Pipe trench excavation and backfill all-in-one machine
By designing an integrated machine for trench excavation and backfilling, and using a servo motor and limit plate to adjust the U-shaped adjustment frame, combined with a telescopic plate and a fixed frame, automatic trench excavation and backfilling are achieved, solving the problem of the lack of a backfilling mechanism in existing equipment and improving construction efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI HEXIANG CONSTR ENG CO LTD
- Filing Date
- 2025-06-12
- Publication Date
- 2026-05-19
AI Technical Summary
Existing trenching equipment lacks a backfilling mechanism, which means that backfilling requires manual labor or additional machinery, reducing the practicality of trenching machines and the efficiency of underground pipeline laying.
An integrated machine for excavating and backfilling pipeline trenches was designed. It adopts a servo motor and a limit plate to adjust the U-shaped adjustment frame, combined with a telescopic plate and a fixed frame to realize automatic soil backfilling. The cutter head is driven to rotate by an electric push rod and a drive motor to excavate and backfill trenches.
It improves the practicality of the equipment and the efficiency of underground pipeline laying, realizes automatic trench backfilling, reduces manual intervention, and improves construction efficiency and safety.
Smart Images

Figure CN224259482U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipeline laying technology, specifically to an integrated machine for pipeline trench excavation and backfilling. Background Technology
[0002] Underground pipeline laying involves installing pipes underground to transport liquids, gases, or loose solids. This requires excavating trenches in the ground to facilitate the installation of the pipelines.
[0003] In the current process of excavating pipeline trenches, trenching machines are used. Typically, the drive shaft and rear axle drive the trenching mechanism to cut pipeline trenches in a straight line on the ground. However, trenching machines can only excavate trenches and do not have a backfilling mechanism. They cannot backfill the soil generated during trench excavation into the trench, requiring manual labor or additional machinery to backfill the soil. This reduces the practicality of trenching machines and is not conducive to the laying of underground pipelines.
[0004] Therefore, this utility model provides an integrated machine for excavating and backfilling pipeline trenches. Utility Model Content
[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide an integrated machine for trench excavation and backfilling of pipelines, thereby solving the problems mentioned in the background section. This invention utilizes a servo motor, a limit plate, and other adjustment mechanisms to rotate and adjust the U-shaped adjustment frame, facilitating the adjustment of the backfilling mechanisms, such as the fixed plate, fixed frame, and telescopic plate, below the U-shaped adjustment frame. Furthermore, the telescopic plate and fixed frame move the soil from both sides of the trench into the trench, facilitating backfilling and improving the practicality of the integrated machine, thus increasing the efficiency of underground pipeline laying.
[0006] To achieve the above objectives, this utility model provides the following technical solution: an integrated machine for trench excavation and backfilling, comprising a machine body and a trenching mechanism. A U-shaped adjusting frame is movably mounted on one side of the machine body via an adjusting mechanism. The trenching mechanism is movably mounted inside the U-shaped adjusting frame via an electric push rod. The trenching mechanism includes a lifting plate, a mounting plate, and a cutter head. The mounting plate is symmetrically fixed on the front and rear sides of the bottom of the lifting plate. The cutter head is rotatably mounted between the bottom ends of the mounting plate via a shaft fixed at its front and rear center positions. A fixing plate is fixedly mounted on the inner side of the front end of the U-shaped adjusting frame. A backfilling mechanism is symmetrically arranged on the front side of the fixing plate. The backfilling mechanism includes a fixing frame. A telescopic plate slides and extends within the fixing frame. A fixing bolt is screwed onto one side of the fixing plate, with one end of the fixing bolt in contact with the telescopic plate. A support plate is movably mounted inside one end of the U-shaped adjusting frame via a through groove.
[0007] Furthermore, a traction frame is fixedly installed on one side of the outer wall of the machine body, and wheels are movably installed on the front and rear sides of the bottom of the machine body through a rotating shaft. The interior of the machine body has a battery compartment and a storage compartment.
[0008] Furthermore, the adjustment mechanism includes a servo motor, which is fixedly installed inside the storage compartment. A rechargeable battery is installed inside the battery compartment, and the bottom end of the U-shaped adjustment frame is fixedly installed at one end of the output shaft of the servo motor.
[0009] Furthermore, a limit plate is fixedly installed on the outer wall of the bottom end of the machine body at the position corresponding to the output shaft of the servo motor. The limit plate is installed inside the bottom end of the U-shaped adjustment frame to limit rotation, and the output rotation of the servo motor is installed at the center position inside the limit plate.
[0010] Furthermore, the through groove is vertically opened inside one end of the U-shaped adjusting frame, the top of the support plate is slidably installed inside the through groove, and pin holes are opened inside the bottom end of the through groove and the upper and lower ends of the support plate, with pins installed inside the pin holes.
[0011] Furthermore, limit rods are fixedly installed at the four corners of the top wall on the inner side of the U-shaped adjustment frame, and the lifting plate is slidably mounted on the limit rods through sliding holes opened at its four corners. The lifting plate is located on the inner side of the U-shaped adjustment frame, and the electric push rod is fixedly installed at the center of the top of the U-shaped adjustment frame.
[0012] Furthermore, the bottom end of the output rod of the electric push rod is fixedly connected to the lifting plate, the limiting rod is symmetrically arranged on the front and rear sides of the cutter disc, and the surface of the cutter disc is welded and fixed with protrusions.
[0013] Furthermore, a fixing box is fixedly installed on the outer wall of the rear mounting plate, and a drive motor is fixedly installed on the outer wall of the fixing box. A first gear is fixedly installed on the output shaft of the drive motor corresponding to the inside of the fixing box. A second gear is meshed and rotatably installed below the first gear, and the second gear is fixedly installed on the rotating shaft at the rear end of the cutter head.
[0014] The beneficial effects of this utility model are as follows: This utility model provides an integrated machine for trench excavation and backfilling of pipelines. An electric push rod lowers the lifting plate, mounting plate, and cutter head, while a drive motor, first gear, and second gear drive the rotating disc, facilitating trench excavation. A servo motor and limit plate, among other adjustment mechanisms, allow for the rotation and adjustment of the U-shaped adjustment frame, facilitating the adjustment of the backfilling mechanism, including the fixed plate, fixed frame, and telescopic plate, below the U-shaped adjustment frame. The telescopic plate and fixed frame also move soil from both sides of the trench into the trench, facilitating backfilling and improving the practicality of the integrated machine, thus increasing the efficiency of underground pipeline laying. By placing the support plate in contact with the ground and installing pins in the pin holes inside the through-groove and support plate, the support plate is easily positioned, allowing it to support the U-shaped adjustment frame and facilitating the placement of the integrated machine. The cutter head is located inside the U-shaped adjustment frame, improving the safety of the integrated machine. Attached Figure Description
[0015] Figure 1 This is a structural diagram of an integrated machine for excavating and backfilling pipeline trenches according to this utility model;
[0016] Figure 2 This is a rear sectional view of a pipeline trench excavation and backfilling integrated machine according to the present invention;
[0017] Figure 3 This utility model relates to an integrated machine for excavating and backfilling pipeline trenches. Figure 2 Enlarged view of point A in the middle;
[0018] Figure 4 This is a structural diagram of the integrated machine for excavating and backfilling pipeline trenches according to the present invention.
[0019] Figure 5 This is a structural diagram of the trenching mechanism of an integrated machine for trench excavation and backfilling of pipelines according to this utility model;
[0020] Figure 6 This is a structural diagram of the lifting frame of an integrated machine for excavating and backfilling pipeline trenches according to this utility model;
[0021] In the diagram: 1. Body; 2. Traction frame; 3. Wheel; 4. U-shaped adjustment frame; 5. Slotting mechanism; 6. Through slot; 7. Support plate; 8. Fixing plate; 9. Fixing frame; 10. Telescopic plate; 11. Fixing bolt; 12. Battery compartment; 13. Servo motor; 14. Limit plate; 15. Lifting plate; 16. Limit rod; 17. Mounting plate; 18. Electric push rod; 19. Cutter head; 20. Pin hole; 21. Pin; 22. First gear; 23. Second gear; 24. Fixing box; 25. Drive motor. Detailed Implementation
[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0023] Please see Figures 1 to 6 This utility model provides a technical solution: an integrated machine for trench excavation and backfilling of pipelines, including a machine body 1 and a trenching mechanism 5. A U-shaped adjusting frame 4 is movably installed on one side of the machine body 1 via an adjusting mechanism. The trenching mechanism 5 is movably disposed inside the U-shaped adjusting frame 4 via an electric push rod 18. The trenching mechanism 5 includes a lifting plate 15, a mounting plate 17, and a cutter head 19. The mounting plate 17 is symmetrically fixedly disposed on the front and rear sides of the bottom of the lifting plate 15. The cutter head 19 is rotatably mounted between the bottom ends of the mounting plate 17 via a shaft fixedly disposed at its front and rear center positions. A fixing plate 8 is fixedly disposed on the inner side of the front end of the U-shaped adjusting frame 4. Symmetrically disposed on the front side of the fixing plate 8 are... The backfilling mechanism includes a fixed frame 9, with a telescopic plate 10 sliding inside the fixed frame 9. A fixing bolt 11 is screwed onto one side of the fixed plate 8, with one end of the fixing bolt 11 pressing against the telescopic plate 10. A support plate 7 is movably installed inside one end of the U-shaped adjusting frame 4 through a through groove 6. The backfilling mechanism can be adjusted to be below the U-shaped adjusting frame 4 by rotating the adjusting mechanism. The fixing bolt 11 can press and fix the telescopic plate 10, which facilitates the use of the telescopic plate 10 and the fixed frame 9 to backfill the soil on both sides of the trench when the integrated machine is moved. This improves the practicality of the integrated machine and increases the efficiency of pipeline laying.
[0024] In this embodiment, a traction frame 2 is fixedly installed on one side of the outer wall of the machine body 1. Wheels 3 are movably installed on the front and rear sides of the bottom end of the machine body 1 via rotating shafts. The machine body 1 has a battery compartment 12 and a storage compartment inside. The adjustment mechanism includes a servo motor 13, which is fixedly installed inside the storage compartment. A rechargeable battery is installed inside the battery compartment 12. The bottom end of the U-shaped adjustment frame 4 is fixedly installed at one end of the output shaft of the servo motor 13. A limit plate 14 is fixedly installed on the outer wall of the bottom end of the machine body 1 at the position corresponding to the output shaft of the servo motor 13. The limit plate 14 is installed inside the bottom end of the U-shaped adjustment frame 4 for limiting rotation. The output rotation of the servo motor 13 is installed at the center position inside the limit plate 14. The traction frame 2 facilitates the fixed connection between the integrated machine and traction equipment such as a tractor, thereby facilitating the movement of the integrated machine via the wheels 3. The rechargeable battery can power the servo motor 13, drive motor 25, and electric push rod 18, facilitating subsequent trench excavation.
[0025] In this embodiment, the through groove 6 is vertically opened inside one end of the U-shaped adjusting frame 4. The top end of the support plate 7 is slidably installed inside the through groove 6. The bottom end of the through groove 6 and the upper and lower ends of the support plate 7 are provided with pin holes 20. The pin holes 20 are fitted with pins 21. The support plate 7 and the U-shaped adjusting frame 4 can be fixed by the pins 21 and the pin holes 20, which facilitates the support of the U-shaped adjusting frame 4, facilitates the placement of the integrated machine, and can also separate the support plate 7 from the ground, which facilitates the movement of the integrated machine and the excavation of trenches.
[0026] In this embodiment, limit rods 16 are fixedly installed at the four corners of the top wall on the inner side of the U-shaped adjusting frame 4. The lifting plate 15 is slidably mounted on the limit rods 16 through sliding holes opened at its four corners. The lifting plate 15 is located on the inner side of the U-shaped adjusting frame 4. The electric push rod 18 is fixedly installed at the center of the top of the U-shaped adjusting frame 4. The bottom end of the output rod of the electric push rod 18 is fixedly connected to the lifting plate 15. The limit rods 16 are symmetrically arranged on the front and rear sides of the cutter head 19. The surface of the cutter head 19 is welded and fixed with protrusions. A fixing box 24 is fixedly installed on the outer wall of the rear mounting plate 17. The outer wall of the fixing box 24 is fixed with... A drive motor 25 is fixedly installed, and a first gear 22 is fixedly installed on the output shaft of the drive motor 25 corresponding to the inner side of the fixed box 24. A second gear 23 is meshed and rotatably installed below the first gear 22. The second gear 23 is fixedly installed on the rotating shaft at the rear end of the cutter head 19. The drive motor 25, the first gear 22 and the second gear 23 can drive the shaft and the cutter head 19 to rotate. The electric push rod 18 can adjust the lowering of the lifting plate 15. The lifting plate 15 drives the cutter head 19 to descend through the mounting plate 17, which facilitates trench excavation. The limit rod 16 can limit the lifting plate 15, thereby improving the stability of the lifting plate 15.
[0027] When using this integrated trench excavation and backfilling machine, the machine body 1 is fixedly connected to the tractor or other traction equipment via the traction frame 2. The pin 21 is removed from the pin hole 20, and the support plate 7 is moved upwards inside the through groove 6, separating the bottom of the support plate 7 from the ground. After adjusting the support plate 7 to its highest position, the pin 21 is reinserted into the pin hole 20 to secure the support plate 7 to the U-shaped adjustment frame 4. The drive mechanism and traction frame 2 move the integrated machine to the location where the trench needs to be excavated. The integrated machine is equipped with a control switch, which is electrically connected to a rechargeable battery, servo motor 13, drive motor 25, and electric push rod 18 via cables. The control switch... The circuitry controlling the electric push rod 18 operates the electric push rod 18. The output rod of the electric push rod 18 drives the lifting plate 15 to slide and descend under the limit of the limiting rod 16. The lifting plate 15 drives the cutter head 19 to descend and contact the ground through the mounting plate 17 and the shaft. The circuitry and control switch of the drive motor 25 control the start of the drive motor 25. The drive motor 25 drives the first gear 22 to rotate. Through the meshing of the first gear 22 and the second gear 23, the shaft and the cutter head 19 are easily rotated, facilitating grooving through the cutter head 19 and its surface protrusions. At the same time, the electric push rod 18, the lifting plate 15, and the mounting plate 17 drive the cutter head 19 to continue to descend, lowering the bottom of the cutter head 19. The machine is driven into the ground and moved in a straight line by the traction equipment to facilitate trench excavation. After the trench is excavated, the machine is moved to the beginning of the trench and the pipe is laid in the trench. The servo motor 13 is controlled by the control switch and the matching circuit of the servo motor 13. The servo motor 13 drives the U-shaped adjusting frame 4 to rotate under the limit of the limiting plate 14. The U-shaped adjusting frame 4 drives the backfilling mechanism such as the trenching mechanism 5 and the fixed plate 8 to rotate. The U-shaped adjusting frame 4 and the fixed plate 8 are adjusted to a horizontal state. At this time, the backfilling mechanism such as the fixed frame 9 and the telescopic plate 10 are below the fixed plate 8. The fixing bolts 11 are loosened so that the telescopic plate 10 moves downward inside the fixed frame 9 and contacts the ground. Tighten the fixing bolts 11 to press and fix the telescopic plate 10. Move the integrated machine by the traction device. The integrated machine drives the backfilling mechanism through the U-shaped adjustment frame 4 to move the soil on both sides of the top of the trench, which facilitates backfilling of the trench, thereby improving the practicality of the integrated machine and improving the efficiency of underground pipeline laying. After use, move the integrated machine to the placement position and put the support plate 7 into contact with the ground. Limit the support plate 7 through the pins 21 and pin holes 20 so that the support plate 7 can support the U-shaped adjustment frame 4, which is convenient for placing the integrated machine. The cutter head 19 is set inside the U-shaped adjustment frame 4, which can improve the safety of the integrated machine.
[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A pipe trench excavation and backfilling integrated machine, comprising a machine body (1) and a trenching mechanism (5), characterized in that, A U-shaped adjusting frame (4) is movably mounted on one side of the machine body (1) via an adjusting mechanism. The grooving mechanism (5) is movably mounted inside the U-shaped adjusting frame (4) via an electric push rod (18). The grooving mechanism (5) includes a lifting plate (15), a mounting plate (17), and a cutter head (19). The mounting plate (17) is symmetrically fixed on the front and rear sides of the bottom of the lifting plate (15). The cutter head (19) is rotatably mounted between the bottom ends of the mounting plate (17) via a shaft fixed at its front and rear center positions. A fixing plate (8) is fixedly installed on the inner side of the front end of the U-shaped adjustment frame (4). A backfilling mechanism is symmetrically arranged on the front side of the fixing plate (8). The backfilling mechanism includes a fixing frame (9). A telescopic plate (10) is telescopically slidably installed inside the fixing frame (9). A fixing bolt (11) is screwed onto one side of the fixing plate (8). One end of the fixing bolt (11) is pressed against the telescopic plate (10). A support plate (7) is movably installed inside one end of the U-shaped adjustment frame (4) through a through groove (6).
2. The integrated machine for excavating and backfilling pipeline trenches according to claim 1, characterized in that: A traction frame (2) is fixedly installed on one side of the outer wall of the body (1). Wheels (3) are movably installed on the front and rear sides of the bottom end of the body (1) through a rotating shaft. A battery compartment (12) and a storage compartment are opened inside the body (1).
3. The integrated machine for trench excavation and backfilling of pipelines according to claim 2, characterized in that: The adjustment mechanism includes a servo motor (13), which is fixedly installed inside the storage compartment. A rechargeable battery is installed inside the battery compartment (12). The bottom end of the U-shaped adjustment frame (4) is fixedly set at one end of the output shaft of the servo motor (13).
4. The integrated machine for trench excavation and backfilling of pipelines according to claim 3, characterized in that: A limiting disk (14) is fixedly installed on the outer wall of the bottom end of the machine body (1) at the position of the output shaft of the servo motor (13). The limiting disk (14) is installed inside the bottom end of the U-shaped adjustment frame (4) for limiting rotation. The output rotation of the servo motor (13) is installed at the center position inside the limiting disk (14).
5. The integrated machine for trench excavation and backfilling of pipelines according to claim 1, characterized in that: The through groove (6) is vertically opened inside one end of the U-shaped adjustment frame (4). The top end of the support plate (7) is slidably installed inside the through groove (6). The bottom end of the through groove (6) and the upper and lower ends of the support plate (7) are provided with pin holes (20). A pin (21) is installed inside the pin hole (20).
6. The integrated machine for trench excavation and backfilling of pipelines according to claim 1, characterized in that: Limiting rods (16) are fixedly installed at the four corners of the top wall on the inner side of the U-shaped adjustment frame (4). The lifting plate (15) is slidably installed on the limiting rods (16) through the sliding holes opened at its four corners. The lifting plate (15) is located on the inner side of the U-shaped adjustment frame (4). The electric push rod (18) is fixedly installed at the center of the top of the U-shaped adjustment frame (4).
7. The integrated machine for trench excavation and backfilling of pipelines according to claim 6, characterized in that: The bottom end of the output rod of the electric push rod (18) is fixedly connected to the lifting plate (15), the limiting rod (16) is symmetrically arranged on the front and rear sides of the cutter head (19), and the surface of the cutter head (19) is welded and fixed with protrusions.
8. The integrated machine for excavating and backfilling pipeline trenches according to claim 7, characterized in that: A fixed box (24) is fixedly installed on the outer wall of the mounting plate (17) on the rear side. A drive motor (25) is fixedly installed on the outer wall of the fixed box (24). A first gear (22) is fixedly installed on the output shaft of the drive motor (25) corresponding to the inside of the fixed box (24). A second gear (23) is meshed and rotated below the first gear (22). The second gear (23) is fixedly installed on the rotating shaft at the rear end of the cutter head (19).