Device with adjustable ditching width

Abstract

The utility model discloses a ditching width adjustable device which comprises a ditching machine body, a transmission shaft is arranged on the ditching machine body, the transmission shaft is fixedly connected with a ditching cutter head, and the transmission shaft is further detachably connected with at least one ditching auxiliary cutter head through a connecting assembly. According to the utility model, the ditching auxiliary cutter head and the auxiliary connecting sleeve which are split are arranged, so that the ditching auxiliary cutter head can be increased / decreased on the premise that the transmission shaft is not disassembled when the ditching width is adjusted, and the adjusting process is simple and quick.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, and in particular to a device with adjustable trench width. Background Technology

[0002] The width of the trench excavated by an agricultural trencher depends on the width of the cutter head. The wider the cutter head, the wider the trench, and vice versa. Currently, the practice for excavating trenches of different widths is to directly replace the cutter head. However, this has the following drawbacks: the cutter head is an integral structure, and replacing the cutter head requires disassembling the entire drive shaft at the same time. After the cutter head is replaced, the drive shaft is then reinstalled, which makes the replacement process cumbersome and time-consuming. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a device with adjustable trench width. By setting a split trenching secondary cutter disc and a secondary connecting sleeve, the trenching width can be adjusted by increasing or decreasing the trenching secondary cutter disc without disassembling the drive shaft. The adjustment process is simple and fast.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A device with adjustable trenching width includes a trenching machine body, a drive shaft on the trenching machine body, a trenching cutter head fixedly connected to the drive shaft, and at least one secondary trenching cutter head detachably connected to the drive shaft via a connecting assembly.

[0006] Furthermore, the connecting assembly includes a main connecting sleeve, an intermediate connecting sleeve, and a secondary connecting sleeve. The main connecting sleeve is coaxially and fixedly connected to the trenching cutter head. The main connecting sleeve includes two symmetrical main half-sleeves, which are connected by a first bolt.

[0007] The trenching secondary cutter head includes two symmetrical semi-circular half-cutter heads;

[0008] The auxiliary connecting sleeve includes two symmetrical auxiliary half sleeves, which are connected by a second bolt. The two auxiliary half sleeves are coaxially and fixedly connected to the two half cutter discs respectively.

[0009] The intermediate connecting sleeve includes two symmetrical intermediate half sleeves, which are respectively fixedly connected to two auxiliary half sleeves. The intermediate half sleeves are provided with arc-shaped connecting plates, and the connecting plates are provided with connecting holes coaxial with the first bolt. The auxiliary half sleeves are connected to the main connecting sleeve through the connecting plates and the second bolt.

[0010] Furthermore, the main half-set has a main drive tooth on one side near the secondary half-set, the middle half-set has an intermediate drive tooth, and the secondary half-set has a secondary drive tooth on one side near the main half-set. The main drive tooth, the intermediate drive tooth, and the secondary drive tooth are arranged sequentially along the circumference to form a transmission sleeve.

[0011] Furthermore, the intermediate half-set and the connecting plate are made of stainless steel.

[0012] Furthermore, the intermediate half-set is integrally formed with the connecting plate.

[0013] Furthermore, the secondary half-sleeve is welded and fixed to the intermediate half-sleeve.

[0014] Furthermore, the head of the first bolt is provided with a hexagonal countersunk hole.

[0015] The beneficial effects of this utility model are:

[0016] This invention features a split-type grooving secondary cutter head and secondary connecting sleeve. When adjusting the grooving width, the grooving secondary cutter head can be increased or decreased without disassembling the drive shaft. The adjustment process is simple and quick. Attached Figure Description

[0017] Figure 1 This is a front view of the device with adjustable trench width in an embodiment of this utility model;

[0018] Figure 2 A side view of the device with adjustable trench width;

[0019] Figure 3 A three-dimensional view of the trenching cutter head and the trenching auxiliary cutter head when connected;

[0020] Figure 4 A 3D view of the connecting components;

[0021] Figure 5 An exploded view of the connected components;

[0022] Figure 6 This is the front view of the connecting component;

[0023] Figure 7 for Figure 6 Sectional view along line AA;

[0024] In the diagram, 1. Trencher body; 2. Trenching cutter head; 3. Trenching secondary cutter head; 4. Main connecting sleeve; 5. Secondary connecting sleeve; 6. Intermediate connecting sleeve; 7. First bolt; 8. Second bolt; 9. Half cutter head; 10. Main half sleeve; 11. Secondary half sleeve; 12. Connecting plate; 13. Connecting hole; 14. Main drive gear; 15. Secondary drive gear; 16. Intermediate drive gear; 17. Intermediate half sleeve. Detailed Implementation

[0025] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] See Figures 1-7 This utility model provides a technical solution:

[0027] Example:

[0028] like Figures 1-7 As shown, a device with adjustable trenching width includes a trenching machine body 1. The trenching machine body 1 is provided with a drive shaft. A trenching cutter disc 2 is fixedly connected to the drive shaft. Two secondary trenching cutter discs 3 are detachably connected to the drive shaft through a connecting assembly. The two secondary trenching cutter discs 3 are symmetrically arranged on both sides of the trenching cutter disc 2. The secondary trenching cutter disc 3 includes two symmetrical semi-circular half-cutter discs 9.

[0029] The connecting assembly includes a main connecting sleeve 4, an intermediate connecting sleeve 6, and a secondary connecting sleeve 5. The main connecting sleeve 4 is coaxially and fixedly connected to the trenching cutter head 2 (which may be, but is not limited to, welding). The main connecting sleeve 4 includes two symmetrical main half sleeves 10, and the two main half sleeves 10 are connected by a first bolt 7. The head of the first bolt 7 is provided with a hexagonal countersunk hole.

[0030] like Figure 5 As shown, the secondary connecting sleeve 5 includes two symmetrical secondary half sleeves 11, which are connected by a second bolt 8, and are coaxially fixedly connected to the two half cutter discs 9 respectively.

[0031] The intermediate connecting sleeve 6 includes two symmetrical intermediate half-sleeves 17 made of stainless steel. The two intermediate half-sleeves 17 are welded and fixed to two auxiliary half-sleeves 11 respectively. Each intermediate half-sleeve 17 has an arc-shaped connecting plate 12 made of stainless steel. The connecting plate 12 has a connecting hole 13 coaxial with the first bolt 7. The auxiliary half-sleeves 11 are connected to the main connecting sleeve 4 through the connecting plate 12 and the second bolt 8. The main half-sleeve 10 has a vertical connecting groove on its end face (bottom face) near the auxiliary half-sleeves 11. The upper connecting groove is adapted to the connecting plate 12 and communicates with the through hole on the main half-sleeve 10 for installing the first bolt 7.

[0032] The main half-sleeve 10 is provided with a main drive tooth 14 on one side near the secondary half-sleeve 11, the middle half-sleeve 17 is provided with a middle drive tooth 16, and the secondary half-sleeve 11 is provided with a secondary drive tooth 15 on one side near the main half-sleeve 10. The main drive tooth 14, the middle drive tooth 16 and the secondary drive tooth 15 are arranged in sequence along the circumference to form a drive sleeve.

[0033] In normal use, only the grooving cutter head 2 needs to be installed on the drive shaft, at which time the grooving width is fixed. When it is necessary to increase the grooving width, in this embodiment the width is adjusted to three times the original: remove the first bolt 7 connecting the two main body sleeves, then insert the connecting plate 12 (the middle half sleeve 17, the secondary half sleeve 11 as a whole, and the half cutter head 9) into the connecting groove, and make the connecting hole 13 coaxial with the through hole. Then, pass the first bolt 7 through the connecting hole 13 and reset it. At this time, the connection between the main half sleeve 10 and the middle half sleeve 17 and the secondary half sleeve 11 as a whole is completed.

[0034] After the two main half-sleeves 10 are connected to the two intermediate half-sleeves 17 and the auxiliary half-sleeves 11 respectively, the two auxiliary half-sleeves 11 are fixed by the second bolt 8, thus completing the installation of the trenching auxiliary cutter head 3. During transmission, the transmission is also carried out through the main, auxiliary, and intermediate transmission gears 16, which avoids the problem of slippage that easily occurs when relying solely on the friction between the auxiliary connecting sleeve 5 and the transmission shaft.

[0035] This invention features a split-type grooving secondary cutter head and secondary connecting sleeve. When adjusting the grooving width, the grooving secondary cutter head can be increased or decreased without disassembling the drive shaft. The adjustment process is simple and quick.

[0036] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A device for adjusting the trenching width, comprising a trenching machine body, wherein a drive shaft is provided on the trenching machine body, and a trenching cutter disc is fixedly connected to the drive shaft, characterized in that: At least one grooving secondary cutter head is detachably connected to the drive shaft via a connecting assembly.

2. The device with adjustable trench width according to claim 1, characterized in that: The connecting assembly includes a main connecting sleeve, an intermediate connecting sleeve, and a secondary connecting sleeve. The main connecting sleeve is coaxially and fixedly connected to the trenching cutter head. The main connecting sleeve includes two symmetrical main half sleeves, which are connected by a first bolt. The trenching secondary cutter head includes two symmetrical semi-circular half-cutter heads; The auxiliary connecting sleeve includes two symmetrical auxiliary half sleeves, which are connected by a second bolt. The two auxiliary half sleeves are coaxially and fixedly connected to the two half cutter discs respectively. The intermediate connecting sleeve includes two symmetrical intermediate half sleeves, which are respectively fixedly connected to two auxiliary half sleeves. The intermediate half sleeves are provided with arc-shaped connecting plates, and the connecting plates are provided with connecting holes coaxial with the first bolt. The auxiliary half sleeves are connected to the main connecting sleeve through the connecting plates and the second bolt.

3. The device with adjustable trench width according to claim 2, characterized in that: The main half-set has a main drive tooth on one side near the secondary half-set, the middle half-set has an intermediate drive tooth, and the secondary half-set has a secondary drive tooth on one side near the main half-set. The main drive tooth, the intermediate drive tooth, and the secondary drive tooth are arranged sequentially along the circumference to form a drive sleeve.

4. The device with adjustable trench width according to claim 2, characterized in that: The intermediate half-set and the connecting plate are made of stainless steel.

5. The device with adjustable trench width according to claim 4, characterized in that: The middle half-set is integrally formed with the connecting plate.

6. The device with adjustable trench width according to claim 2, characterized in that: The secondary half-sleeve is welded and fixed to the middle half-sleeve.

7. The device with adjustable trench width according to claim 2, characterized in that: The head of the first bolt has a hexagonal countersunk hole.

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