Ditching depth adjusting device of ditcher

Abstract

The utility model relates to the technical field of ditchers, in particular to a ditching depth adjusting device of a ditcher, which is characterized in that a hydraulic oil cylinder is communicated with a reversing valve through a first connecting pipe, the reversing valve is communicated to the hydraulic oil cylinder through a guide pipe, the guide pipe is communicated with a one-way valve, a fixed frame is fixedly connected with an oil pump, and the fixed frame is fixedly connected with an oil tank; the inlet end of the oil pump communicates with the oil tank through a second connecting pipe. After the oil pump is started, oil in the oil tank is pumped out through the second connecting pipe, the pumped oil is guided into the reversing valve through the third connecting pipe, oil in the reversing valve is guided into the hydraulic oil cylinder through the guide pipe, the telescopic end on the hydraulic oil cylinder drives the depth limiting wheel to extend downwards, and the stroke sensor measures the extending distance of the depth limiting wheel. The guide pipe is communicated with the one-way valve, the one-way valve prevents oil in the guide pipe from flowing back into the reversing valve, the depth limiting wheel is kept stable after extending downwards by a set length, and the contact stability of the depth limiting wheel and the ditching face is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ditch openers, in particular to a ditch opening depth adjusting device for a ditch opener. Background Art

[0002] In the fields of agricultural water conservancy and agricultural production, in order to meet the requirements of agricultural planting for ditch opening and water-saving irrigation, ditch opening operations are often required. In the past, manual ditch digging was usually adopted, but manual ditch digging has a high labor intensity and low ditch quality. With the improvement of the mechanization level, the emergence of ditch openers has replaced manual operations, improving work efficiency and reducing people's labor intensity. When a ditch opener digs a ditch in the land, it is necessary to adjust and limit the depth of the ditch opening. When the existing adjustment and limit device adjusts and limits the depth of the ditch opening knife, it is easy to shake during the limiting process, reducing the stability of the depth limit. Summary of the Utility Model

[0003] The purpose of the utility model is to solve the problem that it is easy to shake during the limiting process in the prior art, reducing the stability of the depth limit, and to provide a ditch opening depth adjusting device for a ditch opener.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] Design a ditch opening depth adjusting device for a ditch opener, including a fixed frame. A hydraulic cylinder is fixedly connected to the bottom end of the fixed frame. A stroke sensor is connected to the hydraulic cylinder. A depth limiting wheel is fixedly connected to the telescopic end of the hydraulic cylinder. The hydraulic cylinder is communicated with a reversing valve through a first connecting pipe. The reversing valve is communicated to the hydraulic cylinder through a conduit. A check valve is communicated with the conduit. An oil pump is fixedly connected to the fixed frame. A fuel tank is fixedly connected to the fixed frame. The inlet end of the oil pump is communicated with the fuel tank through a second connecting pipe. The outlet of the oil pump is communicated with the reversing valve through a third connecting pipe. The reversing valve is communicated with the fuel tank through a fourth connecting pipe.

[0006] Preferably, a connecting plate is fixedly connected to the upper end of the fixed frame.

[0007] Preferably, a scraping mechanism for cleaning the bottom end of the depth limiting wheel is connected to the bottom end of the fixed frame. The scraping mechanism includes a mounting block. The mounting block is fixedly connected to the bottom end of the fixed frame. An electric telescopic rod is fixedly connected to the mounting block. A scraping plate is fixedly connected to the telescopic end of the electric telescopic rod. The upper end of the scraping plate can be in contact with the bottom end of the depth limiting wheel.

[0008] Preferably, an inclined surface is provided at the upper end of the scraping plate.

[0009] Preferably, a retaining pipe is fixedly connected to the upper end of the depth-limiting wheel, and a baffle is fixedly connected to the bottom end of the fixing frame. The baffle is located outside the fixing frame.

[0010] The trench digging depth adjustment device of the trench digger proposed by the present utility model has the beneficial effects that:

[0011] After the oil pump is started, the oil in the fuel tank is pumped out through the second connecting pipe. The pumped oil is introduced into the reversing valve through the third connecting pipe. The oil in the reversing valve is introduced into the hydraulic cylinder through the conduit. The telescopic end of the hydraulic cylinder drives the depth-limiting wheel to extend downward. The travel sensor measures the extension distance of the depth-limiting wheel. A check valve is connected to the conduit. The check valve prevents the oil in the conduit from flowing back into the reversing valve, so that the depth-limiting wheel remains stable after extending downward by a set length, improving the stability of the contact between the depth-limiting wheel and the trench digging surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural diagram of the trench digging depth adjustment device of the trench digger proposed by the present utility model Figure 1 ;

[0013] Figure 2 is a schematic structural diagram of the trench digging depth adjustment device of the trench digger proposed by the present utility model Figure 2 ;

[0014] Figure 3 is a schematic cross-sectional structural diagram of the trench digging depth adjustment device of the trench digger proposed by the present utility model.

[0015] In the figure: 1, fixing frame; 2, connecting plate; 3, hydraulic cylinder; 4, depth-limiting wheel; 5, reversing valve; 6, conduit; 7, check valve; 8, oil pump; 9, fuel tank; 10, scraping mechanism; 11, retaining pipe; 12, baffle; 101, mounting block; 102, electric telescopic rod; 103, scraper. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0017] Embodiment 1: Refer to Figures 1-3, Ditcher ditching depth adjustment device, including a fixed frame 1, the upper end of the fixed frame 1 is fixedly connected with a connecting plate 2, the bottom end of the fixed frame 1 is fixedly connected with a hydraulic cylinder 3, a travel sensor is connected to the hydraulic cylinder 3, the telescopic end of the hydraulic cylinder 3 is fixedly connected with a depth-limiting wheel 4, the hydraulic cylinder 3 is communicated with a reversing valve 5 through a first connecting pipe, the reversing valve 5 is communicated to the hydraulic cylinder 3 through a conduit 6, a check valve 7 is communicated on the conduit 6, an oil pump 8 is fixedly connected to the fixed frame 1, a fuel tank 9 is fixedly connected to the fixed frame 1, the inlet end of the oil pump 8 is communicated with the fuel tank 9 through a second connecting pipe, and the outlet of the oil pump 8 is communicated with the reversing valve 5 through a third connecting pipe, and the reversing valve 5 is communicated with the fuel tank 9 through a fourth connecting pipe.

[0018] Working process:

[0019] The fixed frame 1 is connected to the ditcher through the connecting plate 2, and the fixed frame 1 moves synchronously with the ditching knife on the ditcher. When adjusting the ditching depth, after the oil pump 8 is started, the oil in the fuel tank 9 is pumped out through the second connecting pipe, and the pumped oil is introduced into the reversing valve 5 through the third connecting pipe. The oil in the reversing valve 5 is introduced into the hydraulic cylinder 3 through the conduit 6. The telescopic end on the hydraulic cylinder 3 drives the depth-limiting wheel 4 to extend downward. The travel sensor measures the extending distance of the depth-limiting wheel 4. The check valve 7 is communicated on the conduit 6. The check valve 7 prevents the oil in the conduit 6 from flowing back into the reversing valve 5, so that the depth-limiting wheel 4 remains stable after extending a set length downward, improving the stability of the contact between the depth-limiting wheel 4 and the ditching surface. By contacting the depth-limiting wheel 4 with the ditching surface, the ditching depth of the ditching knife is controlled. When the telescopic end on the hydraulic cylinder 3 moves upward, the oil in the hydraulic cylinder 3 is introduced into the reversing valve 5 through the first connecting pipe, and the oil in the reversing valve 5 is introduced into the fuel tank 9 through the fourth connecting pipe.

[0020] Example 2: Refer to Figure 3 , as another preferred embodiment of the present invention, the difference from Embodiment 1 is that a scraping mechanism 10 for cleaning the bottom end of the depth-limiting wheel 4 is connected to the bottom end of the fixed frame 1. The scraping mechanism 10 includes a mounting block 101, the mounting block 101 is fixedly connected to the bottom end of the fixed frame 1, an electric telescopic rod 102 is fixedly connected to the mounting block 101, a scraping plate 103 is fixedly connected to the telescopic end of the electric telescopic rod 102, the upper end of the scraping plate 103 can be in contact with the bottom end of the depth-limiting wheel 4, and an inclined surface is provided at the upper end of the scraping plate 103. After the depth-limiting wheel 4 moves upward and resets, after the electric telescopic rod 102 is energized and started, it drives the scraping plate 103 to extend a set distance and then reset. During the extension process of the scraping plate 103, the bottom end of the depth-limiting wheel 4 is scraped, so that the soil at the bottom of the depth-limiting wheel 4 is separated from the depth-limiting wheel 4, preventing the soil from hindering the downward movement of the depth-limiting wheel 4 and improving the accuracy of the downward movement distance of the depth-limiting wheel 4.

[0021] Example 3: Refer to Figures 1-2, as another preferred embodiment of the present utility model, the difference from Embodiment 1 is that a retaining pipe 11 is fixedly connected to the upper end of the depth-limiting wheel 4, and a baffle 12 is fixedly connected to the bottom end of the fixing frame 1. The baffle 12 is located outside the fixing frame 1. During the downward movement of the depth-limiting wheel 4, the retaining pipe 11 is driven to move, and the retaining pipe 11 limits the upper end of the depth-limiting wheel 4 to prevent soil from falling on the upper end of the depth-limiting wheel 4. The baffle 12 blocks the upper end of the retaining pipe 11 to prevent sundries from falling into the upper end of the depth-limiting wheel 4 from the upper end of the retaining pipe 11.

[0022] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A trenching depth adjustment device for a trenching machine, characterized in that: It comprises a fixing frame (1), wherein: The bottom end of the fixed frame (1) is fixedly connected to a hydraulic cylinder (3), a stroke sensor is connected to the hydraulic cylinder (3), a limited depth wheel (4) is fixedly connected to the telescopic end of the hydraulic cylinder (3), a reversing valve (5) is connected to the hydraulic cylinder (3) via a first connecting pipe, the reversing valve (5) is connected to the hydraulic cylinder (3) via a conduit (6), the conduit (6) is connected to a check valve (7), an oil pump (8) is fixedly connected to the fixed frame (1), an oil tank (9) is fixedly connected to the fixed frame (1), an inlet end of the oil pump (8) is connected to the oil tank (9) via a second connecting pipe, an outlet end of the oil pump (8) is connected to the reversing valve (5) via a third connecting pipe, and the reversing valve (5) is connected to the oil tank (9) via a fourth connecting pipe.

2. The trenching depth adjustment device for a trenching machine according to claim 1, characterized in that: The upper end of the fixing frame (1) is fixedly connected to a connecting plate (2).

3. The trenching depth adjustment device for a trenching machine according to claim 1, characterized in that: The bottom end of the fixed frame (1) is connected to a scraper mechanism (10) for cleaning the bottom end of the depth limiting wheel (4), the scraper mechanism (10) comprising a mounting block (101), the mounting block (101) being fixedly connected to the bottom end of the fixed frame (1), the mounting block (101) being fixedly connected to an electric telescopic rod (102), the telescopic end of the electric telescopic rod (102) being fixedly connected to a scraper (103), the upper end of the scraper (103) being capable of contacting the bottom end of the depth limiting wheel (4).

4. The trenching depth adjustment device for a trenching machine according to claim 3, characterized in that: The upper end of the scraper (103) is provided with an inclined surface.

5. The trenching depth adjustment device for a trenching machine according to claim 1, characterized in that: The upper end of the depth limiting wheel (4) is fixedly connected to a stop tube (11), the bottom end of the fixing frame (1) is fixedly connected to a stop plate (12), and the stop plate (12) is located outside the fixing frame (1).

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