Layered compaction and detection integrated equipment for slotting and backfilling
By installing an integrated layered compaction and testing device on an excavator, the soil is compacted using a roller assembly, prevented from sticking by a scraper assembly, and the compaction degree is detected by a testing assembly. This solves the problem of substandard compaction degree in existing technologies and improves the overall compaction degree and safety of soil backfilling.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HARBIN URBAN DRAINAGE ENGINEERING CO LTD
- Filing Date
- 2025-05-19
- Publication Date
- 2026-04-17
AI Technical Summary
Existing pipeline trench backfilling equipment lacks compaction testing capabilities, resulting in substandard compaction and a risk of collapse.
Design a layered compaction and testing integrated device for trench backfilling, including a support component, a pressure roller component, a scraper component, and a testing component. The pressure roller component is controlled by an excavator to compact the soil, the scraper component prevents soil adhesion, and the testing component detects the soil compaction degree in real time to ensure that the compaction degree is qualified before backfilling.
It improves the overall compaction of soil after backfilling, avoids the risk of collapse, and ensures the quality of soil backfilling through layered compaction and detection functions.
Smart Images

Figure CN224133764U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of pipeline trench backfilling technology, and in particular relates to an integrated equipment for layered compaction and testing of trench backfilling. Background Technology
[0002] Existing pipeline trench backfilling equipment lacks compaction testing capabilities and often relies on experience to estimate compaction, which can easily lead to substandard compaction and the risk of collapse over time.
[0003] For example, patent application number CN202421209670.X describes a pipeline trench compaction device, including a mounting frame connected to the mechanical arm and hydraulic arm of an excavator. A hydraulic drive device is installed inside the mounting frame, and a compaction plate is fixedly connected to the output end of the hydraulic drive device. The compaction plate is equipped with a side-pressing component. The side-pressing component includes two hydraulic cylinders fixedly connected to the compaction plate. A vertical rod is fixedly connected to the output end of each hydraulic cylinder, and the bottom of each vertical rod is fixedly connected to a sliding plate. Each sliding plate is slidably connected to the compaction plate. An adjustment component is also provided on the compaction plate. However, the drawback of this technical solution is that the pipeline trench compaction device lacks a compaction degree detection function, which can easily lead to substandard compaction degrees and a risk of collapse over time. Utility Model Content
[0004] The purpose of this utility model is to provide an integrated device for layered compaction and testing of trench backfilling, so as to solve the problems in the prior art. The specific technical solution is as follows:
[0005] A layered compaction and testing integrated device for trench backfilling includes a support assembly, which is mounted on the mechanical arm and hydraulic arm of an excavator. Both ends of the support assembly are rotatably connected to the pressure roller assembly via bearings. A scraper assembly is provided on one side of the support assembly, which is slidably connected to the pressure roller assembly. A testing assembly is provided on the other side of the support assembly, and the testing assembly is connected to the hydraulic system of the excavator.
[0006] Furthermore, the support assembly includes a mounting frame, which is installed on the excavator's mechanical arm and hydraulic arm. Protective plates are provided on both longitudinal sides of the mounting frame, and upper support plates are provided on both transverse sides of the mounting frame. The upper support plates and lower support plates are fixedly installed by screws. Bearings are provided between the upper support plates and lower support plates. The protective plates are rotatably connected to the scraper assembly. The mounting frame is fixedly installed with the detection assembly.
[0007] Furthermore, the pressure roller assembly includes a threaded shaft, both ends of which are rotatably connected to bearings. Multiple pressure roller units are provided on the threaded shaft, with adjacent pressure roller units being inserted and fixed together. The pressure roller unit located in the middle position is fixedly connected to the threaded shaft.
[0008] Furthermore, each end of the threaded shaft is threaded with a limit nut, which fits against the inner side of the upper support plate. Two locking nuts are threaded on the threaded shaft, and the end face of the locking nuts abuts against the pressure roller unit at the edge.
[0009] Furthermore, the pressure roller unit includes an outer ring frame, an inner support plate is fixed inside the outer ring frame, an installation hole is provided in the middle of the inner support plate, a protrusion is provided on the outer ring frame on one side of the inner support plate, and a groove is provided on the outer ring frame on the other side of the inner support plate.
[0010] Furthermore, the scraper assembly includes a scraper, both ends of which are rotatably connected to the protective plate, the lower end of the scraper is slidably connected to the pressure roller unit, and a spring is provided between the end of the scraper and the protective plate.
[0011] Furthermore, the detection component includes a bracket, which is fixed on the mounting frame and fixedly connected to a hydraulic cylinder. The hydraulic cylinder is connected to the hydraulic system of the excavator, and the output end of the hydraulic cylinder is connected to a fixed plate.
[0012] Furthermore, the fixed disk is threadedly fixed inside the fixed tube, and a sliding disk is slidably connected inside the fixed tube. A pressure spring is provided between the fixed disk and the sliding disk, a pointer is provided on the side of the sliding disk, and a first scale line is provided on the outside of the fixed tube.
[0013] Furthermore, a connecting rod is fixed to the lower end of the sliding disc, the connecting rod is slidably connected to the second bracket, the second bracket is fixed to the protective plate, the connecting rod is provided with a second scale line, and a ground-contact support plate is fixed to the lower end of the connecting rod.
[0014] Furthermore, a support rod is fixed to the lower end of the fixed plate, and the sliding plate and the connecting rod are slidably connected to the support rod.
[0015] The advantages of this utility model are:
[0016] The integrated trench backfilling, layered compaction, and testing equipment is mounted on an excavator via a support assembly. Soil from the perimeter of the trench is backfilled into the trench, and the excavator controls the pressure roller assembly to compact the soil. A scraper assembly prevents soil from adhering to the pressure roller assembly, and the testing assembly checks whether the soil compaction degree is up to standard. If the soil compaction degree is not up to standard, the excavator controls the pressure roller assembly to continue compacting the soil. If the soil compaction degree is up to standard, more soil from the perimeter of the trench is backfilled into the trench, and the pressure roller assembly continues to compact the soil. Through layered compaction and soil compaction degree testing, the overall compaction degree of the backfilled soil can be improved. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the support component structure of this utility model;
[0019] Figure 3 This is a schematic diagram of the pressure roller assembly structure of this utility model;
[0020] Figure 4 This is a schematic diagram of the scraper assembly structure of this utility model;
[0021] Figure 5 This is a schematic diagram of the pressure roller unit structure of this utility model. Figure 1 ;
[0022] Figure 6 This is a schematic diagram of the pressure roller unit structure of this utility model. Figure 2 ;
[0023] Figure 7 This is a schematic diagram of the detection component structure of this utility model. Figure 1 ;
[0024] Figure 8 This is a schematic diagram of the detection component structure of this utility model. Figure 2 ;
[0025] Explanation of markings in the diagram:
[0026] Mounting bracket 1; Protective plate 2; Upper support plate 3; Lower support plate 4; Bearing 5; Threaded shaft 6; Pressure roller unit 7; Outer ring frame 701; Inner support plate 702; Mounting hole 703; Protrusion 704; Groove 705; Locking nut 8; Scraper 9; Spring 10; Bracket 1 11; Bracket 2 12; Hydraulic cylinder 13; Fixed plate 14; Fixed pipe 15; First scale line 16; Pressure spring 17; Sliding plate 18; Connecting rod 19; Second scale line 20; Ground contact plate 21; Limiting nut 22; Support rod 23. Detailed Implementation
[0027] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0029] Example 1
[0030] like Figure 1-8 As shown, a layered compaction and testing integrated device for trench backfilling includes a support assembly, which is installed on the mechanical arm and hydraulic arm of an excavator. Both ends of the support assembly are rotatably connected to the pressure roller assembly through bearings 5. A scraper assembly is provided on one side of the support assembly, which is slidably connected to the pressure roller assembly. A testing assembly is provided on the other side of the support assembly, and the testing assembly is connected to the hydraulic system of the excavator.
[0031] The working principle of the above technical solution is as follows: The integrated equipment for trench backfilling, layered compaction, and testing is installed on an excavator via a support assembly. Soil from the periphery of the trench is backfilled into the trench. The excavator controls the pressure roller assembly to compact the soil. A scraper assembly prevents soil from adhering to the pressure roller assembly. The testing assembly detects whether the soil compaction degree is up to standard. If the soil compaction degree is not up to standard, the excavator controls the pressure roller assembly to continue compacting the soil. If the soil compaction degree is up to standard, more soil from the periphery of the trench is backfilled into the trench, and the pressure roller assembly continues to compact the soil. Through layered compaction and testing functions, the overall compaction degree of the backfilled soil can be improved.
[0032] Example 2
[0033] like Figure 1-8 As shown, the support assembly includes a mounting frame 1, which is mounted on the excavator's mechanical arm and hydraulic arm. Protective plates 2 are provided on both longitudinal sides of the mounting frame 1, and upper support plates 3 are provided on both transverse sides of the mounting frame 1. The upper support plates 3 and lower support plates 4 are fixedly installed by screws. Bearings 5 are provided between the upper support plates 3 and lower support plates 4. The protective plates 2 are rotatably connected to the scraper assembly. The mounting frame 1 is fixedly installed to the detection assembly.
[0034] The working principle of the above technical solution is as follows: The upper end of the mounting bracket 1 is installed on the mechanical arm and hydraulic arm of the excavator. The protective plate 2 can prevent people from accidentally touching the pressure roller assembly. The upper support plate 3 and the lower support plate 4 are fixedly installed by screws. The screws can be removed, the lower support plate 4 can be removed, and then the bearing 5 can be removed. The pressure roller assembly can be separated from the bearing 5, and then the pressure roller assembly can be cleaned or adjusted.
[0035] Example 3
[0036] like Figure 1-8 As shown, the pressure roller assembly includes a threaded shaft 6, both ends of which are rotatably connected to bearings 5. Multiple pressure roller units 7 are provided on the threaded shaft 6, with adjacent pressure roller units 7 being inserted and fixed together. The pressure roller unit 7 located in the middle position is fixedly connected to the threaded shaft 6.
[0037] Each end of the threaded shaft 6 is threaded with a limiting nut 22, which fits against the inner side of the upper support plate 3. Two locking nuts 8 are threaded on the threaded shaft 6, and the end face of the locking nut 8 abuts against the pressure roller unit 7 at the edge position.
[0038] The pressure roller unit 7 includes an outer ring frame 701, an inner support plate 702 fixed inside the outer ring frame 701, an installation hole 703 in the middle of the inner support plate 702, a protrusion 704 on the outer ring frame 701 located on one side of the inner support plate 702, and a groove 705 on the outer ring frame 701 located on the other side of the inner support plate 702.
[0039] The working principle of the above technical solution is as follows: Remove the screws that fix the upper support plate 3 and the lower support plate 4, remove the lower support plate 4, remove the bearing 5, separate the bearing 5 from the threaded shaft 6, remove the two limiting nuts 22 from both ends of the threaded shaft 6 by rotating them, and then remove the two locking nuts 8 from both ends of the threaded shaft 6 by rotating them. More pressure roller units 7 can be fitted onto the threaded shaft 6, or some pressure roller units 7 on the threaded shaft 6 can be removed, thereby changing the number of pressure roller units 7 on the threaded shaft 6, thereby changing the compaction width of the pressure roller assembly, and adapting to the compaction of soil in trenches of different widths.
[0040] The pressure roller unit 7 is sleeved onto the threaded shaft 6 through the mounting hole 703 in the middle of the inner support plate 702. The outer ring frame 701 is inserted into the adjacent outer ring frame 701. The protrusion 704 on the outer ring frame 701 is inserted into the groove 705 of the adjacent outer ring frame 701, thus completing the fixation between the two adjacent pressure roller units 7.
[0041] Two locking nuts 8 are screwed into the threaded shaft 6 from both ends. The two locking nuts 8 abut against the two edge pressure roller units 7 respectively. The end face of the locking nuts 8 abuts directly against the inner support plate 702, thereby fixing multiple pressure roller units 7 to the threaded shaft 6.
[0042] Screw the two limiting nuts 22 into the threaded shaft 6 from both ends respectively, install the two bearings 5 at both ends of the threaded shaft 6, install the bearings 5 between the upper support plate 3 and the lower support plate 4, fix the upper support plate 3 and the lower support plate 4 with screws, and rotate the limiting nuts 22 again so that the limiting nuts 22 fit against the inner wall of the upper support plate 3.
[0043] Through the above operations, the compaction width of the roller assembly can be adjusted to adapt to the compaction of soil in trenches of different widths, demonstrating strong adaptability.
[0044] Example 4
[0045] like Figure 1-8As shown, the scraper assembly includes a scraper 9, both ends of which are rotatably connected to the protective plate 2. The lower end of the scraper 9 is slidably connected to the pressure roller unit 7. A spring 10 is provided between the end of the scraper 9 and the protective plate 2.
[0046] The working principle of the above technical solution is as follows: the scraper 9 can scrape the soil off the pressure roller unit 7, preventing the soil from sticking to the pressure roller unit 7 for a long time. Under the elastic force of the spring 10, the front end of the scraper 9 can always be in contact with the outer wall of the pressure roller unit 7, increasing the effect of scraping the soil.
[0047] Example 5
[0048] like Figure 1-8 As shown, the detection component includes a bracket 11, which is fixed on the mounting frame 1. The bracket 11 is fixedly connected to a hydraulic cylinder 13, which is connected to the hydraulic system of the excavator. The output end of the hydraulic cylinder 13 is connected to the fixed plate 14.
[0049] The fixed disk 14 is threadedly fixed inside the fixed tube 15. A sliding disk 18 is slidably connected inside the fixed tube 15. A pressure spring 17 is provided between the fixed disk 14 and the sliding disk 18. A pointer is provided on the side of the sliding disk 18. A first scale line 16 is provided on the outside of the fixed tube 15.
[0050] The lower end of the sliding disk 18 is fixed with a connecting rod 19, which is slidably connected to the bracket 2 12. The bracket 2 12 is fixed on the protective plate 2. The connecting rod 19 is provided with a second scale line 20, and the lower end of the connecting rod 19 is fixed with a ground-contact support plate 21.
[0051] The working principle of the above technical solution is as follows: After the soil is compacted by the pressure roller assembly, the hydraulic cylinder 13 is activated, which drives the fixed plate 14 to move down, drives the fixed pipe 15 to move down, and drives the connecting rod 19 and the ground contact plate 21 to move down. When the ground contact plate 21 moves down to contact the ground, the zero mark of the second scale line 20 on the connecting rod 19 coincides with the upper surface of the second support 12. The hydraulic cylinder 13 continues to work, and the ground support force drives the ground contact plate 21 and the connecting rod 19 to move up, which drives the sliding plate 18 to slide up in the fixed pipe 15, which drives the pressure spring 17 to be compressed. The pointer set on the side of the sliding plate 18 points to the first scale line 16. Under a certain pressure, the ground contact plate 21 will sink into the compacted soil. The preset scale on the second scale line 20 coincides with the upper surface of the second support 12, which is the preset depth to which the ground contact plate 21 sinks. The pointer set on the side of the sliding plate 18 points to the scale on the first scale line 16, which is the current soil compaction degree.
[0052] When the soil compaction is insufficient, the ground support plate 21 can easily sink into the preset depth, the compression amplitude of the pressure spring 17 is small, and the pointer on the side of the sliding plate 18 points to a small scale on the first scale line 16.
[0053] When the soil compaction is sufficient, the ground support plate 21 is not easy to sink into the preset depth, the pressure spring 17 has a large compression amplitude, and the pointer set on the side of the sliding plate 18 points to a large scale on the first scale line 16.
[0054] By allowing the ground support plate 21 to sink into the soil to a preset depth, it is possible to check whether the compression amplitude of the pressure spring 17 meets the standard, and thus determine whether the soil compaction meets the standard, which is convenient and quick.
[0055] Example 6
[0056] like Figure 1-8 As shown, a support rod 23 is fixed to the lower end of the fixed plate 14, and the sliding plate 18 and the connecting rod 19 are slidably connected to the support rod 23.
[0057] The working principle of the above technical solution is as follows: by setting the support rod 23, the stability of the sliding disk 18 sliding within the fixed tube 15 is ensured.
[0058] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.
Claims
1. A layered compaction and detection integrated device for trench backfilling, characterized by, It includes a support assembly, which is installed on the excavator's mechanical arm and hydraulic arm. Both ends of the support assembly are rotatably connected to the pressure roller assembly through bearings (5). A scraper assembly is provided on one side of the support assembly, which is slidably connected to the pressure roller assembly. A detection assembly is provided on the other side of the support assembly, which is connected to the excavator's hydraulic system.
2. The layered compaction and detection integrated device for trench backfilling according to claim 1, characterized in that, The support assembly includes a mounting frame (1), which is mounted on the excavator's mechanical arm and hydraulic arm. The mounting frame (1) has protective plates (2) on both longitudinal sides and upper support plates (3) on both transverse sides. The upper support plates (3) and lower support plates (4) are fixedly installed by screws. The bearing (5) is located between the upper support plates (3) and lower support plates (4). The protective plates (2) are rotatably connected to the scraper assembly. The mounting frame (1) is fixedly installed to the detection assembly.
3. The layered compaction and detection integrated device for trench backfilling according to claim 2, characterized in that, The pressure roller assembly includes a threaded shaft (6), both ends of which are rotatably connected to bearings (5). Multiple pressure roller units (7) are provided on the threaded shaft (6), with adjacent pressure roller units (7) being inserted and fixed together. The pressure roller unit (7) located in the middle position is fixedly connected to the threaded shaft (6).
4. The layered compaction and detection integrated device for trench backfilling according to claim 3, characterized in that, The ends of the threaded shaft (6) are all threaded with limit nuts (22), which fit against the inner side of the upper support plate (3). The threaded shaft (6) is threaded with two locking nuts (8), and the end face of the locking nuts (8) abuts against the pressure roller unit (7) at the edge position.
5. The device for layering, compacting and detecting according to claim 4, characterized in that, The pressure roller unit (7) includes an outer ring frame (701), an inner support plate (702) is fixed inside the outer ring frame (701), an installation hole (703) is provided in the middle of the inner support plate (702), a protrusion (704) is provided on the outer ring frame (701) located on one side of the inner support plate (702), and a groove (705) is provided on the outer ring frame (701) located on the other side of the inner support plate (702).
6. The layered compaction and detection integrated device for trench backfilling according to claim 5, characterized in that, The scraper assembly includes a scraper (9), both ends of which are rotatably connected to the protective plate (2). The lower end of the scraper (9) is slidably connected to the pressure roller unit (7). A spring (10) is provided between the end of the scraper (9) and the protective plate (2).
7. The device for layering, compacting and detecting according to claim 6, characterized in that, The detection component includes a bracket (11), which is fixed on the mounting frame (1). The bracket (11) is fixedly connected to a hydraulic cylinder (13), which is connected to the hydraulic system of the excavator. The output end of the hydraulic cylinder (13) is connected to the fixed plate (14).
8. The device for layered compaction and detection of backfilling with slotting according to claim 7, characterized in that The fixed plate (14) is threadedly fixed inside the fixed tube (15). A sliding plate (18) is slidably connected inside the fixed tube (15). A pressure spring (17) is provided between the fixed plate (14) and the sliding plate (18). A pointer is provided on the side of the sliding plate (18). A first scale line (16) is provided on the outside of the fixed tube (15).
9. The device for layering, compacting and detecting according to claim 8, characterized in that, The lower end of the sliding disc (18) is fixed with a connecting rod (19), which is slidably connected to the second bracket (12). The second bracket (12) is fixed on the protective plate (2). The connecting rod (19) is provided with a second scale line (20), and the lower end of the connecting rod (19) is fixed with a ground support plate (21).
10. The integrated equipment for layered compaction and testing of trench backfilling according to claim 9, characterized in that, The lower end of the fixed plate (14) is fixed with a support rod (23), and the sliding plate (18) and the connecting rod (19) are slidably connected to the support rod (23).
Citation Information
Patent Citations
Pipeline groove compacting device
CN222375365U