Pipeline haunch tamping tool

Abstract

The pipeline haunch tamping tool comprises a vertical pipe, and the lower end of the vertical pipe is provided with an arc-shaped bent section, so that the lower end opening of the vertical pipe faces a pipeline haunch; force transmission balls are arranged in the vertical pipe in the length direction of a pipe body, a bulldozing plate is arranged at a lower end opening of the vertical pipe, the rear end of the bulldozing plate is rotationally connected relative to the vertical pipe through a vertical rotating shaft, and the lower end opening of the vertical pipe corresponds to the outer side face of the bulldozing plate; the upper end opening of the vertical pipe is provided with a force application device for applying downward acting force to the upper force transmission ball, so that the lower force transmission ball pushes the bulldozing plate, and the device further comprises a moving device for controlling the vertical pipe to move in the pipeline laying direction. Through combination of the vertical pipe, the force transmission ball and the rotatable bulldozing plate, the axial acting force and vibration generated by the force application device are effectively transmitted to the haunch angle area, directional pushing and vibration tamping are carried out on backfill soil, and the compactness and stability of the haunch angle filling soil are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of pipeline construction technology, and in particular to a pipeline haunch compaction tool. Background Technology

[0002] Pipe axle angle refers to the angle between the pipe and the bottom of the trench. For some thicker pipes, the axle angle is large. When filling the trench, the backfill inside the axle angle is not in place or the soil is loose. It is also difficult to compact the soil at the axle angle during the subsequent ground compaction. Due to the narrowness of the trench, large compaction tools cannot be used. Therefore, before filling the trench, soil needs to be manually filled to the axle angle, and then the backfill soil at the axle angle is compacted with blunt tools or sticks. This is inefficient and costly. Summary of the Invention

[0003] To solve at least one of the above-mentioned technical problems, the present invention provides a pipe armpit compaction tool that can replace manual labor to conveniently fill and compact the backfill at the pipe armpit.

[0004] The technical solution adopted in this invention is to design a pipe axle compaction tool, which is used to compact the soil at the axle of a pipe. The tool is characterized by comprising a vertical pipe with an arc-shaped bend at its lower end, such that the lower end of the vertical pipe faces the pipe axle; force-transmitting balls are arranged along the length of the vertical pipe inside the pipe; a bulldozer plate is provided at the lower end of the vertical pipe, and the rear end of the bulldozer plate is rotatably connected to the vertical pipe via a vertical pivot; the lower end of the vertical pipe corresponds to the outer surface of the bulldozer plate; a force-applying device is provided at the upper end of the vertical pipe to apply a downward force to the upper force-transmitting balls, thereby causing the lower force-transmitting balls to push against the bulldozer plate; and a moving device is also included to control the movement of the vertical pipe along the pipe laying direction.

[0005] In some embodiments, the system includes a plurality of vertical pipes arranged side by side along the length of the pipe, with the distance from the lower end of each vertical pipe to the pipe increasing sequentially from back to front.

[0006] In some embodiments, the foremost vertical pipe is an empty pipe without the force transmission ball, the lower end of the empty pipe is located above the bulldozer blade and the pipe, and the upper end of the empty pipe is a soil supply port.

[0007] In some embodiments, the port faces of the lower ports of the vertical pipes are tilted forward, and the port faces of multiple lower ports of the vertical pipes are located on the same inclined plane.

[0008] In some embodiments, the force-applying device includes a telescopic rod and a vibrator located on the telescopic rod.

[0009] In some embodiments, a position detection sensor is provided on the vertical pipe to detect the height of the force transmission ball. When the detected height of the force transmission ball reaches a preset height, the force application device pushes the force transmission ball downward, causing the force transmission ball to descend.

[0010] In some embodiments, the mobile device includes wheels supporting the ground and / or the pipe, the wheels being connected to the vertical pipe via a lifting and translating mechanism.

[0011] In some embodiments, the vertical pipes are provided on both sides of the pipeline, and the traveling wheels include guide wheels located on both sides of the pipeline axis. The guide wheels on both sides are connected by a spacing adjustment mechanism, and the guide wheels are connected to the vertical pipes by a first lifting mechanism.

[0012] In some embodiments, the traveling wheels include power wheels located on both sides of the pipe for supporting the ground, and the power wheels are connected to the vertical pipe via a second lifting mechanism.

[0013] In some embodiments, the vertical pivot is mounted on a bracket, the bracket is fixedly connected to the vertical pipe, and the bottom of the bracket is provided with rollers to support the ground.

[0014] Compared with the prior art, the present invention has the following beneficial effects: This invention utilizes a combination of vertical pipes, force-transmitting balls, and rotatable bulldozer blades to effectively transfer the axial force and vibration generated by the force-applying device to the axle area, enabling directional pushing and vibratory compaction of the backfill soil, significantly improving the density and stability of the axle fill. The arrangement of front-end empty pipe soil supply and rear-end multi-stage vertical pipe progressive compaction achieves simultaneous backfilling and compaction, avoiding repetitive manual operations. The coordination between position detection sensors and the force-applying device ensures controllable bulldozer blade movement, guaranteeing consistent compaction results. The inclusion of traveling wheels, a lifting mechanism, and a spacing adjustment mechanism allows this invention to adapt to different pipe diameters, trench widths, and construction conditions, making it suitable for continuous operation in confined spaces. The compact and highly adaptable overall structure effectively reduces labor intensity and construction costs, and minimizes the risk of pipeline settlement due to inadequate backfilling at the axle. Attached Figure Description

[0015] The present invention will now be described in detail with reference to specific embodiments and accompanying drawings. To illustrate the details and facilitate understanding of its principles, the drawings are not necessarily to scale, and similar reference numerals may describe similar components in different views. The accompanying drawings generally illustrate the embodiments discussed herein by way of example and not limitation. Wherein: Figure 1 This is a rear view diagram of the tamping tool in operation according to the embodiment.

[0016] Figure 2This is a front view diagram of the compaction tool in operation according to the embodiment.

[0017] Figure 3 yes Figure 1 A schematic diagram of the AA section.

[0018] Figure 4 yes Figure 3 A schematic diagram showing the bulldozer blade being pressed down by the force transmission ball.

[0019] In the diagram, 1 is a pipe; 2 is a vertical pipe; 21 is the first vertical pipe; 22 is the second vertical pipe; 3 is a force transmission ball; 4 is a bulldozer blade; 5 is a vertical rotating shaft; 6 is an empty pipe; 61 is a soil supply port; 7 is a position detection sensor; 8 is a force application device; 81 is a telescopic rod; 82 is a vibrator; 9 is the second lifting mechanism; 10 is the second spacing adjustment mechanism; 11 is a power wheel; 12 is a guide wheel; 13 is a bracket; 14 is a roller; 15 is a spacing adjustment device; 16 is the first spacing adjustment mechanism; and 17 is the first lifting mechanism. Detailed Implementation

[0020] The following are specific embodiments of the present invention, and the technical solution of the present invention will be further described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments, and the following embodiments do not limit the invention covered by the claims. Furthermore, not all combinations of the features described in the embodiments are necessary for the inventive solution.

[0021] The principles and structure of the present invention will be described in detail below with reference to the accompanying drawings and embodiments. Example

[0022] like Figure 1 , 2 As shown in Figures 3 and 4, a pipe axle compaction tool is used to compact the soil at the axle of a pipe 1. The compaction tool includes a vertical pipe 2, i.e., a vertically arranged pipe body. The lower end of the vertical pipe 2 has an arc-shaped bend, so that the lower port of the vertical pipe 2 faces the axle of the pipe 1, making the lower port of the vertical pipe 2 approximately horizontal. Force transmission balls 3, such as iron balls, are arranged along the length of the pipe body inside the vertical pipe 2. A bulldozer plate 4 is provided at the lower port of the vertical pipe 2. The rear end of the bulldozer plate 4 is rotatably connected to the vertical pipe 2 via a vertical rotating shaft 5. The lower port of the vertical pipe 2 corresponds to the outer surface of the bulldozer plate 4. A force application device 8 is provided at the upper port of the vertical pipe 2 to apply a downward force to the upper force transmission balls 3, thereby causing the lower force transmission balls 3 to push against the bulldozer plate 4. The tool also includes a moving device for controlling the movement of the vertical pipe 2 along the laying direction of the pipe 1. The force application device 8 can be, for example, a pneumatic cylinder, hydraulic cylinder, electric cylinder, or other telescopic mechanism.

[0023] Keep the riser 2 vertical, with its lower curved section aligned with the axle area formed by the pipe 1 and the bottom of the trench. After the backfill soil is pre-filled or simultaneously placed into the axle area, a downward force is applied to the uppermost force-transmitting ball 3 inside the riser 2 via the force-applying device 8. This force is transmitted step by step along the force-transmitting balls 3 arranged sequentially inside the riser 2, causing the lower force-transmitting ball 3 to push against the bulldozer plate 4. Since the bulldozer plate 4 is rotatably connected to the riser 2 via the vertical shaft 5, under the pushing action of the force-transmitting balls 3, the bulldozer plate 4 can conform to the axle space to generate directional compression and compaction of the backfill soil, thereby effectively compacting the loose soil to the inside of the axle. By controlling the riser 2 to move continuously or intermittently along the axial direction of the pipe 1 through the moving device, the segmented compaction operation of the axle of the entire pipe 1 can be achieved. This invention has a compact structure and is suitable for construction in narrow trench spaces. It can replace manual blunt instrument compaction, significantly improve the compaction of the backfill at the axle corner and the construction efficiency, reduce labor intensity and construction costs, and reduce the risk of pipe bending or settlement caused by inadequate backfilling at the axle corner.

[0024] Multiple vertical pipes 2 are arranged side-by-side along the length of pipe 1. In this embodiment, two vertical pipes are used, and they are sequentially defined as the first vertical pipe 212 and the second vertical pipe 222 from back to front in the direction of movement of the moving device. The distance between the lower end of the first vertical pipe 212 and pipe 1 is greater than the distance between the lower end of the second vertical pipe 222 and pipe 1, so that the two vertical pipes 2 form a staggered relationship in the axle angle region. At the same time, the port faces of the lower ends of each vertical pipe 2 are all inclined forward, and the port faces of the lower ends of multiple vertical pipes 2 are located in the same inclined plane, so as to maintain as close contact as possible with the inclined bulldozer blade 4. As the mobile device moves the compaction tool along the direction of pipe 1, the force-transmitting ball 3 in the second vertical pipe 222, which is closer to pipe 1 at the front, first transmits force downward under the action of the force-applying device 8, pushing the corresponding bulldozer plate 4 to fill and initially compact the backfill soil at the axle corner. Subsequently, the force-transmitting ball 3 in the first vertical pipe 212, which is farther from pipe 1 at the rear, continues to apply top pressure to the backfill soil in the same area from front to back, achieving secondary compaction and compensating compaction. Through the coordination of the above structure and actions, the backfill soil at the axle corner is subjected to multi-level, progressive pushing and compaction during the tool's movement, significantly improving the density and uniformity of the backfill soil at the axle corner.

[0025] The forwardmost vertical pipe 2, located in the direction of movement, is an empty pipe 6 without the force transmission ball 3. Its lower end is positioned above the space between the bulldozer plate 4 and the pipe 1, and is used to introduce backfill soil into the axle area. The upper end of the empty pipe 6 forms a soil inlet 61, preferably a funnel-shaped open structure to increase the feeding area and facilitate manual feeding or cooperation with small conveying, shoveling, or other mechanical equipment to continuously feed backfill soil into the empty pipe 6. Under the action of gravity, the backfill soil falls along the empty pipe 6 and directly enters the space between the bulldozer plate 4 and the pipe 1. During the advancement of the compaction tool, it is guided and pushed by the bulldozer plate 4 to the inside of the axle of the pipe 1. Subsequently, the vertical pipe 2, located behind it, applies downward jacking pressure to the bulldozer plate 4 through the force transmission ball 3 to compact the soil already filled into the axle. By dividing the soil supply and compaction functions in the front and rear directions, the backfilling and compaction can be carried out continuously, avoiding the intermittent operation of repeated manual filling and compaction, improving the construction efficiency and compaction effect of haunch backfilling, and reducing the reliance on manual experience.

[0026] When the moving device drives the compaction tool forward, the bulldozer plate 4, under the obstruction of the backfill soil in front, tends to rotate relative to the vertical axis 5, causing the bulldozer plate 4 to rotate towards the lower end of the vertical pipe 2. This rotation creates a reverse pushing effect on the force transmission ball 3 inside the vertical pipe 2, causing the force transmission ball 3 to move upward along the vertical pipe 2. To achieve accurate control of this state, a position detection sensor 7 is installed on the vertical pipe 2 to detect the height of the force transmission ball 3, which is used to obtain the relative height of the force transmission ball 3 inside the vertical pipe 2 in real time. When the height of the force transmission ball 3 is detected to rise to a preset height threshold, it indicates that the bulldozer plate 4 has rotated to a position that abuts or is close to abutting the lower end of the vertical pipe 2, and further passive rotation in the direction of travel is limited. At this time, the force application device 8 applies a downward force to the force transmission ball 3, causing the force transmission ball 3 to move downward along the vertical pipe 2 and push the bulldozer plate 4 outward again, applying active compression and compaction to the backfill soil in the armhole. Through the above-mentioned reciprocating combination of "passive lifting - active pressing", the bulldozer plate 4 can automatically adjust its posture according to the resistance of the soil in front, and apply effective compaction force to the backfill soil at the axle corner at the appropriate time. This not only avoids the failure of operation caused by excessive rotation of the bulldozer plate 4, but also ensures that the compaction process is continuous and controllable, and improves the reliability and consistency of the axle corner compaction.

[0027] The position detection sensor 7 can be a photoelectric position sensor. For example, a detection hole or transparent window can be opened on the side wall of the vertical pipe 2, and a through-beam or reflective photoelectric sensor can be arranged at the corresponding height position. When the force transmission ball 3 rises to that height and blocks or reflects the light path, a trigger signal is output. Alternatively, a mechanical limit switch can be used. That is, a mechanical trigger limit switch can be set at a preset height position inside or outside the vertical pipe 2. When the force transmission ball 3 rises to that position and touches the limit member, a trigger signal is generated.

[0028] The force-applying device 8 includes a telescopic rod 81 and a vibrator 82 mounted on the telescopic rod 81. The telescopic rod 81 can be, for example, a pneumatic cylinder, a hydraulic cylinder, or an electric cylinder. The telescopic rod 81 is arranged axially along the vertical pipe 2, and its lower end abuts against the uppermost force-transmitting ball 3 inside the vertical pipe 2. It is used to extend or retract under driving action, thereby controlling the vibrator 82 to move up and down synchronously with the force-transmitting ball 3 and applying a controllable downward pushing force to the force-transmitting ball 3. The vibrator 82 generates periodic vibrations while the telescopic rod 81 pushes the force-transmitting ball 3. This vibration is transmitted step by step through the force-transmitting ball 3 to the bulldozer plate 4 at the lower end of the vertical pipe 2, so that the bulldozer plate 4 applies static compressive force to the backfill soil at the axle corner while superimposing high-frequency or low-frequency vibration. Through the combined action of vibration and compression, the frictional resistance between soil particles can be effectively reduced, promoting soil rearrangement and compaction, and improving the compaction effect of the backfill soil at the axle corner. This structure ensures that the vibrator 82 is always in an effective force transmission position, avoiding vibration attenuation caused by changes in the position of the force transmission ball 3. It also balances stroke control and compaction efficiency, making it suitable for compaction work at the axle of the pipeline 1 under different soil conditions.

[0029] The mobile device includes wheels for support on the ground and pipe 1. These wheels are connected to vertical pipes 2 via lifting and translation mechanisms to enable stable movement and position adjustment of the compaction tool within the trench. Vertical pipes 2 are symmetrically arranged on both sides of the axis of pipe 1, allowing compaction operations to be performed on the left and right axle areas of pipe 1 respectively, improving construction symmetry and overall efficiency. The wheels include guide wheels 12 supporting the pipe 1 on both sides of its axis. These guide wheels 12 roll along the length of pipe 1, defining the trajectory of the mobile device relative to pipe 1. The guide wheels 12 are connected by a first spacing adjustment mechanism 16, allowing adjustment of the spacing between guide wheels 12 according to different pipe diameters, ensuring the guide wheels 12 abut against the outer wall of pipe 1 and maintaining centering and stability during movement. The guide wheels 12 are connected to the corresponding vertical pipes 2 via a first lifting mechanism 17, which adjusts the height of the vertical pipe 2 relative to pipe 1 and the bottom of the trench to accommodate different burial depths and axle sizes. The above structure enables the compaction tool to move continuously along the axial direction of pipe 1, and maintains a stable relative position between the vertical pipe 2 and the axle area during movement, thus achieving continuous and efficient compaction of the backfill soil at the axle of pipe 1. Both the first spacing adjustment mechanism 16 and the first lifting mechanism 17 can be pneumatic cylinders, hydraulic cylinders, electric cylinders, etc.

[0030] A spacing adjustment device 15 is installed between the vertical pipes 2 located on both sides of the axis of the pipeline 1. The spacing adjustment device 15 is used to adjust the lateral spacing between the two vertical pipes 2 to adapt to construction conditions with different outer diameters of the pipeline 1 and different trench widths. The spacing adjustment device 15 can be, for example, a pneumatic cylinder, a hydraulic cylinder, an electric cylinder, etc.

[0031] The traveling wheels include power wheels 11 mounted on both sides of the pipe 1, used to support the ground and drive the compaction tool forward along the trench. The power wheels 11 are connected to the corresponding vertical pipe 2 via a second lifting mechanism 9. The second lifting mechanism 9 adjusts the height of the power wheels 11 relative to the vertical pipe 2 and the ground, thereby adapting to different ground elevations or trench depths and ensuring the stability of the compaction tool. A second spacing adjustment mechanism 10 is provided between the power wheels 11 located on both sides of the pipe 1. This second spacing adjustment mechanism 10 can be used to adjust the lateral spacing between the two power wheels 11 to adapt to different trench widths or pipe 1 laying spacing, ensuring that the power wheels 11 apply uniform support force to the ground or trench bottom during travel, thereby maintaining the overall balance and ensuring the correct positioning of the vertical pipe 2 and the bulldozer blade 4. Through the cooperation of the second lifting mechanism 9 and the second spacing adjustment mechanism 10 of the power wheels 11, the compaction tool of this invention can be flexibly adjusted under different construction site conditions, satisfying the adaptability to different pipe diameters and trench widths while ensuring the continuity and reliability of the haunch compaction operation. The second lifting mechanism 9 and the second spacing adjustment mechanism 10 can be pneumatic cylinders, hydraulic cylinders, electric cylinders, etc.

[0032] The vertical rotating shaft 5 is mounted on the bracket 13, which is fixedly connected to the vertical pipe 2. It supports the bulldozer blade 4 and bears the jacking force of the force transmission ball 3, ensuring the bulldozer blade 4 maintains a stable rotation center position during vertical rotation. The bottom of the bracket 13 is equipped with rollers 14 that support the ground, allowing the entire vertical pipe 2-bracket 13-buldozer blade 4 mechanism to move smoothly along the axis of the pipe 1 within the trench. This reduces frictional resistance to the ground, improving the flexibility and construction efficiency of the moving device. By fixing the vertical pipe 2 to the bracket 13 and cooperating with the bottom rollers 14, the vertical positioning of the vertical pipe 2 and the stability of the bulldozer blade 4's rotation are ensured.

[0033] The specific embodiments described herein are merely illustrative examples illustrating the spirit of the invention. Those skilled in the art can make various modifications or additions to the described embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A pipe haunch compaction tool, said compaction tool being used to compact the soil at the pipe haunch, characterized in that, The system includes a vertical pipe with an arc-shaped bend at its lower end, such that the lower end of the vertical pipe faces the pipe armpit angle; force-transmitting balls are arranged along the length of the pipe inside the vertical pipe; a bulldozer plate is provided at the lower end of the vertical pipe, and the rear end of the bulldozer plate is rotatably connected to the vertical pipe via a vertical pivot, with the lower end of the vertical pipe corresponding to the outer surface of the bulldozer plate; a force-applying device is provided at the upper end of the vertical pipe to apply a downward force to the upper force-transmitting balls, thereby causing the lower force-transmitting balls to push against the bulldozer plate; and a moving device for controlling the movement of the vertical pipe along the pipeline laying direction.

2. The pipe haunch compaction tool according to claim 1, characterized in that, It includes multiple vertical pipes arranged side by side along the length of the pipeline, with the distance from the lower end of each vertical pipe to the pipeline increasing sequentially from back to front.

3. The pipe haunch compaction tool according to claim 2, characterized in that, The foremost vertical pipe is an empty pipe without the force transmission ball. The lower end of the empty pipe is located above the bulldozer blade and the pipe, and the upper end of the empty pipe is the soil supply port.

4. The pipe haunch compaction tool according to claim 2, characterized in that, The port faces of the lower ports of the vertical pipes are inclined forward, and the port faces of multiple lower ports of the vertical pipes are located on the same inclined plane.

5. The pipe haunch compaction tool according to claim 1, characterized in that, The force-applying device includes a telescopic rod and a vibrator located on the telescopic rod.

6. The pipe haunch compaction tool according to claim 1, characterized in that, The vertical tube is equipped with a position detection sensor to detect the height of the force transmission ball. When the detected height of the force transmission ball reaches a preset height, the force application device pushes the force transmission ball downward, causing the force transmission ball to descend.

7. The pipe haunch compaction tool according to claim 1, characterized in that, The mobile device includes wheels that support the ground and / or the pipeline, and the wheels are connected to the vertical pipe via a lifting and translating mechanism.

8. The pipe haunch compaction tool according to claim 7, characterized in that, The vertical pipes are provided on both sides of the pipeline. The traveling wheels include guide wheels located on both sides of the pipeline axis. The guide wheels on both sides are connected by a spacing adjustment mechanism. The guide wheels are connected to the vertical pipes by a first lifting mechanism.

9. The pipe underarm compaction tool according to claim 8, characterized in that, The traveling wheels include power wheels located on both sides of the pipe for supporting the ground, and the power wheels are connected to the vertical pipe through a second lifting mechanism.

10. The pipe haunch compaction tool according to claim 1, characterized in that, The vertical pivot is mounted on the bracket, which is fixedly connected to the vertical tube. The bottom of the bracket is equipped with rollers that support the ground.

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