Device and method for backfilling and compacting holes after shoring is removed

Abstract

The present invention discloses an apparatus for backfilling and compacting a hole after a support is withdrawn, the apparatus comprising: a horizontal bracket; and a slide plate slidably attached to the horizontal bracket, the bottom of the slide plate being connected to a motor, the motor being drivingly connected to a helical drill rod, the helical drill rod being provided with a continuous helical blade; and a method for backfilling and compacting a hole after a support is withdrawn, the method comprising: inserting the helical drill rod into the hole and feeding backfill material into the hole until the backfill material appears at the opening of the hole and stops descending; driving and rotating the helical drill rod so that the helical blade presses the backfill material downward; when the top surface of the backfill material descends, continuing to feed backfill material into the hole until the top surface of the backfill material stops descending, and the helical drill rod rising to the outside of the hole by a reaction force. The present invention achieves the purpose of compacting the backfill material in the hole after the spiral drill rod rotates in the reverse direction by using the drilling device in the reverse direction, and has the characteristics of high backfilling efficiency, high compaction degree, and strong flexibility in backfilling construction for backfilling the hole.

Description

[Technical field]

[0001] The present invention belongs to the technical field of municipal engineering, and in particular to an apparatus and method for backfilling and compacting a hole after shoring is removed. [Background technology]

[0002] At present, in the construction process of new construction, renovation, repair and other works of municipal administrative networks, conditions for digging trenches while maintaining an appropriate excavation gradient are not met, so shaped steel piles (including steel pipe piles, channel steel piles, etc.) are often used as supports. According to the support requirements, the trenches can be backfilled to the designed elevation and then the supports can be pulled out. However, the hole left after the supports are pulled out has a small space, so backfilling and compaction cannot be done with ordinary compaction machines. Furthermore, if the hole is not backfilled and compacted, it will have a certain impact on the compaction degree of the entire backfilling and compaction area around the roadbed foundation and pipelines. Therefore, it is necessary to research new backfilling and compaction devices to solve the problem that the backfilling and compaction effect of small hole diameters is poor at present. Summary of the Invention [Problem to be solved by the invention]

[0003] The present invention aims to propose an apparatus and method for backfilling and compacting holes after the shoring is removed, in response to the shortcomings of the prior art. According to the present invention, holes can be backfilled efficiently after the shoring is removed, and the problem of poor backfilling and compaction of holes with small diameters can be solved. [Means for solving the problem]

[0004] In a first aspect of the present invention, a step S1 of inserting a helical drill rod into a hole, causing the helical drill rod to reach the bottom of the hole, and feeding backfill material into the hole until the backfill material appears at the opening of the hole and the top surface of the backfill material does not drop; Step S2: driving the helical drill rod to rotate so that the helical blade presses the backfill material downward, and as the backfill material is compacted at the bottom of the hole, the helical drill rod slowly rises and the top surface of the backfill material drops; and step S3, in which, when the top surface of the backfilling material descends, the backfilling material is continued to be poured into the hole until the top surface of the backfilling material no longer descends, and the helical drill rod is raised to the outside of the hole by a reaction force. To provide a method for backfilling and compacting a hole after pulling out a support.

[0005] Preferably, in steps S2-S3, a downward force is applied to the helical drill rod, and both the magnitude and direction of the force are constant.

[0006] Preferably, the force is provided by a counterweight block or a counterweight packet.

[0007] Preferably, in step S1, the difference between the diameter of the hole and the diameter of the spiral drill rod is within 10 mm, and when the diameter of the hole is d, the aggregate in the backfill material includes 10%-20% coarse aggregate with a particle size of 0.1d-0.25d, 50%-55% medium aggregate with a particle size of 0.05d-0.1d, and 25%-40% fine aggregate with a particle size not larger than 0.05d.

[0008] Preferably, each time backfilling material is poured into the hole in step S1, firstly, coarse aggregate with a particle size of 0.1d-0.25d and medium aggregate with a particle size of 0.05d-0.1d are mixed uniformly, the mixed aggregate is poured into the hole, and finally, fine aggregate with a particle size not larger than 0.05d is poured into the hole.

[0009] In a second aspect of the present invention, a horizontal bracket; and a slide plate slidably and horizontally attached to the horizontal bracket; a bottom of the slide plate connected to a motor, the motor drivingly connected to a helical drill rod, the helical drill rod being provided with a continuous helical blade; To provide a device for backfilling and compacting a hole after a support is removed.

[0010] Preferably, a counterweight packet or block is provided on top of the slide plate.

[0011] Preferably, the horizontal bracket includes four slide bars, the slide bars are connected to each other, the bottoms of the slide bars are connected to a fixed base, slide bushes are fixedly connected to edges of the slide plate, and the slide bushes are slidably connected to the slide bars. Effect of the Invention

[0012] Compared with the prior art, the present invention has the following beneficial effects: In the device and method for backfilling and compacting a hole after the shoring is pulled out provided by the present invention, based on the characteristic that a large backfilling device cannot be applied to the hole after the shoring is pulled out, the drilling device is used in the reverse direction to achieve the purpose of compacting the backfilling material in the hole after the spiral drill rod rotates in the reverse direction, and the backfilling efficiency of the hole is high, the compaction degree is high, and the flexibility of the backfilling work is strong. [Brief description of the drawings]

[0013] [Figure 1] FIG. 2 is a schematic diagram of a state before compaction in one embodiment of the present invention. [Diagram 2] FIG. 2 is a schematic diagram of a state after compaction in one embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] In the following, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and are not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without any creative efforts shall fall within the protection scope of the present invention.

[0015] Referring to Figures 1 and 2, as a preferred embodiment of the present invention, this embodiment provides an apparatus for backfilling and compacting a hole after the support is removed, comprising a horizontal bracket 1, a slide plate 2 slidably and horizontally attached to the horizontal bracket 1, the bottom of the slide plate 2 is connected to a motor 3, the motor 3 is drivably connected to a helical drill rod 4, and the helical drill rod 4 is provided with a continuous helical blade 5.

[0016] In the above embodiment, the horizontal bracket 1 includes four slide bars 6, the slide bars 6 are connected to each other via connecting rods 7, the bottoms of the slide bars 6 are connected to a fixed base 8, slide bushes 9 are fixedly connected to the edges of the slide plate 2, and the slide bushes 9 are slidably connected to the slide bars 6.

[0017] In some preferred embodiments, a counterweight 10, such as a counterweight packet or block, is provided on top of the slide plate 2 to provide downward pressure to improve compaction of the backfill material.

[0018] In another preferred embodiment of the present invention, Step S1: inserting a helical drill rod 4 into a hole a, and as shown in FIG. 1, driving the helical drill rod 4 to the bottom of the hole a, and feeding backfill material into the hole a until the backfill material appears at the opening of the hole and the top surface of the backfill material does not drop; Step S2: using the motor 3 to drive and rotate the helical drill rod 4 so that its helical blade 5 presses the backfill material downward, and as the backfill material is compacted at the bottom of the hole, the helical drill rod 4 slowly rises and the top surface of the backfill material drops; Step S3: when the top surface of the backfilling material descends, the backfilling material is continuously poured into the hole until the top surface of the backfilling material does not descend, and the helical drill rod rises to the outside of the hole by a reaction force; To provide a method for backfilling and compacting a hole after removing a support structure including the above-mentioned, Through this process, compacted area b is formed, as shown in Figure 2.

[0019] In a preferred embodiment, in steps S2-S3, a downward force is applied to the helical drill rod, the force having a constant magnitude and direction. Preferably, the force is provided by a counterweight block or a counterweight packet.

[0020] In a preferred embodiment, in step S1, the difference between the diameter of the hole and the diameter of the spiral drill rod is within 10 mm, and when the diameter of the hole is d, the aggregates in the backfill material include 10%-20% coarse aggregate with a particle size of 0.1d-0.25d, 50%-55% medium aggregate with a particle size of 0.05d-0.1d, and 25%-40% fine aggregate with a particle size not larger than 0.05d.

[0021] In a preferred embodiment, each time backfill material is poured into the hole in step S1, firstly, coarse aggregate with a particle size of 0.1d-0.25d and medium aggregate with a particle size of 0.05d-0.1d are mixed uniformly, the mixed aggregate is poured into the hole, and finally, fine aggregate with a particle size not larger than 0.05d is poured into the hole.

[0022] Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention, and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or equivalently substituted without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be included in the scope of the claims of the present invention. [Explanation of symbols]

[0023] 1 Horizontal bracket 2 Slide Plate 3 Motor 4. Spiral Drill Rod 5 Spiral Blade 6 Slide bar 7 Connecting rod 8 Fixed base 9 Slide bush 10 Counterweight A hole b Compaction area

Claims

1. Step S1: inserting a helical drill rod into a hole, causing the helical drill rod to reach the bottom of the hole, and feeding backfill material into the hole until the backfill material appears at the opening of the hole and the top surface of the backfill material does not drop; Step S2: driving and rotating the helical drill rod so that the helical blade presses the backfill material downward, and as the backfill material is compacted at the bottom of the hole, the helical drill rod slowly rises and the top surface of the backfill material drops; Step S3: when the top surface of the backfilling material descends, the backfilling material is continuously poured into the hole until the top surface of the backfilling material does not descend, and the spiral drill rod rises to the outside of the hole by a reaction force; A method for backfilling and compacting a hole after the shoring is removed, comprising:

2. The method for backfilling and compacting a hole after the support is pulled out as described in claim 1, characterized in that in steps S2-S3, a downward force is applied to the spiral drill rod, and the magnitude and direction of the force are both constant.

3. The method for backfilling and compacting a hole after the shoring is removed as claimed in claim 2, characterized in that the acting force is provided by a counterweight block or a counterweight packet.

4. The method for backfilling and compacting a hole after the support is pulled out according to claim 1, characterized in that in step S1, the difference between the diameter of the hole and the diameter of the spiral drill rod is within 10 mm, and when the diameter of the hole is d, the aggregate in the backfilling material includes 10%-20% coarse aggregate with a particle size of 0.1d-0.25d, 50%-55% medium aggregate with a particle size of 0.05d-0.1d, and 25%-40% fine aggregate with a particle size not larger than 0.05d.

5. The method for backfilling and compacting a hole after the shoring is pulled out as described in claim 4, characterized in that in step S1, each time the backfilling material is poured into the hole, first, coarse aggregate with a particle size of 0.1d-0.25d and medium aggregate with a particle size of 0.05d-0.1d are uniformly mixed, the mixed aggregate is poured into the hole, and finally, fine aggregate with a particle size not larger than 0.05d is poured into the hole.

6. 1. An apparatus for backfilling and compacting a hole after a support is removed, comprising: a horizontal bracket; and a slide plate slidably and horizontally attached to the horizontal bracket, the bottom of the slide plate being connected to a motor, the motor being drivingly connected to a helical drill rod, the helical drill rod being provided with a continuous helical blade.

7. The apparatus for backfilling and compacting a hole after the support is removed as claimed in claim 4, characterized in that a counterweight packet or a counterweight block is provided on the top of the slide plate.

8. The device for backfilling and compacting a hole after the shoring is pulled out as described in claim 4, characterized in that the horizontal bracket includes four slide bars, the slide bars are connected to each other, the bottoms of the slide bars are connected to a fixed base, slide bushes are fixedly connected to the edges of the slide plates, and the slide bushes are slidably connected to the slide bars.

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