door opening and closing cylinder 5. Two oil outlets are arranged on the valve group 8, namely port A and port B.

[0028] Figure 1-6 They are the three main positions for unloading and resetting the material box 2. In the figure, there is one material box lifting cylinder 3 on each side, one material door opening and closing cylinder 5 on each side, one material box 2, and one material door 4 on each side. Figure 1-2 The material box 2 is in the state of falling onto the chassis 1, at which time the material box lifting cylinder 3 is retracted and the material door opening and closing cylinder 5 is extended; Figure 1 is the initial position plan of the material box 2, Figure 2 It is a stereoscopic view of the initial position of the material box 2;

[0029] Figure 3-4 The material box 2 is raised to the highest position, and the material door 4 has not yet been opened. At this time, the material box lifting cylinder 3 is extended, and the material door opening and closing cylinder 5 is extended; Figure 3 For the plan view, Figure 4 For stereoscopic view;

[0030] Figure 5-6 The material box 2 is raised to the highest position, and the material door 4 is opened for unloading. At this time, the material box lifting cylinder 3 extends, and the material door opening and closing cylinder 5 retracts; Figure 5 For the plan view, Figure 6 For a stereoscopic view.

[0031] During the use of the utility model, the hydraulic system is mainly composed of a manual valve group 8 or (one-way electromagnetic reversing valve), a first sequence valve 6, a second sequence valve 7, a material box lifting cylinder 3 and a material door opening and closing cylinder 5;

[0032] Figure 7 This is the principle diagram of the hydraulic system for one-lever operated material box unloading: When unloading begins, operate the valve group 8 or (solenoid reversing valve) to allow high-pressure oil to enter port B, then the material box lifting cylinder 3 extends to push the material box 2 to lift. When the material box lifting cylinder 3 extends to the limit position, that is, the material box 2 is in Figure 3-4 When the material box is in the upper position, the hydraulic oil pressure in the material box lifting cylinder 3 increases to reach the set pressure of the first sequence valve 6, and the hydraulic oil passes through the first sequence valve 6 to reach the rod chamber of the material door opening and closing cylinder 5, so that the material door 4 at the bottom of the material box 2 is opened, that is, Figure 5-6 Position, bin 2 unloading;

[0033] When the material box 2 is reset, operate the first valve group 8 or (solenoid reversing valve) to allow high-pressure oil to enter port A. At this time, the rodless chamber of the material door opening and closing cylinder 5 enters high-pressure oil, and the left and right material doors 4 are closed. When the material door 4 is closed to the 3-4 position, the hydraulic oil pressure in the rodless chamber of the material door opening and closing cylinder 5 increases to reach the set pressure of the second sequence valve 7. The hydraulic oil reaches the rod chamber of the material box lifting cylinder 3 through the second sequence valve 7. The material box lifting cylinder 3 is retracted, and the material box 2 is lowered. When the material box 2 is lowered back to Figure 1-2 Position, release the operating handle to complete the reset action of material box 2;

[0034] This hydraulic system has no electrical components, which reduces costs and failure points. One joystick can complete the unloading and retraction of the material box 2 and the opening and closing of the material door 4, avoiding erroneous operations and reducing the number of joysticks or buttons. The entire hydraulic system is relatively mature and stable, with sensitive action responses, and can efficiently complete action control and sugarcane harvesting.

[0035] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A crawler type sugarcane harvester and buncher one-lever operated bin unloading hydraulic system, comprising a chassis (1), characterized in that: A material box (2) is installed at the top of the chassis (1), and a material box lifting cylinder (3) for controlling the lifting and lowering of the material box (2) is installed on the chassis (1) and on both sides of the material box (2). Two symmetrical material doors (4) are arranged at the bottom of the material box (2), and a material door opening and closing cylinder (5) is installed on both sides of the material box (2). The material box lifting cylinder (3) and the material door opening and closing cylinder (5) are controlled by a lever to operate the material box unloading hydraulic system; The one-rod operated material box unloading hydraulic system also includes a first sequence valve (6), a second sequence valve (7) and a valve group (8), wherein the B port of the valve group (8) is connected to the oil inlet of the first sequence valve (6) through a hydraulic oil circuit, and the B port of the valve group (8) is also connected to the rodless chamber of the material box lifting cylinder (3) through a hydraulic oil circuit. The oil outlet of the first sequence valve (6) is connected to the rod chamber of the material gate opening and closing cylinder (5) through a hydraulic oil circuit, and the A port of the valve group (8) is connected to the rodless chamber of the material gate opening and closing cylinder (5) through a hydraulic oil circuit. The A port of the valve group (8) is also connected to the oil inlet of the second sequence valve (7) through a hydraulic oil circuit, and the oil outlet of the second sequence valve (7) is connected to the rod chamber of the material box lifting cylinder (3) through a hydraulic oil circuit.

2. A crawler type sugarcane harvester and buncher one-lever operated material box unloading hydraulic system according to claim 1, characterized in that: Each of the material door opening and closing cylinders (5) is used to control a material door (4) closest to it.

3. A crawler type sugarcane harvester and buncher one-lever operated material box unloading hydraulic system according to claim 1, characterized in that: A first hydraulically controlled one-way valve is also provided between the B port of the valve group (8) and the oil inlet for controlling the extension of the material box lifting cylinder (3), and a second hydraulically controlled one-way valve is also provided between the A port of the valve group (8) and the rodless chamber of the material door opening and closing cylinder (5).

4. A crawler type sugarcane harvester and buncher one-lever operated material box unloading hydraulic system according to claim 1, characterized in that: The single valve group (8) is provided with two oil outlets, namely, port A and port B.

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