Compression roller structure for ditching soil preparation machine

Abstract

The compression roller structure comprises a connecting frame, side plates are fixedly installed at the two ends of the bottom of the connecting frame, a plurality of inner compression columns are arranged between the two side plates, inner columns are fixedly installed at the two ends of each inner compression column, and top plates are fixedly installed at the other ends of the two inner columns; according to the scheme, on a specific compression roller structure, the outer side of the top plate is fixedly connected with the inner side wall of the side plate, and outer compression columns are arranged on the two sides of the inner compression column in a sleeving mode. When the length of a tool bit needs to be adjusted according to the specific overall condition, an inner gear ring in an outer pressing column can be driven to rotate under the action of an outer rotating shaft, and the tool bit in the outer pressing column can slide outwards to the required distance, so that the furrow plough can be used for furrow opening operation in the soil preparation process, and the furrow plough can be used for furrow opening operation in the soil preparation process. And therefore, the application range of the whole compression roller structure is widened.

Description

Technical Field

[0001] The invention relates to the technical field of trenching and land leveling machines, and in particular to a pressure roller structure for trenching and land leveling machines. Background Art

[0002] The trenching and land preparation machine is a device used for land preparation on large farmland. The roller structure is used to press the land at the end of the land preparation harrow group. However, the traditional roller structure has the following defects:

[0003] In the use of the traditional soil leveling machine roller structure, the retracted length of the soil leveling cutter head cannot be adjusted according to the specific situation required, and an additional furrowing plow needs to be installed before the furrowing operation can be carried out. It is impossible to use the furrowing plow as required and switch the length of the cutter head required during the soil leveling process more quickly and conveniently, thereby reducing the convenience of using the overall roller structure. Summary of the invention

[0004] The purpose of the present invention is to provide a roller structure for a furrowing and land leveling machine to solve the problem proposed in the above-mentioned background technology that the furrowing plow cannot be used more quickly and conveniently as required and the length of the cutter head required during the land leveling process cannot be switched, thereby reducing the convenience of using the overall roller structure.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a pressure roller structure for a furrowing and land leveling machine, comprising a connecting frame, side plates are fixedly installed at two ends of the bottom of the connecting frame, a plurality of internal pressure columns are arranged between the two side plates, and inner columns are fixedly installed at both ends of the plurality of internal pressure columns, wherein the other ends of the two inner columns are fixedly installed with a top plate, the outer side of the top plate is fixedly connected to the inner side wall of the side plate, outer pressure columns are sleeved on both sides of the inner pressure column, the inner side wall of the outer pressure column is rotatably connected with an outer ring, the outer side of the outer ring is slidably connected to the outer side of the inner column, the inner side wall of the inner pressure column is slidably connected with a furrowing plow, the inner side wall of the outer pressure column is rotatably connected with an inner gear ring, a plurality of cutter heads are rotatably connected on one side of the inner gear ring, a plurality of inner side walls of the plurality of cutter heads are provided with limiting grooves, a plurality of limiting columns are fixedly installed on the inner side wall of the outer pressure column, and the outer sides of the plurality of limiting columns are slidably connected to the inner side wall of the limiting groove.

[0006] In order to facilitate the adjustment of the leakage length of the cutter head, as a preferred embodiment of the present invention, the inner side wall of the top plate is slidably connected with a displacement seat, the outer side of the displacement seat is fixedly installed with a first electric telescopic rod, the fixed end of the first electric telescopic rod is fixedly connected to the inner side wall of the top plate, the inner side wall of the displacement seat is fixedly installed with an adjusting motor, and the output end of the adjusting motor is fixedly installed with an outer rotating shaft.

[0007] In order to facilitate the adjustment of the leakage length of the cutter head at any position, as a preferred embodiment of the present invention, the inner wall of the outer ring is slidably connected with an external gear, the inner wall of the external gear is slidably connected with the outer side of the outer rotating shaft, the inner wall of the external pressure column is rotatably connected with a driving gear, and the driving gear is meshed with the inner gear ring.

[0008] In order to make it easier to adjust the leakage length of the cutter head and then fix it, as a preferred embodiment of the present invention, the inner wall of the external pressure column is slidably connected with a fixed tooth, the outer side of the fixed tooth is movably connected with the outer side of the driving gear, and the bottom end of the fixed tooth is fixedly installed with a second electric telescopic rod, and the fixed end of the second electric telescopic rod is fixedly connected to the inner wall of the external pressure column.

[0009] In order to enable the furrowing plow to move outward to perform furrowing operations, as a preferred embodiment of the present invention, the inner side wall of the top plate is rotatably connected to an inner rotating shaft, the outer sides of the inner rotating shaft are respectively rotatably connected to the inner side walls of the inner column and the inner pressure column, a plurality of internal gears are fixedly installed on the outer side of the inner rotating shaft, an internal rack is fixedly installed on the outer side of the top end of the furrowing plow, the internal gear is meshed with the internal rack, a main motor is fixedly installed on the inner side wall of the top plate, and the output end of the main motor is fixedly connected to one end of the inner rotating shaft.

[0010] In order to make it easier for the two relative external pressure columns to approach or move away from the internal pressure columns, as a preferred embodiment of the present invention, the inner wall of the top plate is also rotatably connected to two bidirectional screws, the outer sides of the two bidirectional screws are threadedly connected to the inner wall of the outer ring, both ends of the bidirectional screws are fixedly installed with pulleys, the outer side of the pulleys is provided with a transmission belt, the inner wall of the top plate is fixedly installed with a driving motor, and the output end of the driving motor is fixedly connected to one end of the bidirectional screw.

[0011] In order to enable multiple external pressure columns to be connected, as a preferred embodiment of the present invention, the outer sides of the external pressure columns are respectively fixedly installed with a first connecting rod and a second connecting rod, the outer side of the first connecting rod is slidably connected to the inner wall of one end of the second connecting rod, and the outer side of the external pressure column is slidably connected to a third connecting rod, wherein the outer sides of two of the external pressure columns are fixedly installed with a first connecting ring, and one end of the first connecting ring is slidably connected to the second connecting ring.

[0012] In order to enable the internal driving gear of the external pressure column to rotate to a position corresponding to the external gear, as a preferred embodiment of the present invention, an auxiliary motor is fixedly installed on the inner wall of the side panel, and a first rotating rod is fixedly installed on the output end of the auxiliary motor, and a third electric telescopic rod is fixedly installed on the telescopic end of the first rotating rod, and a linkage gear is fixedly installed on the telescopic end of the third electric telescopic rod, and the inner wall of the side panel is rotatably connected with a linkage gear ring, and the linkage gear ring is meshed with the linkage gear, and the other end of the linkage gear ring is fixedly connected to one end of the second connecting ring.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1) The bidirectional screw can be set to drive the outer ring while making the outer pressure columns on both sides of the inner pressure column slide outward. At this time, the furrowing plow inside the inner pressure column can be moved outward to perform furrowing operations during the land preparation process. When the length of the cutter head needs to be adjusted according to the specific overall situation, the outer rotating shaft can be used to drive the inner gear ring inside the outer pressure column to rotate, so that the cutter head inside can slide outward to the required distance, thereby improving the application range of the overall pressure roller structure;

[0015] 2) Through the first connecting rod, the second connecting rod and the third connecting rod, multiple external pressure columns can be linked and can play an auxiliary role in the furrowing process of the furrowing plow. Through the first connecting ring and the second connecting ring, the external pressure column can be driven to adjust the meshing state between its internal driving gear and the external gear when necessary, which is more convenient for driving the internal gear ring of the external pressure column, thereby improving the convenience of operation of the overall pressure roller structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the internal structure of the side panel of the present invention;

[0018] Figure 3 This is a schematic diagram of the outer ring structure of the present invention;

[0019] Figure 4 It is a schematic diagram of the structure of the internal pressure column of the present invention;

[0020] Figure 5 This is a schematic diagram of the internal structure of the top plate of the present invention;

[0021] Figure 6 This is a schematic diagram of the crushing mechanism structure of the present invention;

[0022] Figure 7 This is a schematic diagram of the internal structure of the external pressure column of the present invention;

[0023] Figure 8 It is a schematic diagram of the furrowing plow structure of the present invention.

[0024] In the figure: 1, connecting frame; 2, side plate; 21, auxiliary motor; 22, first rotating rod; 23, third electric telescopic rod; 24, linkage gear; 25, linkage gear ring; 3, inner pressure column; 31, furrowing plow; 32, inner rack; 4, inner column; 5, top plate; 51, displacement seat; 511, first electric telescopic rod; 512, adjustment motor; 513, outer rotating shaft; 52, inner rotating shaft; 521, inner gear; 522, main motor; 53, two-way Screw rod; 531, pulley; 532, transmission belt; 533, driving motor; 6, external pressure column; 61, internal gear ring; 611, cutter head; 612, limiting groove; 613, limiting column; 62, driving gear; 621, fixed gear; 622, second electric telescopic rod; 63, first connecting rod; 631, second connecting rod; 632, third connecting rod; 64, first connecting ring; 65, second connecting ring; 7, outer ring; 71, external gear. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-8 , the present invention provides a technical solution:

[0027] A roller structure for a furrowing and land leveling machine comprises a connecting frame 1, side plates 2 are fixedly installed at both ends of the bottom of the connecting frame 1, a plurality of internal pressure columns 3 are arranged between the two side plates 2, inner columns 4 are fixedly installed at both ends of the plurality of internal pressure columns 3, wherein top plates 5 are fixedly installed at the other ends of the two inner columns 4, the outer sides of the top plates 5 are fixedly connected to the inner side walls of the side plates 2, outer pressure columns 6 are sleeved on both sides of the internal pressure columns 3, the inner side walls of the outer pressure columns 6 are rotatably connected to outer rings 7, the outer sides of the outer rings 7 are slidably connected to the outer sides of the inner columns 4, the inner side walls of the internal pressure columns 3 are slidably connected to a furrowing plow 31, the inner side walls of the external pressure columns 6 are rotatably connected to an inner gear ring 61, a plurality of cutter heads 611 are rotatably connected to one side of the inner gear ring 61, the inner side walls of the plurality of cutter heads 611 are provided with limiting grooves 612, a plurality of limiting columns 613 are fixedly installed on the inner side walls of the external pressure columns 6, the outer sides of the plurality of limiting columns 613 are slidably connected to the inner side walls of the limiting grooves 612.

[0028] In specific use, when using the roller structure, the inner column 4 and the inner pressure column 3 are fixed to the side plate 2 and do not rotate, and the outer pressure column 6 on the outside thereof rotates on the outside of the outer ring 7 during the land preparation process. When trenching is required, the outer rings 7 on both sides of the inner pressure column 3 can slide relatively outward on the inner column 4, so that the outer pressure column 6 can be driven to slide outward through the outer ring 7, and the inner pressure column 3 between the two outer pressure columns 6 can be leaked. At this time, the trenching plow 31 can slide outward inside the inner pressure column 3, so that the trenching plow 31 can move when the connecting frame 1 is moved. During the process, a groove is opened. When the two external pressure columns 6 are fitted together or moved away from each other and the cutter head 611 on the external pressure column 6 needs to be adjusted in length, the inner tooth ring 61 inside the external pressure column 6 can be rotated inside the external pressure column 6 according to the required specific situation. The rotation of the inner tooth ring 61 can drive the cutter head 611 to slide outward inside the external pressure column 6, and the limiting groove 612 on the cutter head 611 slides with the outer side of the limiting column 613, which limits the cutter head 611, thereby improving the application range and operation convenience of the overall pressure roller structure.

[0029] In this embodiment: the inner wall of the top plate 5 is slidably connected with a displacement seat 51, the outer side of the displacement seat 51 is fixedly installed with a first electric telescopic rod 511, the fixed end of the first electric telescopic rod 511 is fixedly connected to the inner wall of the top plate 5, the inner wall of the displacement seat 51 is fixedly installed with an adjusting motor 512, and the output end of the adjusting motor 512 is fixedly installed with an outer rotating shaft 513.

[0030] During specific use, when the length of the cutter head 611 needs to be adjusted, the first electric telescopic rod 511 can be used to drive the displacement seat 51 to slide inside the top plate 5, so that the displacement seat 51 can drive the outer rotating shaft 513 to slide, and the outer rotating shaft 513 can slide inside the outer ring 7 and the inner pressure column 3 respectively, and by starting the adjustment motor 512 inside the displacement seat 51, the adjustment motor 512 can drive the outer rotating shaft 513 to rotate, and the outer rotating shaft 513 can also rotate inside the outer ring 7 and the inner pressure column 3.

[0031] In this embodiment: the inner wall of the outer ring 7 is slidably connected with an outer gear 71, the inner wall of the outer gear 71 is slidably connected with the outer side of the outer shaft 513, the inner wall of the outer pressure column 6 is rotatably connected with a driving gear 62, and the driving gear 62 is meshed with the inner gear ring 61.

[0032] During specific use, when it is necessary to adjust the length of the cutter head 611, the outer pressure column 6 is rotated until the driving gear 62 is facing the position corresponding to the outer gear 71, and the outer rotating shaft 513 can drive the outer gear 71 inside the outer ring 7 to slide to the position corresponding to the driving gear 62, and the driving gear 62 is meshed with the outer gear 71. At this time, the outer rotating shaft 513 can drive the outer gear 71 to rotate while driving the driving gear 62 inside the outer pressure column 6 to rotate, so that the driving gear 62 can drive the inner gear ring 61 inside the outer pressure column 6 to rotate, which is more convenient for adjusting the leakage length of the cutter head 611, and because the outer gear 71 can slide on the outside of the outer rotating shaft 513, the outer rotating shaft 513 can drive the outer gear 71 inside the outer ring 7 at any position to rotate, so that the leakage length of the cutter head 611 can be adjusted when the outer pressure columns 6 are in close contact or away from each other.

[0033] In this embodiment: the inner wall of the external pressure column 6 is slidably connected with a fixed tooth 621, the outer side of the fixed tooth 621 is movably connected with the outer side of the driving gear 62, and the bottom end of the fixed tooth 621 is fixedly installed with a second electric telescopic rod 622, and the fixed end of the second electric telescopic rod 622 is fixedly connected to the inner wall of the external pressure column 6.

[0034] During specific use, the driving gear 62 inside the external pressure column 6 drives the inner gear ring 61 to rotate. When the leakage length of the cutter head 611 is adjusted to an appropriate length, the second electric telescopic rod 622 can drive the engagement between the fixed tooth 621 and the driving gear 62, so that the driving gear 62 is fixed inside the external pressure column 6, and the inner gear ring 61 can be fixed by the driving gear 62, thereby achieving the fixation of the leakage length of the cutter head 611.

[0035] In this embodiment: the inner side wall of the top plate 5 is rotatably connected with an inner rotating shaft 52, the outer sides of the inner rotating shaft 52 are rotatably connected with the inner side walls of the inner column 4 and the inner pressure column 3 respectively, a plurality of inner gears 521 are fixedly installed on the outer side of the inner rotating shaft 52, an inner rack 32 is fixedly installed on the outer side of the top end of the furrowing plow 31, the inner gear 521 is meshed with the inner rack 32, a main motor 522 is fixedly installed on the inner side wall of the top plate 5, and the output end of the main motor 522 is fixedly connected to one end of the inner rotating shaft 52.

[0036] During specific use, when the outer pressure columns 6 on both sides of the inner pressure column 3 slide outward and the furrowing plow 31 needs to be moved outward for furrowing operation, the main motor 522 inside the top plate 5 can be started, so that the main motor 522 drives the inner rotating shaft 52 to rotate, and the inner rotating shaft 52 can drive the inner gear 521 inside the inner pressure column 3 to rotate, and the inner gear 521 acts on the inner rack 32 on the furrowing plow 31 to make the furrowing plow 31 slide to the outside of the inner pressure column 3. During the overall movement of the pressure roller, the furrowing operation can be performed through the synchronous movement of the furrowing plow 31.

[0037] In this embodiment: the inner side wall of the top plate 5 is also rotatably connected with two bidirectional screws 53, the outer sides of the two bidirectional screws 53 are threadedly connected to the inner side wall of the outer ring 7, both ends of the bidirectional screws 53 are fixedly installed with pulleys 531, the outer side of the pulley 531 is sleeved with a transmission belt 532, and the inner side wall of the top plate 5 is fixedly installed with a driving motor 533, and the output end of the driving motor 533 is fixedly connected to one end of the bidirectional screw 53.

[0038] During specific use, when the furrowing plow 31 is needed or not, the two external pressure columns 6 can be moved away from or close to each other, so that the internal pressure column 3 can leak out to between the two external pressure columns 6 or be wrapped inside for protection, and the internal drive motor 533 of the top plate 5 can be started, and the two bidirectional screws 53 can be linked by the pulley 531 and the transmission belt 532, so that the two bidirectional screws 53 can rotate at the same time. When the bidirectional screw 53 rotates, since the threads on the bidirectional screws 53 relative to the two external pressure columns 6 are opposite, when the bidirectional screw 53 rotates, the outer rings 7 at the two external pressure columns 6 can drive the external pressure columns 6 to move relatively away or closer, and then the internal pressure column 3 can be protected from leaking out or being retracted inward.

[0039] In this embodiment: the outer side of the external pressure column 6 is respectively fixedly installed with a first connecting rod 63 and a second connecting rod 631, the outer side of the first connecting rod 63 is slidably connected to the inner wall of one end of the second connecting rod 631, and the outer side of the external pressure column 6 is slidably connected to the third connecting rod 632, wherein the outer sides of the two external pressure columns 6 are fixedly installed with a first connecting ring 64, and one end of the first connecting ring 64 is slidably connected to the second connecting ring 65.

[0040] During specific use, when the external pressure column 6 needs to be rotated to a position where its internal driving gear 62 corresponds to the external gear 71 inside the outer ring 7, since multiple external pressure columns 6 are connected by the first connecting rod 63, the second connecting rod 631 and the third connecting rod 632, the first connecting rod 63 and the second connecting rod 631 can slide inside the second connecting rod 631 when the external pressure columns 6 are close to or away from each other. When the external pressure column 6 moves to the end, the first connecting rod 63 and the second connecting rod 631 still remain connected. Similarly, the external pressure columns 6 that move relative to each other are also connected by sliding inside the third connecting ring, so that multiple external pressure columns 6 can rotate together. In the process of land leveling and furrowing, the internal rotation of the first connecting rod 63 and the second connecting rod 631 inside the furrow of the furrowing plow 31 assists in furrowing, and the two ends of the multiple external pressure columns 6 are connected by the first connecting ring 64 and the second connecting ring 65. When the external pressure column 6 slides, the second connecting ring 65 can slide inside the first connecting ring 64, so that the multiple external pressure columns 6 can be operated and steered synchronously.

[0041] In this embodiment: the inner wall of the side panel 2 is fixedly mounted with an auxiliary motor 21, the output end of the auxiliary motor 21 is fixedly mounted with a first rotating rod 22, the telescopic end of the first rotating rod 22 is fixedly mounted with a third electric telescopic rod 23, the telescopic end of the third electric telescopic rod 23 is fixedly mounted with a linkage gear 24, the inner wall of the side panel 2 is rotatably connected with a linkage gear ring 25, the linkage gear ring 25 is meshed with the linkage gear 24, and the other end of the linkage gear ring 25 is fixedly connected to one end of the second connecting ring 65.

[0042] During specific use, when the outer pressure column 6 needs to be operated and turned to the position where its internal driving gear 62 corresponds to the outer gear 71 inside the outer ring 7, the third electric telescopic rod 23 can be used to drive the linkage gear 24 to move, so that the linkage gear 24 is meshed with the linkage gear ring 25 at this time, and the auxiliary motor 21 can be started to make the auxiliary motor 21 drive the first rotating rod 22 to rotate, and then the third electric telescopic rod 23 drives the linkage gear 24 to rotate, so that the linkage gear ring 25 can be driven to rotate through the linkage gear 24, so that the linkage gear ring 25 at this time can drive the second connecting ring 65 connected thereto to rotate, and drive the entire outer pressure column 6 to rotate, so that it rotates to the position where the internal driving gear 62 corresponds to the outer gear 71 and can mesh, and when the linkage gear 24 is not meshed with the linkage gear ring 25, the outer pressure column 6 can be rotated on the outside of the inner pressure column 3 and the outer ring 7 during the use of the pressure roller to level the ground.

[0043] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A roller structure for a trenching and land leveling machine, comprising a connecting frame (1), characterized in that: The two ends of the bottom of the connecting frame (1) are fixedly mounted with side plates (2), a plurality of internal pressure columns (3) are arranged between the two side plates (2), and the two ends of the plurality of internal pressure columns (3) are fixedly mounted with internal columns (4), wherein the other ends of two of the internal columns (4) are fixedly mounted with top plates (5), the outer side of the top plate (5) is fixedly connected to the inner side wall of the side plate (2), the two sides of the internal pressure column (3) are sleeved with external pressure columns (6), the inner side wall of the external pressure column (6) is rotatably connected with an outer ring (7), the outer side of the outer ring (7) is connected to the inner side wall of the side plate (2), and the outer side of the outer ring (7) is connected to the inner side wall of the side plate (2). The outer side of the inner column (4) is slidably connected, the inner side wall of the inner pressure column (3) is slidably connected with a furrowing plow (31), the inner side wall of the outer pressure column (6) is rotatably connected with an inner toothed ring (61), one side of the inner toothed ring (61) is rotatably connected with a plurality of cutter heads (611), the inner side walls of the plurality of cutter heads (611) are provided with limiting grooves (612), the inner side wall of the outer pressure column (6) is fixedly installed with a plurality of limiting columns (613), and the outer sides of the plurality of limiting columns (613) are slidably connected with the inner side wall of the limiting groove (612).

2. The roller structure for a trenching and land leveling machine according to claim 1, characterized in that: The inner side wall of the top plate (5) is slidably connected to a displacement seat (51), a first electric telescopic rod (511) is fixedly mounted on the outer side of the displacement seat (51), a fixed end of the first electric telescopic rod (511) is fixedly connected to the inner side wall of the top plate (5), an adjustment motor (512) is fixedly mounted on the inner side wall of the displacement seat (51), and an outer rotating shaft (513) is fixedly mounted on the output end of the adjustment motor (512).

3. The roller structure for a trenching and land leveling machine according to claim 2, characterized in that: The inner side wall of the outer ring (7) is slidably connected to an outer gear (71), the inner side wall of the outer gear (71) is slidably connected to the outer side of the outer shaft (513), the inner side wall of the outer pressure column (6) is rotatably connected to a driving gear (62), and the driving gear (62) is meshed with the inner gear ring (61).

4. The roller structure for a trenching and land leveling machine according to claim 3, characterized in that: The inner wall of the external pressure column (6) is slidably connected with a fixed tooth (621), the outer side of the fixed tooth (621) is movably connected with the outer side of the driving gear (62), and the bottom end of the fixed tooth (621) is fixedly installed with a second electric telescopic rod (622), and the fixed end of the second electric telescopic rod (622) is fixedly connected with the inner wall of the external pressure column (6).

5. The roller structure for a trenching and land leveling machine according to claim 1, characterized in that: The inner side wall of the top plate (5) is rotatably connected to an inner rotating shaft (52), and the outer sides of the inner rotating shaft (52) are rotatably connected to the inner side walls of the inner column (4) and the inner pressure column (3), respectively. A plurality of inner gears (521) are fixedly mounted on the outer side of the inner rotating shaft (52), and an inner rack (32) is fixedly mounted on the outer side of the top end of the furrowing plow (31), and the inner gear (521) is meshed with the inner rack (32). A main motor (522) is fixedly mounted on the inner side wall of the top plate (5), and the output end of the main motor (522) is fixedly connected to one end of the inner rotating shaft (52).

6. The roller structure for a trenching and land leveling machine according to claim 1, characterized in that: The inner side wall of the top plate (5) is also rotatably connected to two bidirectional screws (53), the outer sides of the two bidirectional screws (53) are threadedly connected to the inner side wall of the outer ring (7), pulleys (531) are fixedly installed at both ends of the bidirectional screws (53), and a transmission belt (532) is sleeved on the outer side of the pulley (531), and a driving motor (533) is fixedly installed on the inner side wall of the top plate (5), and the output end of the driving motor (533) is fixedly connected to one end of the bidirectional screw (53).

7. The roller structure for a trenching and land leveling machine according to claim 1, characterized in that: The outer sides of the external pressure column (6) are respectively fixedly mounted with a first connecting rod (63) and a second connecting rod (631); the outer side of the first connecting rod (63) is slidably connected to the inner wall of one end of the second connecting rod (631); the outer side of the external pressure column (6) is slidably connected to a third connecting rod (632); the outer sides of the two external pressure columns (6) are fixedly mounted with a first connecting ring (64); one end of the first connecting ring (64) is slidably connected to a second connecting ring (65).

8. The roller structure for a trenching and land leveling machine according to claim 7, characterized in that: An auxiliary motor (21) is fixedly mounted on the inner wall of the side plate (2); a first rotating rod (22) is fixedly mounted on the output end of the auxiliary motor (21); a third electric telescopic rod (23) is fixedly mounted on the telescopic end of the first rotating rod (22); a linkage gear (24) is fixedly mounted on the telescopic end of the third electric telescopic rod (23); a linkage gear ring (25) is rotatably connected to the inner wall of the side plate (2); the linkage gear ring (25) is meshed with the linkage gear (24); and the other end of the linkage gear ring (25) is fixedly connected to one end of a second connecting ring (65).

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