Manual tamping equipment special for pipe ditch and using method

Abstract

The invention provides manual tamping equipment special for a pipe ditch and a using method, the manual tamping equipment comprises a frame, a hammer arm and an operating rod, the top end of the hammer arm is rotationally connected with the frame, and the bottom end of the hammer arm extends out of the frame to be rotationally connected with a tamping hammer; the operating rod is positioned above the frame, and one end of the operating rod is fixedly connected with the hammer arm; the frame comprises supporting legs and a frame top beam, the supporting legs are located below the frame top beam, and moving wheels are arranged at the bottom ends of the supporting legs; the frame top beam comprises a first main beam, a second main beam and a plurality of secondary beams connecting the first main beam and the second main beam, the first main beam and the second main beam are arranged in parallel, and the length of the secondary beams is adjustable. The method can reduce the labor intensity and improve the construction efficiency, guarantees the safety of the replacement construction process of the pipeline part in the pipeline complex area, and is wide in application range.

Description

Technical Field

[0001] This invention relates to the field of trench backfilling construction technology, and in particular to a special manual tamping device for trenches and its usage method. Background Technology

[0002] With the advancement of urbanization in my country, the aging of facilities in old residential areas has become increasingly prominent, with the aging and upgrading of urban gas transmission and distribution pipelines being particularly urgent. However, the underground renovation of such projects faces numerous difficulties, mainly in that: the underground pipelines in old urban areas are intricate and complex, and often lack complete underground pipeline data. Construction workers can only adopt a method of exploration and construction simultaneously, making difficult progress while ensuring that existing communication, water supply and drainage, and power and communication lines are not damaged. As a result, the final trench backfilling work is extremely difficult.

[0003] The regulations require that backfilling within 0.5 meters on both sides and above the pipeline must be done manually, and mechanical tampers are prohibited. This is because mechanical tampers are large and it is difficult to control the accuracy of the tamping position and force. When operating automatically, they can easily damage pipelines, and in serious cases, cause safety accidents (such as accidentally damaging gas pipelines and causing leaks). In addition, the backfilling of pipe trenches has high requirements for compaction and bearing capacity. Therefore, not only is manual backfilling necessary, but also layered backfilling and layered compaction are required. This means that in areas deeper than the ground, construction workers need to go down into the pipe trench with a tamping hammer to compact the material. This method of frequent back-and-forth work between the inside and outside of the pipe trench is inefficient and labor-intensive. Summary of the Invention

[0004] The purpose of this invention is to provide a manual tamping device and its usage method specifically for pipe trenches, thereby addressing the shortcomings in the aforementioned background technology.

[0005] The technical solution of this invention is: a manual tamping device specifically for pipe trenches, comprising:

[0006] Frame;

[0007] Hammer arm, the top end of which is rotatably connected to the frame, and the bottom end of which extends out of the frame and is rotatably connected to the tamping hammer;

[0008] An operating lever is located above the vehicle frame, with one end of it fixedly connected to the hammer arm.

[0009] Preferably, the frame includes support legs and a frame top beam, the support legs are located below the frame top beam and have movable wheels at their bottom ends; the frame top beam includes a first main beam, a second main beam and a plurality of secondary beams connecting the two, the first main beam and the second main beam are arranged in parallel, and the length of the secondary beams is adjustable.

[0010] Preferably, the secondary beam includes at least a first beam segment, a second beam segment, and a first movable sleeve. The disjointed ends of the first beam segment and the second beam segment are respectively connected to the first main beam and the second main beam, and the opposing ends are respectively slidably inserted into the first movable sleeve and fixed by a first limiting bolt extending radially along the first movable sleeve.

[0011] Preferably, the secondary beam includes a third beam segment, and the first movable sleeve is fixedly disposed at both ends of the third beam segment.

[0012] Preferably, the hammer arm includes at least a first hammer arm segment, a second hammer arm segment, and a second movable sleeve. The two ends of the first hammer arm segment are respectively connected to the second hammer arm segment and the second movable sleeve. The operating rod is located in the middle of the first hammer arm segment. The second hammer arm segment extends from the top end of the frame to the bottom end. The second movable sleeve is rotatably fitted onto the top beam of the frame.

[0013] Preferably, the second movable sleeve is perpendicular to the first hammer arm section.

[0014] Preferably, the hammer arm includes a third hammer arm segment extending in the same direction as the second hammer arm segment and a third movable sleeve. One of the second hammer arm segment and the third hammer arm segment is fixedly connected to the third movable sleeve, and the other is slidably inserted in the third movable sleeve and fixed by a second limiting bolt extending radially along the third movable sleeve.

[0015] Preferably, the hammer is provided with an exhaust hole and a mounting groove, the exhaust hole extending vertically through the hammer; the mounting groove is located at the top of the hammer and contains a connecting shaft for rotatably connecting the hammer arm, the connecting shaft extending laterally.

[0016] Preferably, the operating lever includes at least a first operating arm, a second operating arm, and a transmission arm. Two sets of transmission arms are symmetrically distributed on the outer side of the hammer arm, and their disjoint ends are respectively connected to the first operating arm and the second operating arm located on both sides of the frame.

[0017] The technical solution of the present invention also includes: a method for using the above-mentioned manual tamping equipment for pipe trenches, which includes the following steps:

[0018] Adjust the length of the secondary beam according to the width of the trench, and move the chassis above the trench;

[0019] Adjust the connection between the third movable sleeve and the second or third hammer arm section according to the trench depth.

[0020] Select and install a tamping hammer according to the size of the area to be tamped in the trench;

[0021] Raise the operating lever to a certain height so that the tamping hammer falls due to its own weight, and carry out the tamping construction of the trench backfill soil.

[0022] The beneficial effects of this invention are: (1) The hammer arm and tamping hammer are suspended outside the trench by the vehicle frame, and the hammer arm extends downward into the trench. The person only needs to stand on the ground to operate the operating rod to realize the tamping of the deeper soil in the trench. There is no need for the worker to frequently go back and forth between the inside and outside of the trench, which can reduce the labor intensity and improve the construction efficiency. Moreover, compared with mechanical tamping machines, this equipment is driven by manpower. Although the tamping hammer will fall due to its own weight, its downward trend can be resisted by manpower. When it is observed and predicted that the hammer impact point after the tamping hammer falls may cause danger, the worker can apply force to the operating rod at any time to stop the tamping hammer from falling. After correcting the position or replacing the tamping hammer with a suitable size, the construction can continue. This effectively ensures the safety of the pipeline replacement construction process in areas with complex pipelines.

[0023] (2) This equipment has a wide range of applications. The adjustable length of the secondary beam makes it suitable for backfilling and compaction of trenches of different widths. The long hammer arm makes it suitable for backfilling and compaction of trenches of different depths. The size and model of the hammer can also be selected and replaced according to the size of the area to be compacted. Attached Figure Description

[0024] Figure 1 This is a side view of an embodiment of the present invention;

[0025] Figure 2 This is a side view of the vehicle frame in an embodiment of the present invention;

[0026] Figure 3 This is a side view of the hammer arm in an embodiment of the present invention;

[0027] Figure 4 This is an appendix to the embodiments of the present invention. Figure 3 Enlarged view of the structure at point A in the middle;

[0028] Figure 5 This is a top view of an embodiment of the present invention;

[0029] Figure 6 This is a top view of the secondary beam in an embodiment of the present invention;

[0030] Figure 7 This is a side view of the tamping hammer in an embodiment of the present invention.

[0031] In the picture:

[0032] 1. Frame; 11. Support leg; 12. Transfer wheel; 13. First main beam; 14. Second main beam; 15. Secondary beam; 151. First beam segment; 152. Second beam segment; 153. First movable sleeve; 154. First limit bolt; 155. Third beam segment; 156. Threaded groove; 16. Scissor brace;

[0033] 2. Hammer arm; 21. First hammer arm section; 22. Second hammer arm section; 23. Second movable sleeve; 24. Third hammer arm section; 25. Third movable sleeve; 26. Second limit bolt; 27. Stiffening rib;

[0034] 3. Control lever; 31. First control arm; 32. Second control arm; 33. Transmission arm;

[0035] 4. Hammer; 41. Vent hole; 42. Mounting slot;

[0036] 5. Adapter shaft. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0038] In the description of the embodiments of this invention, it should be understood that the terms "top," "bottom," etc., indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the invention 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 the invention. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "set" and "connected" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention through specific circumstances.

[0039] Reference Appendix Figure 1-7 This invention provides a manual tamping device for pipe trenches, comprising: a frame 1, a hammer arm, and an operating rod 3. The frame 1 is mounted above the pipe trench. The top end of the hammer arm is rotatably connected to the frame 1, and the bottom end extends out of the frame 1 and is rotatably connected to a tamping hammer 4. The tamping hammer 4 is generally heavy and regularly shaped. When rotatably connected to the hammer arm, it can automatically adjust the levelness of its bottom surface to ensure efficient tamping of the soil. The operating rod 3 is located above the frame 1, and one end is fixedly connected to the hammer arm. The operating rod 3 can be lifted manually to raise the hammer arm and the tamping hammer 4. When the manual force is released, the tamping hammer 4 will fall due to its own weight, thereby compacting the soil and causing the hammer arm to return to its original position.

[0040] Using the above technical solution, a hammer arm and a tamping hammer 4 are suspended outside the trench via a vehicle frame 1. The hammer arm extends downward into the trench, and a person only needs to stand on the ground and operate the control lever 3 to carry out tamping work on deeper soil in the trench. This eliminates the need for workers to frequently travel back and forth between the inside and outside of the trench, reducing labor intensity and improving construction efficiency. Furthermore, compared to mechanical tamping machines, this equipment is manually driven. Although the tamping hammer 4 will fall due to its own weight, its downward trend can be countered by human intervention. When it is observed and predicted that the impact point of the tamping hammer 4 may cause danger, the worker can apply force to the control lever 3 at any time to stop the tamping hammer 4 from falling. After correcting the position or replacing it with a tamping hammer 4 of appropriate size, construction can continue. This effectively ensures the safety of the pipeline replacement construction process in areas with complex pipelines.

[0041] In this embodiment, the frame 1 includes support legs 11 and a frame top beam. The support legs 11 are located below the frame top beam and have movable wheels 12 at their bottom ends to facilitate moving the frame 1 along the length of the trench, gradually completing the soil compaction work at a certain level within the entire trench. The frame top beam includes a first main beam 13, a second main beam 14, and several secondary beams 15 connecting the two. The first main beam 13 and the second main beam 14 are arranged in parallel, and the secondary beams 15 are located between them and connected to form a mesh-like planar structure to ensure the structural stability of the frame top beam and to install the aforementioned structures. In implementation, the number of secondary beams 15 can be configured arbitrarily and is not limited here. Only one example is given: three secondary beams 15 can be arranged in parallel, with the middle one used to install the aforementioned hammer arm.

[0042] Considering that the trench excavation width varies in different construction environments, in order to make the frame 1 suitable for various construction environments and stably supported on the ground on both sides of the trench width, the secondary beam 15 is set as an adjustable length component in this embodiment.

[0043] Specifically, the secondary beam 15 includes at least a first beam segment 151, a second beam segment 152, and a first movable sleeve 153. The opposing ends of the first beam segment 151 and the second beam segment 152 are respectively connected to the first main beam 13 and the second main beam 14, while the opposing ends slide through the first movable sleeve 153 and are fixed by a first limiting bolt 154 extending radially along the first movable sleeve 153. By loosening the first limiting bolt 154 and sliding the first beam segment 151 and the second beam segment 152 along the first movable sleeve 153, their lengths extending into the first movable sleeve 153 can be changed, thereby altering the total length of the secondary beam 15 to accommodate different trench widths. After adjusting the total length of the secondary beam 15, the first limiting bolt 154 is then tightened.

[0044] In addition, a third beam segment 155 can be set in the secondary beam 15. The third beam segment 155 is positioned between the first beam segment 151 and the second beam segment 152. A set of first movable sleeves 153 are fixedly set at both ends. The first beam segment 151 and the second beam segment 152 are slidably inserted into different first movable sleeves 153.

[0045] To ensure the stability of the frame 1, scissor braces 16 can also be installed between the support legs 11 located on the same side outside the trench.

[0046] In this embodiment, the hammer arm 2 includes at least a first hammer arm section 21, a second hammer arm section 22, and a second movable sleeve 23. The first hammer arm section 21 is located above the top beam of the frame, perpendicular to the secondary beam 15 and extending obliquely upward. The two ends of the first hammer arm section 21 are respectively connected to the second hammer arm section 22 and the second movable sleeve 23. The second hammer arm section 22 extends from the top end of the frame 1 to the bottom end. The second movable sleeve 23 is perpendicular to the first hammer arm section 21 (i.e., parallel to the secondary beam 15) and rotatably fitted onto the secondary beam 15. The operating lever 3 is located in the middle of the first hammer arm section 21. When the operating lever 3 is raised, the first hammer arm section 21 can drive the second hammer arm section 22 to rise and drive the second movable sleeve 23 to rotate. When the force is withdrawn, under the action of the weight of the hammer 4, the first hammer arm section 21 and the second hammer arm section 22 descend, and the second movable sleeve 23 rotates in the opposite direction and resets.

[0047] In addition, the hammer arm 2 may also include a third hammer arm segment 24 extending in the same direction as the second hammer arm segment 22 and a third movable sleeve 25. One of the second hammer arm segment 22 and the third hammer arm segment 24 is fixedly connected to the third movable sleeve 25, and the other is slidably inserted into the third movable sleeve 25 and fixed by a second limiting bolt 26 extending radially along the third movable sleeve 25. Taking the second hammer arm segment 22 being fixedly connected to the third movable sleeve 25 and the third hammer arm segment 24 being slidably inserted into the third movable sleeve 25 as an example, when the second limiting bolt 26 is loosened, the total length of the second hammer arm segment 22, the third hammer arm segment 24, and the third movable sleeve 25 can be changed by sliding the third hammer arm segment 24 to adapt to different tamping depths. After the total length is adjusted, the second limiting bolt 26 can be locked.

[0048] This device can not only adapt to different tamping depths, but also ensure the effective implementation of tamping. Specifically, since soil compaction requires hammering force, and the surface height of the soil will decrease as it gradually becomes denser after compaction, it is necessary to place the tamping hammer 4 on the surface of the soil to be tamped before tamping, loosen the second limit bolt 26, raise the operating rod 3, so that the second hammer arm section 22 is away from the third hammer arm section 24, and the vertical distance between the top of the second hammer arm section 22 and the bottom of the third hammer arm section 24 is greater than the vertical distance between the top surface of the frame 1 and the surface of the soil to be tamped. Then, the second limit bolt 26 is locked. During the tamping process, when the operator raises the control lever 3 and releases the force, the tamping hammer 4 will continuously drive the hammer arm 2 to descend due to its own weight. Since initially, "the vertical distance between the top of the second hammer arm segment 22 and the bottom of the third hammer arm segment 24 is greater than the vertical distance between the top surface of the frame 1 and the surface of the soil to be tamped", when the tamping hammer 4 just touches the surface of the soil to be tamped, the second hammer arm segment 22 will not be hindered from moving downwards due to touching the frame 1. Instead, the hammer arm 2 and the tamping hammer 4 will stop moving downwards when the weight of the tamping hammer 4 can no longer satisfy its continued downward movement. This ensures that the tamping hammer 4 applies a certain hammering force to the soil to be tamped, and ensures that when the surface height of the soil to be tamped decreases due to gradual compaction, whether the tamping hammer 4 can continue to descend and continue hammering is determined by the force on the tamping hammer 4, and will not be interrupted due to the second hammer arm segment 22 touching the frame 1 and being hindered from moving downwards.

[0049] Reference Appendix Figure 3 To ensure the connection stability of the first hammer arm section 21 and the second hammer arm section 22, stiffening ribs 27 can be provided at the connection point to increase the connection area.

[0050] Both the first limiting bolt 154 and the second limiting bolt 26 mentioned above can be high-strength bolts commonly used in construction. Taking the first limiting bolt 154 as an example, its connection with the first beam segment 151 and the second beam segment 152 can be either abutment or threaded. The abutment method is advantageous because the device structure is simple, while the threaded method is advantageous because the connection is more stable. If the threaded method is adopted, several threaded grooves 156 can be provided on the side walls of the first beam segment 151 and the second beam segment 152. The several threaded grooves 156 are distributed along their axial direction, and each threaded groove 156 extends along its radial direction. The first limiting bolt 154 can be screwed into or out of the threaded groove 156 to change the connection state of the above structures. The connection methods not described in detail in this embodiment are all technologies well known to those skilled in the art. For example, the outer diameter of the first movable sleeve 153 can be larger than the diameter of the third beam segment 155. The second movable sleeve 23 can be first sleeved on the third beam segment 155, and then the first movable sleeve 153 can be welded and fixed. The axial end of the first movable sleeve 153 can be used to limit the second movable sleeve 23 and prevent it from sliding along its own axis.

[0051] In this embodiment, multiple sets of tamping hammers 4 can be configured as needed. The main difference between each set of tamping hammers 4 is the size of their cross-sections, which are used to adapt to the lateral dimensions of different areas to be compacted. For example, when tamping the soil on the side of the pipe, a tamping hammer 4 with a size that matches the distance between the trench sidewall and the pipe sidewall should be used to avoid the pipe and prevent accidental damage. Similarly, when tamping the soil above the pipe, a tamping hammer 4 with a size that matches the width of the trench can be used to improve construction efficiency. Furthermore, if there are other pipes near the newly installed pipe, a tamping hammer 4 with a size that matches the distance between the sidewalls of the two pipes can be used to avoid accidentally damaging any of the pipes.

[0052] Reference Appendix Figure 7 The tamping hammer 4 is provided with an exhaust hole 41 and a mounting groove 42. The exhaust hole 41 is provided in several groups, each group penetrating the tamping hammer 4 vertically, so that the air below the tamping hammer 4 can be smoothly discharged during tamping. The mounting groove 42 is located at the top of the tamping hammer 4, and is provided with a connecting shaft 5 for rotating and connecting the hammer arm 2. The connecting shaft 5 extends laterally to ensure the rotational freedom of the tamping hammer 4, so that when the tamping hammer 4 falls due to its own weight, it can automatically adjust the levelness of its bottom surface to ensure efficient tamping of the soil.

[0053] Reference Appendix Figure 5 The operating lever 3 includes at least a first operating arm 31, a second operating arm 32, and a transmission arm 33. Two sets of transmission arms 33 are symmetrically distributed on the outside of the hammer arm 2. The two sets of transmission arms 33 are respectively connected to the first operating arm 31 and the second operating arm 32 located on both sides of the frame 1. During construction, two people can stand on both sides of the trench and simultaneously lift the first operating arm 31 and the second operating arm 32 to reduce the labor intensity of a single person.

[0054] The method of using the above-mentioned manual tamping equipment for pipe trenches includes the following steps:

[0055] (1) Adjust the length of the secondary beam 15 according to the width of the trench, and move the frame 1 above the trench;

[0056] (2) Adjust the connection between the third movable sleeve 25 and the second hammer arm section 22 or the third hammer arm section 24 according to the trench depth;

[0057] (3) Select and install ramming hammer 4 according to the size of the area to be rammed in the trench;

[0058] (4) Raise the operating rod 3 to a certain height so that the hammer 4 falls due to its own weight and the trench backfill soil is compacted.

[0059] Compared with the prior art, the present invention has at least the following beneficial effects:

[0060] (1) The hammer arm 2 and the tamping hammer 4 are suspended outside the trench via the frame 1. The hammer arm 2 extends downward into the trench. The operator only needs to stand on the ground and operate the control lever 3 to carry out the tamping work on the deeper soil in the trench. The operator does not need to frequently travel back and forth between the inside and outside of the trench, which can reduce the labor intensity and improve the construction efficiency. Moreover, compared with mechanical tamping machines, this equipment is driven by manpower. Although the tamping hammer 4 will fall due to its own weight, its downward trend can be resisted by manpower. When it is observed and predicted that the hammer impact point after the tamping hammer 4 falls may cause danger, the operator can apply force to the control lever 3 at any time to stop the tamping hammer 4 from falling. After correcting the position or replacing the tamping hammer 4 with a suitable size, the construction can continue. This effectively ensures the safety of the pipeline replacement construction process in areas with complex pipelines.

[0061] (2) This equipment has a wide range of applications. The adjustable length of the secondary beam 15 makes this device suitable for backfilling and compaction of trenches of different widths. The hammer arm 2 of different lengths makes this device suitable for backfilling and compaction of trenches of different depths. The size and model of the hammer 4 can also be selected and replaced according to the size of the area to be compacted.

[0062] The above are preferred embodiments of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A manual tamping device specifically for pipe trenches, characterized in that, include: Frame; Hammer arm, the top end of which is rotatably connected to the frame, and the bottom end of which extends out of the frame and is rotatably connected to the tamping hammer; An operating lever is located above the vehicle frame, with one end of it fixedly connected to the hammer arm.

2. The manual tamping equipment for pipe trenches according to claim 1, characterized in that, The frame includes support legs and a frame top beam. The support legs are located below the frame top beam and have wheels at their bottom ends. The frame top beam includes a first main beam, a second main beam, and several secondary beams connecting the two. The first main beam and the second main beam are arranged in parallel, and the length of the secondary beams is adjustable.

3. The manual tamping equipment for pipe trenches according to claim 2, characterized in that, The secondary beam includes at least a first beam segment, a second beam segment, and a first movable sleeve. The opposite ends of the first beam segment and the second beam segment are respectively connected to the first main beam and the second main beam, and the opposite ends are respectively slidably inserted into the first movable sleeve and fixed by a first limiting bolt extending radially along the first movable sleeve.

4. The manual tamping equipment for pipe trenches according to claim 3, characterized in that, The secondary beam includes a third beam segment, and the first movable sleeve is fixedly disposed at both ends of the third beam segment.

5. The manual tamping equipment for pipe trenches according to any one of claims 2-4, characterized in that, The hammer arm includes at least a first hammer arm section, a second hammer arm section, and a second movable sleeve. The two ends of the first hammer arm section are respectively connected to the second hammer arm section and the second movable sleeve. The operating rod is located in the middle of the first hammer arm section. The second hammer arm section extends from the top end of the frame to the bottom end. The second movable sleeve is rotatably fitted onto the top beam of the frame.

6. The manual tamping equipment for pipe trenches according to claim 5, characterized in that, The second movable sleeve is perpendicular to the first hammer arm section.

7. The manual tamping equipment for pipe trenches according to claim 5, characterized in that, The hammer arm includes a third hammer arm segment extending in the same direction as the second hammer arm segment and a third movable sleeve. One of the second hammer arm segment and the third hammer arm segment is fixedly connected to the third movable sleeve, and the other is slidably inserted in the third movable sleeve and fixed by a second limiting bolt extending radially along the third movable sleeve.

8. The manual tamping equipment for pipe trenches according to any one of claims 6-7, characterized in that, The hammer is provided with an exhaust hole and a mounting groove. The exhaust hole extends vertically through the hammer. The mounting groove is located at the top of the hammer and contains a connecting shaft for rotatably connecting the hammer arm. The connecting shaft extends laterally.

9. The manual tamping equipment for pipe trenches according to claim 8, characterized in that, The operating lever includes at least a first operating arm, a second operating arm, and a transmission arm. Two sets of transmission arms are symmetrically distributed on the outer side of the hammer arm, and their opposite ends are respectively connected to the first operating arm and the second operating arm located on both sides of the frame.

10. The method of using the special manual tamping equipment for pipe trenches according to claim 9, characterized in that, Including the following steps: Adjust the length of the secondary beam according to the width of the trench, and move the chassis above the trench; Adjust the connection between the third movable sleeve and the second or third hammer arm section according to the trench depth. Select and install a tamping hammer according to the size of the area to be tamped in the trench; Raise the operating lever to a certain height so that the tamping hammer falls due to its own weight, and carry out the tamping construction of the trench backfill soil.

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