Ditching device with adjustable ditching depth and width

By designing a trenching device with adjustable depth and width, the problem of the inability to adjust the trenching width in existing technologies has been solved, thus improving the adaptability and efficiency of the trenching machine.

CN223859696UActive Publication Date: 2026-02-03WUHAN MUNICIPAL CONSTR GROUP
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Patent Information

Application Number
CN202422733547.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-08
Publication Date
2026-02-03
Estimated Expiration
2034-11-08

AI Technical Summary

Technical Problem

Existing trenching machines can only adjust the trenching depth, not the trenching width, and cannot meet the growth needs of different plants.

Method used

A trenching device was designed, comprising a fixed base, a rotating drum, an adjustment box, and a soil-turning blade. The rotating drum is driven by a motor, and combined with horizontal and radial adjustment components, the trenching depth and width can be adjusted. A bulldozing mechanism is also provided to prevent soil accumulation.

Benefits of technology

It enables flexible adjustment of trench depth and width to meet the planting needs of different plants, thereby improving plant survival rate and trenching efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a ditching device with adjustable ditching depth and width, which comprises a fixed seat, and the fixed seat is mounted on an external moving carrier in a detachable connection manner; the rotating drum is rotationally connected to the fixed seat through a rotating shaft, and the rotating drum is horizontally arranged and is perpendicular to the moving direction of the carrier; a first motor is arranged on the fixed seat and is used for driving the rotating drum to rotate; the two adjusting boxes are arranged in the rotary drum in a sliding mode, and the horizontal adjusting assembly is arranged between the adjusting boxes and the rotary drum and used for adjusting the distance between the two adjusting boxes in the rotary drum; the multiple soil turning knives are arranged in the adjusting box through the radial adjusting assembly, and the radial adjusting assembly synchronously adjusts the extending lengths of all the soil turning knives; a radial sliding groove is formed in the adjusting box, an axial sliding groove is formed in the rotary drum, and the soil turning cutters are arranged on the adjusting box at intervals in the circumferential direction, are arranged in the radial direction of the adjusting box, sequentially penetrate through the radial sliding groove and the axial sliding groove and extend to the outer side of the rotary drum. The ditching depth can be adjusted, meanwhile, the distance between two adjacent groups of ditches can be adjusted, and the ditching requirements of plants with different planting distances are met.
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Description

Technical Field

[0001] This utility model relates to the field of greening construction technology, specifically to a trenching device with adjustable trenching depth and width. Background Technology

[0002] In landscaping projects, trenching machines are often used to excavate trenches to facilitate subsequent landscaping work. Existing technology discloses a trenching machine with adjustable trenching depth. This machine works by starting a first motor, which drives a threaded rod to rotate. The threaded block then moves a slider downwards, which in turn moves a connecting plate downwards. The connecting plate then moves a connecting rod downwards, thus adjusting the trenching depth and improving the machine's versatility. A second motor drives a rotating rod to rotate, which in turn drives a transmission wheel. The transmission wheel, via a transmission belt, drives a driven wheel, which in turn drives the connecting rod. The connecting rod then drives the trenching disc to rotate, performing the trenching operation.

[0003] However, the above-mentioned publicly available solutions have the following shortcomings: the trenching tray can only adjust the depth when trenching, and cannot adjust the trench width to meet the different growth needs of different plants, which limits its practicality. Utility Model Content

[0004] To address the aforementioned deficiencies in existing technologies, a trenching device with adjustable trenching depth and width is provided. This device not only allows for adjustment of trenching depth but also enables adjustment of the spacing between adjacent trenches, thus meeting the trenching requirements for plants with different planting spacings.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] A trenching device with adjustable trenching depth and width, characterized in that: it includes...

[0007] A mounting base is detachably mounted on an external mobile vehicle.

[0008] A rotating drum is rotatably connected to a fixed base via a rotating shaft. The rotating drum is horizontally positioned and perpendicular to the direction of movement of the carrier. A first motor is installed on the fixed base to drive the rotation of the rotating drum.

[0009] The adjustment box and the horizontal adjustment component are arranged in a rotating drum. The two adjustment boxes are slidably disposed inside the rotating drum, and the horizontal adjustment component is disposed between the adjustment box and the rotating drum to adjust the distance between the two adjustment boxes inside the rotating drum.

[0010] The soil-turning blades and radial adjustment assembly are provided. Several soil-turning blades are installed in the adjustment box through the radial adjustment assembly, which synchronously adjusts the extension length of all soil-turning blades. A radial groove is provided in the adjustment box, and an axial groove is provided on the rotating drum. The soil-turning blades are arranged circumferentially on the adjustment box and radially along the adjustment box. They pass through the radial groove and the axial groove in sequence and extend to the outside of the rotating drum.

[0011] According to the above technical solution, the horizontal adjustment assembly includes a threaded rod, a guide rod, a movable seat, and a second motor; one or more guide rods and a screw rod are disposed between the rotating drum and the adjustment box, and both the guide rod and the threaded rod are parallel to the axis of the rotating drum; each guide rod or threaded rod is equipped with two movable seats, which are respectively fixed on two adjustment boxes; the movable seat corresponding to the guide rod is provided with a guide hole that matches the guide rod, and the threaded rod is a double-acting screw, with a threaded hole matching the threaded rod on the movable seat corresponding to the threaded rod; the guide rod passes through the corresponding movable seat and is fixed on the rotating drum, and the threaded rod passes through the corresponding movable seat and is rotatably connected to the rotating drum; the second motor is disposed on the rotating drum and drives the rotation of the threaded rod.

[0012] According to the above technical solution, two guide rods are used, and the two guide rods and one threaded rod are arranged at 120° intervals on the circumference.

[0013] According to the above technical solution, the radial adjustment assembly includes a third motor, a turntable, an adjustment seat, and a hinge rod. The third motor is fixedly installed inside the adjustment box, and the output shaft of the third motor is located on the rotation center line of the adjustment box. The turntable is fixedly connected to the output shaft of the third motor, and the connection point is located at the center of the turntable. The number of hinge rods and adjustment seats is the same as the number of tillage blades. One end of the hinge rod is hinged to the adjustment seat, and the other end of the hinge rod is hinged to the turntable. The adjustment seat passes through the radial slide groove and the axial slide groove in sequence and is then fixedly connected to the tillage blade.

[0014] According to the above technical solution, several sets of soil-turning blades are set on the rotating drum at equal intervals around the circumference through the adjusting seat; the dimensions of the radial and axial sliding grooves are matched with the dimensions of the adjusting seat.

[0015] According to the above technical solution, it also includes a bulldozing mechanism for pushing the soil turned up by the trenching mechanism toward both sides of the trench. The bulldozing mechanism is installed on a fixed base; in the direction of the external moving vehicle's movement, the bulldozing mechanism is located behind the regulating box.

[0016] According to the above technical solution, the bulldozing mechanism mounting bracket includes a connecting beam, a lifting mechanism, a mounting bracket, and a shovel assembly mounted on the mounting bracket; one end of the connecting beam is fixed to the mounting base, and the other end extends out of the mounting base and is located directly above the track of the tilling blade after trenching; the top end of the lifting mechanism is fixed to the other end of the connecting beam, and the bottom end of the lifting mechanism is connected to the mounting bracket; the shovel assembly is mounted on the mounting bracket as required; the lifting mechanism adopts the existing hydraulic lifting rod.

[0017] According to the above technical solution, the shovel assembly includes a soil-breaking shovel fixed on the side of the mounting bracket facing the adjustment box, a trenching shovel rotatably connected to the mounting bracket and located on both sides of the soil-breaking shovel, and a telescopic mechanism located between the trenching shovel and the mounting bracket for adjusting the angle of the trenching shovel; the soil-breaking shovel is a right-angled trapezoid; the telescopic mechanism adopts an electric push rod.

[0018] According to the above technical solution, the fixed base includes a U-shaped frame and a mounting base. The U-shaped frame includes a horizontal section and two vertical sections on both sides. The rotating drum is rotatably connected between the two vertical sections. The mounting base is fixed on the top of the horizontal section. The mounting base is provided with threaded mounting holes that match the external moving vehicle.

[0019] This utility model has the following beneficial effects:

[0020] 1. This device is mounted on a mobile device such as a tiller using a fixed base. A first motor drives the rotating drum on the fixed base, which in turn rotates all the tilling blades to turn the soil and create furrows. An axial adjustment component controls the distance between two sets of adjustment boxes, moving them closer or further apart, thus adjusting the width of the furrows. The axial adjustment component also adjusts the length of each tilling blade extending beyond the rotating drum, thereby controlling the depth of the furrow. Based on these measures, the depth and width of the furrows can be adjusted to suit different planting conditions and improve the survival rate.

[0021] 2. First, the soil is loosened and turned over by the soil-turning blade. Then, the soil-breaking shovel on the mounting bracket at the rear breaks and pushes the soil clods that were not turned over by the soil-turning blade. Then, the trenching shovels on both sides push the broken soil to the edge to avoid excess soil accumulating in the trench and improve trenching efficiency.

[0022] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it according to the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. The specific implementation methods of this utility model are given in detail in the following embodiments and their accompanying drawings. Attached Figure Description

[0023] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0024] Figure 1 This is a schematic diagram of the overall structure of an embodiment provided by this utility model;

[0025] Figure 2This is a schematic diagram of the structure of the soil-turning blade on the rotating drum according to an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the internal structure of the rotating drum provided in an embodiment of this utility model;

[0027] Figure 4 This is a structural schematic diagram of the bulldozing mechanism provided in an embodiment of the present invention (V-shaped structure with the opening facing forward);

[0028] In the diagram, 1. Fixed base; 1-1. U-shaped frame; 1-2. Mounting base; 2. Rotary drum; 3. First motor; 4. Adjustment box; 5. Horizontal adjustment assembly; 5-1. Threaded rod; 5-2. Guide rod; 5-3. Moving base; 5-4. Second motor; 6. Soil-turning blade; 7. Radial adjustment assembly; 7-1. Third motor; 7-2. Turntable; 7-3. Adjustment base; 7-4. Hinge rod; 8. Radial groove; 9. Axial groove; 10. Connecting beam; 11. Lifting mechanism; 12. Mounting bracket; 13. Shovel assembly; 13-1. Soil-breaking shovel; 13-2. Trenching shovel; 13-3. Telescopic mechanism. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-4 The principles and features of this utility model are described below. The examples given are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description and claims. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0030] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] Reference Figures 1-4 As shown, the trenching device with adjustable trenching depth and width provided by this utility model is characterized by: including

[0033] Fixed base 1, the fixed base is detachably connected to the external mobile vehicle;

[0034] Rotary drum 2 is rotatably connected to a fixed base via a rotating shaft. The rotary drum is horizontally arranged and perpendicular to the direction of movement of the carrier. A first motor 3 is installed on the fixed base to drive the rotation of the rotary drum.

[0035] Adjustment box 4 and horizontal adjustment component 5: The two adjustment boxes are slidably disposed inside the rotating drum, and the horizontal adjustment component is disposed between the adjustment boxes and the rotating drum to adjust the distance between the two adjustment boxes inside the rotating drum;

[0036] The soil-turning blades 6 and the radial adjustment assembly 7 are arranged in an adjustment box. Several soil-turning blades are arranged in an adjustment box through the radial adjustment assembly. The radial adjustment assembly adjusts the extension length of all soil-turning blades synchronously. A radial groove 8 is provided in the adjustment box, and an axial groove 9 is provided on the rotating drum. The soil-turning blades are arranged circumferentially on the adjustment box and radially along the adjustment box. They pass through the radial groove and the axial groove in sequence and extend to the outside of the rotating drum.

[0037] In this embodiment, the device is mounted on a mobile device such as a tiller using a fixed base. A first motor drives the rotating drum on the fixed base, which in turn rotates all the tilling blades to turn the soil and create furrows. An axial adjustment component controls the distance between the two sets of adjustment boxes, moving them closer or further apart, thus adjusting the width of the furrows. The axial adjustment component also adjusts the length of all the tilling blades extending beyond the rotating drum, thereby controlling the furrow depth to be shallower. Based on these measures, the depth and width of the furrows can be adjusted to suit different planting conditions and improve the survival rate.

[0038] Example 1 provides a preferred structural form of the horizontal adjustment assembly. Specifically, the horizontal adjustment assembly includes a threaded rod 5-1, a guide rod 5-2, a movable seat 5-3, and a second motor 5-4; one or more guide rods and a screw rod are disposed between the rotating drum and the adjustment box, and both the guide rod and the threaded rod are parallel to the axis of the rotating drum; each guide rod or threaded rod is equipped with two movable seats, and the two movable seats are respectively fixed on two adjustment boxes; the movable seat corresponding to the guide rod has a guide hole that matches the guide rod, and the threaded rod is a double-ended screw, and the movable seat corresponding to the threaded rod has a threaded hole that matches the threaded rod; the guide rod passes through the corresponding movable seat and is fixed on the rotating drum, and the threaded rod passes through the corresponding movable seat and is rotatably connected to the rotating drum; the second motor is disposed on the rotating drum and drives the rotation of the threaded rod.

[0039] In this embodiment, the distance between the two adjustment boxes is adjusted by driving the threaded rod to rotate forward or backward using a second motor.

[0040] Preferably, two guide rods are used, and the two guide rods and one threaded rod are arranged at 120° intervals on the circumference.

[0041] Example 1 provides a preferred structural form of the radial adjustment assembly. Specifically, the radial adjustment assembly includes a third motor 7-1, a turntable 7-2, an adjustment seat 7-3, and a hinge rod 7-4. The third motor is fixedly installed inside the adjustment box, and its output shaft is located on the rotation center line of the adjustment box. The turntable is fixedly connected to the output shaft of the third motor, with the connection point located at the center of the turntable. The number of hinge rods and adjustment seats is the same as the number of tilling blades. One end of the hinge rod is hinged to the adjustment seat, and the other end is hinged to the turntable. The adjustment seat passes through a radial groove and an axial groove in sequence and is then fixedly connected to the tilling blade. The tilling blade is detachably connected to the adjustment seat by bolts, and the adjustment seat slides within the radial and axial grooves.

[0042] In this embodiment, the rotation of the turntable driven by a third motor causes several sets of hinged rods connected to it to rotate. The other end of each hinged rod is hinged to an adjusting seat, which is slidably connected to a radial groove on the adjusting box. Consequently, the several sets of adjusting seats slide along their corresponding radial grooves, converging or dispersing towards the turntable. When the several sets of adjusting seats converge, the several sets of tilling blades converge towards the inside of the rotating cylinder, resulting in a shallower trenching depth. When the several sets of tilling blades disperse towards the outside of the rotating cylinder, the trenching depth increases. The radial grooves and adjusting seats are designed to ensure the stability of the tilling blades and improve trenching efficiency.

[0043] Preferably, several sets of soil-turning blades are evenly spaced on the rotating drum around the circumference of the adjusting seat; the dimensions of the radial and axial sliding grooves match the dimensions of the adjusting seat. Based on the placement of the soil-turning blades, several sets of hinged rods are arranged in a circular array at the edge of the turntable and are hinged to its edge.

[0044] Example 2

[0045] The structure and principle of Example 2 are similar to those of Example 1, except that: in order to avoid excess soil accumulating in the ditch and affecting plant planting, a bulldozing mechanism is also included to push the soil turned up by the ditching mechanism to both sides of the ditch. The bulldozing mechanism is installed on a fixed base; in the direction of the external moving vehicle, the bulldozing mechanism is located behind the regulating box.

[0046] In embodiment 2, the bulldozing mechanism mounting bracket includes a connecting beam 10, a lifting mechanism 11, a mounting bracket 12, and a shovel assembly 13 mounted on the mounting bracket; one end of the connecting beam is fixed to the mounting base, and the other end extends out of the mounting base and is located directly above the track of the tilling blade after trenching; the top end of the lifting mechanism is fixed to the other end of the connecting beam, and the bottom end of the lifting mechanism is connected to the mounting bracket; the shovel assembly is mounted on the mounting bracket as required; the lifting mechanism adopts an existing hydraulic lifting rod.

[0047] Preferably, the shovel assembly includes a breaking shovel 13-1 fixed to the side of the mounting bracket facing the adjustment box, trenching shovels 13-2 rotatably connected to the mounting bracket and located on both sides of the breaking shovel, and a telescopic mechanism 13-3 located between the trenching shovel and the mounting bracket for adjusting the angle of the trenching shovel; preferably, the breaking shovel is a right-angled trapezoid. The breaking shovel is used to further break and push soil clods that have not been turned over by the turning blade, improving trenching efficiency; the telescopic mechanism uses an electric push rod.

[0048] In this embodiment, the lifting mechanism drives the mounting bracket to move vertically, thereby adjusting the height of the breaking shovel on the mounting bracket and the height of the trenching shovels on both sides to accommodate trenches of different depths created by the trenching mechanism. The breaking shovel on the mounting bracket and the trenching shovels on both sides move synchronously with the fixed base. During the process, the soil is first loosened and turned over by the turning blade, and then the breaking shovel on the mounting bracket further breaks and pushes the soil clods that were not turned over by the turning blade; subsequently, the trenching shovels on both sides push the broken soil to the edge, preventing excess soil from accumulating in the trench and improving trenching efficiency.

[0049] The extension or retraction of the telescopic mechanism allows the trenching shovel to expand or retract along the mounting bracket. The two sets of shovels work together to adapt to trenches of different widths, pushing away excess soil. In the embodiment shown, the trenching shovels are arranged in a V-shape, with the soil-breaking shovel on the mounting bracket positioned at the smaller angle of the V-shape. Alternatively, the soil-breaking shovel on the mounting bracket can be positioned at the larger angle of the V-shape to reduce resistance during the movement of the mobile vehicle; that is, the V-shaped opening faces rearward, while in the embodiment shown, it faces forward.

[0050] In embodiments 1-2, a preferred structural form of the fixed seat is given. The fixed seat includes a U-shaped frame 1-1 and a mounting seat 1-2. The U-shaped frame includes a horizontal section and two vertical sections on both sides. The rotating cylinder is rotatably connected between the two vertical sections. The mounting seat is fixed on the top of the horizontal section. The mounting seat is provided with threaded mounting holes that match the external moving vehicle.

[0051] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A trenching device with adjustable trenching depth and width, characterized in that: include A mounting base is detachably mounted on an external mobile vehicle. A rotating drum is rotatably connected to a fixed base via a rotating shaft. The rotating drum is horizontally positioned and perpendicular to the direction of movement of the carrier. A first motor is installed on the fixed base to drive the rotation of the rotating drum. The adjustment box and the horizontal adjustment component are arranged in a rotating drum. The two adjustment boxes are slidably disposed inside the rotating drum, and the horizontal adjustment component is disposed between the adjustment box and the rotating drum to adjust the distance between the two adjustment boxes inside the rotating drum. The soil-turning blades and radial adjustment assembly are provided. Several soil-turning blades are installed in the adjustment box through the radial adjustment assembly, which synchronously adjusts the extension length of all soil-turning blades. A radial groove is provided in the adjustment box, and an axial groove is provided on the rotating drum. The soil-turning blades are arranged circumferentially on the adjustment box and radially along the adjustment box. They pass through the radial groove and the axial groove in sequence and extend to the outside of the rotating drum.

2. The trenching device with adjustable trenching depth and width according to claim 1, characterized in that: The horizontal adjustment assembly includes a threaded rod, a guide rod, a movable seat, and a second motor. One or more guide rods and a screw rod are positioned between the rotating drum and the adjustment box. Both the guide rod and the threaded rod are parallel to the axis of the rotating drum. Each guide rod or threaded rod is equipped with two movable seats, which are fixed to two adjustment boxes respectively. The movable seat corresponding to the guide rod has a guide hole that matches the guide rod. The threaded rod is a double-ended screw, and the movable seat corresponding to the threaded rod has a threaded hole that matches the threaded rod. The guide rod passes through the corresponding movable seat and is fixed to the rotating drum, while the threaded rod passes through the corresponding movable seat and is rotatably connected to the rotating drum. The second motor is located on the rotating drum and drives the rotation of the threaded rod.

3. The trenching device with adjustable trenching depth and width according to claim 2, characterized in that: Two guide rods are used, and the two guide rods and one threaded rod are arranged at 120° intervals on the circumference.

4. The trenching device with adjustable trenching depth and width according to claim 1, characterized in that: The radial adjustment assembly includes a third motor, a turntable, an adjustment seat, and a hinge rod. The third motor is fixedly installed inside the adjustment box, and its output shaft is located on the rotation center line of the adjustment box. The turntable is fixedly connected to the output shaft of the third motor, with the connection point located at the center of the turntable. The number of hinge rods and adjustment seats is the same as the number of tillage blades. One end of the hinge rod is hinged to the adjustment seat, and the other end of the hinge rod is hinged to the turntable. The adjustment seat passes through the radial slide and the axial slide in sequence and is then fixedly connected to the tillage blade.

5. The trenching device with adjustable trenching depth and width according to claim 4, characterized in that: Several sets of soil-turning blades are evenly spaced on the rotating drum around the circumference of the adjusting seat; the dimensions of the radial and axial sliding grooves match the dimensions of the adjusting seat.

6. The trenching device with adjustable trenching depth and width according to claim 1, characterized in that: It also includes a bulldozing mechanism for pushing the soil turned up by the trenching mechanism toward both sides of the trench. The bulldozing mechanism is mounted on a fixed base; in the direction of travel of the external moving vehicle, the bulldozing mechanism is located behind the regulating box.

7. The trenching device with adjustable trenching depth and width according to claim 1, characterized in that: The bulldozing mechanism mounting bracket includes a connecting beam, a lifting mechanism, a mounting bracket, and a shovel assembly mounted on the mounting bracket. One end of the connecting beam is fixed to the mounting base, and the other end extends out of the mounting base and is located directly above the track of the tilling blade after trenching. The top end of the lifting mechanism is fixed to the other end of the connecting beam, and the bottom end of the lifting mechanism is connected to the mounting bracket. The shovel assembly is mounted on the mounting bracket as needed. The lifting mechanism uses an existing hydraulic lifting rod.

8. The trenching device with adjustable trenching depth and width according to claim 1, characterized in that: The shovel assembly includes a soil-breaking shovel fixed to the side of the mounting bracket facing the adjustment box, a trenching shovel rotatably connected to the mounting bracket and located on both sides of the soil-breaking shovel, and a telescopic mechanism located between the trenching shovel and the mounting bracket for adjusting the angle of the trenching shovel; the soil-breaking shovel is a right-angled trapezoid; the telescopic mechanism uses an electric push rod.

9. The trenching device with adjustable trenching depth and width according to claim 1, characterized in that: The fixed base includes a U-shaped frame and a mounting base. The U-shaped frame includes a horizontal section and two vertical sections on both sides. The rotating drum is rotatably connected between the two vertical sections. The mounting base is fixed to the top of the horizontal section and has threaded mounting holes that match the external moving vehicle.