Rake hydraulic system

Abstract

The utility model discloses a material rake hydraulic system which comprises a first oil pipe, a second oil pipe, a proportional electromagnetic valve, a first connecting oil pipe, a second connecting oil pipe, a hydraulic cylinder and a digital quantity axis controller, and the first oil pipe, the second oil pipe, the first connecting oil pipe and the second connecting oil pipe are all connected with the proportional electromagnetic valve. A first high-pressure ball valve and a pressure gauge are sequentially arranged on the first oil pipe, and a one-way valve is arranged on the second oil pipe; the hydraulic cylinder is reasonable in structural design, the hydraulic cylinder has a buffering function in the left-right moving process of the material rake, impact generated in the hydraulic cylinder when the material rake moves is reduced, noise can be reduced, the service life of the hydraulic cylinder is prolonged, and continuous and stable operation of the material rake is facilitated.

Description

Technical Field

[0001] The utility model relates to the field of production equipment, in particular to a material rake hydraulic system. Background Art

[0002] Material piles usually require the use of a material rake to rake the materials apart. Traditional material rakes usually use a sampling hydraulic cylinder to control the rake to move left and right to rake the materials. When the hydraulic cylinder drives the rake to move left and right, the hydraulic cylinder itself does not have a buffering function, resulting in a large impact force on the hydraulic cylinder when the plug inside the hydraulic cylinder moves left and right, which easily causes a lot of noise, and easily damages the hydraulic cylinder, which is not conducive to the continuous and stable operation of the rake. Therefore, improvements are still needed. Utility Model Content

[0003] In order to solve the above-mentioned problems, the utility model provides a material rake hydraulic system, comprising a first oil pipe, a second oil pipe, a proportional solenoid valve, a first connecting oil pipe, a second connecting oil pipe, a hydraulic cylinder and a digital axis controller, the first oil pipe, the second oil pipe, the first connecting oil pipe and the second connecting oil pipe are all connected to the proportional solenoid valve, the first oil pipe is provided with a first high-pressure ball valve and a pressure gauge in sequence, the second oil pipe is provided with a one-way valve, the first connecting oil pipe is provided with a first superimposed hydraulically controlled one-way valve and a second high-pressure ball valve in sequence, the end of the first connecting oil pipe is connected to the hydraulic cylinder, the second connecting oil pipe is provided with a second superimposed hydraulically controlled one-way valve and a second high-pressure ball valve in sequence, the end of the second connecting oil pipe is connected to the hydraulic cylinder, a moving rod is horizontally arranged in the hydraulic cylinder, a plug is arranged on the moving rod, a displacement sensor is arranged at one end of the moving rod, and the digital axis controller is respectively connected to the displacement sensor and the proportional solenoid valve.

[0004] Preferably, the first superimposed hydraulically controlled one-way valve and the second superimposed hydraulically controlled one-way valve are connected to each other.

[0005] The beneficial effects of the utility model are as follows: the utility model has a reasonable structural design, and can enable the hydraulic cylinder to have a buffer function during the left and right movement of the material rake, thereby reducing the impact generated inside the hydraulic cylinder when the material rake moves, and can also reduce noise, thereby increasing the service life of the hydraulic cylinder, which is beneficial to the continuous and stable operation of the material rake. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] The present invention will be described by way of examples with reference to the accompanying drawings, in which:

[0007] Figure 1 It is a system flow chart of the utility model;

[0008] Figure 2 It is a schematic diagram of the buffer movement of the hydraulic cylinder of the utility model;

[0009] In the figure: 1. first oil pipe; 2. second oil pipe; 3. first high-pressure ball valve; 4. one-way valve; 5. pressure gauge; 6. proportional solenoid valve; 7. first superimposed hydraulic one-way valve; 8. second superimposed hydraulic one-way valve; 9. first connecting oil pipe; 10. second connecting oil pipe; 11. second high-pressure ball valve; 12. hydraulic cylinder; 13. plug; 14. moving rod; 15. displacement sensor; 16. digital axis controller. DETAILED DESCRIPTION

[0010] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0011] Any feature of this specification, unless otherwise specified, can be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise specified, each feature is only an example of a series of equivalent or similar features.

[0012] like Figure 1 The hydraulic system of a material rake shown in the figure comprises a first oil pipe 1, a second oil pipe 2, a proportional solenoid valve 6, a first connecting oil pipe 9, a second connecting oil pipe 10, a hydraulic cylinder 12 and a digital axis controller 6, wherein the first oil pipe 1, the second oil pipe 2, the first connecting oil pipe 9 and the second connecting oil pipe 10 are all connected to the proportional solenoid valve 6, the first oil pipe 1 is provided with a first high-pressure ball valve 3 and a pressure gauge 5 in sequence, the second oil pipe 2 is provided with a check valve 4, the first connecting oil pipe 9 is provided with a first superimposed hydraulically controlled check valve 7 and a first pressure gauge 5 in sequence, Two high-pressure ball valves 11, the end of the first connecting oil pipe 9 is connected to the hydraulic cylinder 12, the second connecting oil pipe 10 is sequentially provided with a second superimposed hydraulically controlled one-way valve 8 and a second high-pressure ball valve 11, the end of the second connecting oil pipe 10 is connected to the hydraulic cylinder 12, a moving rod 14 is horizontally arranged in the hydraulic cylinder 12, a plug 13 is arranged on the moving rod 14, a displacement sensor 15 is arranged at one end of the moving rod 14, and the digital axis controller 16 is respectively connected to the displacement sensor 15 and the proportional solenoid valve 6.

[0013] The first superimposed hydraulically controlled one-way valve 7 and the second superimposed hydraulically controlled one-way valve 8 are connected to each other.

[0014] The proportional solenoid valve 6 is a three-position four-way reversing valve.

[0015] During use, oil enters through the first oil pipe 1 and passes through the proportional solenoid valve 6. At this time, the proportional solenoid valve 6 is in a straight-through form, so the oil in the first oil pipe 1 will flow into the first connecting pipe 9, and then pass through the first superimposed hydraulically controlled one-way valve 7 and the second high-pressure ball valve 11 on the first connecting pipe 9 in sequence to transport the oil into the hydraulic cylinder 12 to push the plug 13 to move rightward, and further drive the moving rod 14 to move rightward. When the oil passes through the first superimposed hydraulically controlled one-way valve 7, since the first superimposed hydraulically controlled one-way valve 7 and the second superimposed hydraulically controlled one-way valve 8 are connected to each other, the first superimposed hydraulically controlled one-way valve 7 and the second superimposed hydraulically controlled one-way valve 8 will be opened at the same time; Figure 2 As shown, before reaching the preset distance, the moving speed of the plug 13 is relatively fast, that is, the moving speed of the moving distance a is relatively fast. When the displacement sensor 15 senses that the plug 13 has moved to the preset distance, it will transmit a signal to the digital axis controller 16 and let the digital axis controller 16 control the opening size of the proportional solenoid valve 6, so that the speed of the plug 13 gradually slows down when exceeding the preset distance, that is, the moving speed of the moving distance b gradually slows down, thereby playing a buffering role to prevent the plug 13 from hitting the hydraulic cylinder 12 with excessive force; when the plug 13 moves to the right, the oil on the right side of the plug 13 will be discharged into the second connecting pipe 10 and flow into the proportional solenoid valve 6 through the second high-pressure ball valve 11 and the second superimposed hydraulic control one-way valve 8 in turn, and then flow into the second oil pipe 2 through the proportional solenoid valve 6 for discharge, thereby completing the rightward movement of the material rake.

[0016] After the material rake moves to the right, the oil enters through the first oil pipe 1 and passes through the proportional solenoid valve 6. At this time, the proportional solenoid valve 6 is changed to a cross-connected form, so the oil in the first oil pipe 1 will flow into the second connecting rod 10, and then pass through the second superimposed hydraulically controlled one-way valve 8 and the second high-pressure ball valve 11 on the second connecting pipe 10 in turn, and the oil is transported into the hydraulic cylinder 12 to push the plug 13 to move to the left, and further drive the moving rod 14 to move to the left. When the oil passes through the second superimposed hydraulically controlled one-way valve 8, the first superimposed hydraulically controlled one-way valve 7 and the second superimposed hydraulically controlled one-way valve 8 are connected to each other, so the first superimposed hydraulically controlled one-way valve 7 and the second superimposed hydraulically controlled one-way valve 8 will be opened at the same time; when the preset distance is not reached, the moving speed of the plug 13 is relatively fast, that is, the moving distance a speed The speed is relatively fast. When the displacement sensor 15 senses that the plug 13 has moved to a preset distance, it will transmit a signal to the digital axis controller 16 and let the digital axis controller 16 control the opening size of the proportional solenoid valve 6, so that the speed of the plug 13 gradually slows down when it exceeds the preset distance, that is, the speed of the moving distance b gradually slows down, thereby playing a buffering role to prevent the plug 13 from hitting the hydraulic cylinder 12 with too much force; when the plug 13 moves to the left, the oil on the left side of the plug 13 will be discharged into the first connecting pipe 9 and flow into the proportional solenoid valve 6 through the second high-pressure ball valve 11 and the first superimposed hydraulic one-way valve 7 in turn, and then flow into the second oil pipe 2 through the proportional solenoid valve 6 for discharge, thereby completing the leftward movement of the material rake, and the left and right movements of the material rake are repeated in this sequence.

[0017] The beneficial effects of the utility model are as follows: the utility model has a reasonable structural design, and can enable the hydraulic cylinder to have a buffer function during the left and right movement of the material rake, thereby reducing the impact generated inside the hydraulic cylinder when the material rake moves, and can also reduce noise, thereby increasing the service life of the hydraulic cylinder, which is beneficial to the continuous and stable operation of the material rake.

[0018] The present invention is not limited to the above-mentioned specific implementation modes, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A hydraulic system for a material rake, characterized in that: The invention comprises a first oil pipe (1), a second oil pipe (2), a proportional solenoid valve (6), a first connecting oil pipe (9), a second connecting oil pipe (10), a hydraulic cylinder (12) and a digital axis controller (16); the first oil pipe (1), the second oil pipe (2), the first connecting oil pipe (9) and the second connecting oil pipe (10) are all connected to the proportional solenoid valve (6); a first high-pressure ball valve (3) and a pressure gauge (5) are sequentially arranged on the first oil pipe (1); a check valve (4) is arranged on the second oil pipe (2); a first superimposed hydraulic control check valve (7) and a second high-pressure ball valve (5) are sequentially arranged on the first connecting oil pipe (9); The invention relates to a hydraulic cylinder (12) and a proportional solenoid valve (6). The first connecting oil pipe (9) has an end connected to the hydraulic cylinder (12). The second connecting oil pipe (10) is provided with a second superimposed hydraulically controlled one-way valve (8) and a second high-pressure ball valve (11) in sequence. The second connecting oil pipe (10) has an end connected to the hydraulic cylinder (12). A moving rod (14) is transversely arranged in the hydraulic cylinder (12). A plug (13) is arranged on the moving rod (14). A displacement sensor (15) is arranged at one end of the moving rod (14). The digital axis controller (16) is respectively connected to the displacement sensor (15) and the proportional solenoid valve (6).

2. A material rake hydraulic system according to claim 1, characterized in that: The first stacked hydraulically controlled one-way valve (7) and the second stacked hydraulically controlled one-way valve (8) are connected to each other.

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