Plastic pipeline backfilling limiting device

Abstract

The utility model belongs to the field of pipeline construction, and particularly relates to a plastic pipeline backfilling and packaging limiting device which comprises a square pipe A and a square pipe B which are connected together in a sleeved mode, an adjusting hole A is formed in the square pipe A, and an adjusting hole B is formed in the square pipe B; through holes are formed in the upper surfaces of the outer sides of the square tube A and the square tube B, and drill rods vertically and downwards penetrate through the through holes; short square tubes are vertically welded on the lower surfaces of the outer sides of the square tube A and the square tube B; fastening threaded holes are formed in the outer end face of the square tube A and the outer end face of the square tube B. Fastening bolts are connected into the fastening threaded holes in a threaded mode. The device has a very good limiting effect on the pipeline at the initial stage of backfilling or encapsulating the plastic pipeline, effectively prevents the plastic pipeline from floating upwards or deviating leftwards and rightwards, is simpler and quicker to mount compared with an existing limiting device, can be quickly dismounted at the later stage, can be repeatedly used after being dismounted, is simple and efficient in construction, and saves construction materials.

Description

Technical Field

[0001] This utility model belongs to the field of pipeline construction, and in particular relates to a backfilling and sealing limiting device for plastic pipelines. Background Technology

[0002] Plastic pipes are a common piping material. Due to their lightweight nature, the lateral pressure exerted on the pipe during backfilling can cause it to move upwards. The same applies when plastic pipes are encased in concrete. This floating problem significantly shortens the lifespan of plastic pipes and seriously affects the operational efficiency and safety of facilities. Adding weight to the plastic pipes, such as by installing cement blocks or iron blocks, is a common method to prevent floating. Alternatively, specialized anchoring devices can be used to control the pipes' buoyancy. However, adding weight is unstable, prone to falling, and difficult to control lateral drift. Current anchoring devices are cumbersome to install, costly, and difficult to remove after backfilling or concrete pouring. Summary of the Invention

[0003] The problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a plastic pipe backfilling, sealing and limiting device.

[0004] This invention is achieved through the following technical solution:

[0005] A plastic pipe backfilling and sealing limiting device includes square tubes A and B sleeved together. Square tube B can slide left and right inside square tube A. An adjustment hole A is provided on square tube A, and an adjustment hole B is provided on square tube B. Square tubes A and B are fixed together by bolts A passing through adjustment holes A and B. Through holes are provided on the outer upper surface of both square tube A and square tube B, with a chisel rod passing vertically downward through each through hole. Short square tubes are vertically welded to the outer lower surface of both square tube A and square tube B, located inside the chisel rod. Fastening threaded holes are provided on the outer end faces of both square tube A and square tube B, communicating with the through holes, and fastening bolts are threaded into the fastening threaded holes.

[0006] Preferably, rubber pads are fixed inside the square tubes A and B on the inner side of the drill rod, and the rubber pads are in contact with the drill rod.

[0007] Preferably, the drill rod is a threaded steel drill rod.

[0008] Preferably, the square tube A has a side length of 3cm.

[0009] Preferably, the length of the short square tube is not greater than the radius of the plastic pipe.

[0010] Preferably, the fastening bolt is a slotted bolt or a wing bolt.

[0011] Preferably, the inner surface of the short square tube is provided with a rubber pad layer.

[0012] The device of this invention has a good limiting effect on the plastic pipe during the initial stage of backfilling or sealing, effectively preventing the plastic pipe from floating or shifting to the left or right. The device of this invention is simpler and faster to install than existing anchoring devices, and can also be quickly removed later. It can be reused after removal, making the construction not only simple and efficient, but also saving construction materials. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the construction state structure in this embodiment;

[0014] Figure 2 This is a schematic diagram of the overall structure of this embodiment;

[0015] Figure 3 This is a partially enlarged structural diagram of this embodiment;

[0016] Figure 4 This is a schematic diagram of the internal rubber pad structure in this embodiment.

[0017] In the diagram, 1 is square tube A, 2 is square tube B, 3 is adjusting hole A, 4 is adjusting hole B, 5 is bolt A, 6 is chisel, 7 is short square tube, 8 is fastening threaded hole, 9 is through hole, 10 is fastening bolt, and 11 is rubber pad. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments.

[0019] This embodiment includes square tubes A1 and B2 fitted together. Square tube A1 has a side length of 3cm, and square tube B2 has a side length slightly shorter than that of square tube A1. Square tube B2 can slide left and right within square tube A1 to adjust the total length of square tubes A1 and B2. An adjustment hole A3 is provided on square tube A1, and an adjustment hole B4 corresponding to adjustment hole A3 is provided on square tube B2. Square tubes A1 and B2 are fixedly connected together by bolts A5 passing through adjustment holes A3 and B4. Square tubes A1 and B2 are used to hold down the plastic pipe and prevent it from floating.

[0020] Through holes 9 are provided on the outer upper surface of square tube A1 and the outer upper surface of square tube B2. The outer side refers to the side away from the plastic pipe. The through holes 9 penetrate square tube A1 and square tube B2. A drill rod 6 passes vertically downward through the through holes 9. The diameter of the drill rod 6 is equal to the diameter of the through holes 9.

[0021] Short square tubes 7 are vertically welded downwards onto the lower outer surface of both square tube A1 and square tube B2. These short square tubes 7 are located inside the drill rod 6, and their length is no greater than the radius of the plastic pipe. The drill rod 6 is a threaded steel drill. The short square tubes 7 are used to press against the outer surfaces of the plastic pipe on both sides, preventing lateral displacement. To prevent damage to the plastic pipe, it is preferable that the inner surface of the short square tubes 7 has a rubber pad layer; the inner surface refers to the side facing the plastic pipe.

[0022] A transverse fastening threaded hole 8 is provided on the outer end face of both square tube A1 and square tube B2. The fastening threaded hole 8 communicates with the through hole 9, and a fastening bolt 10 is connected to the internal thread of the fastening threaded hole 8. The fastening bolt 10 can fix the drill rod 6 and prevent the drill rod 6 from moving up and down. For easy tightening, the fastening bolt 10 is preferably a slotted bolt or a wing bolt. Preferably, a rubber pad 11 is fixed inside the square tubes A1 and B2 on the inner side of the drill rod 6, as shown in the attached figure. Figure 4 As shown, the rubber pad 11 is fixed inside the square tubes A1 and B2. The rubber pad 11 is located on the opposite side of the fastening bolt 10. The rubber pad 11 can contact the drill rod 6. The rubber pad 11 is fixed to the inner wall of the square tube A1. The rubber pad 11 can be directly pasted inside the square tubes A1 and B2. In this way, the rubber pad 11 and the fastening bolt 10 together compress the drill rod 6, making the drill rod 6 more stable.

[0023] During construction, after the plastic pipe is installed using pipe supports, before backfilling or sealing, place the device above the plastic pipe. Adjust the lengths of square tubes A1 and B2 so that the short square tubes 7 on both sides clamp the outermost sides of the plastic pipe. Then, screw in bolts A5 to fix square tubes A1 and B2 together. Next, insert the chisel 6 into the through hole 9 and vertically tap the upper surface of the chisel 6 until it penetrates into the ground below the plastic pipe. Stop tapping when square tubes A1 and B2 press against the upper surface of the plastic pipe. Tighten the fastening bolts 10 to clamp the chisel 6, and then begin backfilling or pouring concrete for sealing. If backfilling with soil, the backfilling is done in two stages. After the first backfilling, the soil is below the short square tubes 7. After compaction, remove the device and continue with the second backfilling. If sealing with concrete, remove the device after the concrete has been poured and vibrated, but before the concrete has reached its full strength.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; those skilled in the art should understand that modifications can still be made to the technical solutions described in the above embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A backfilling and sealing limiting device for plastic pipes, characterized in that: The tube consists of two square tubes, A (1) and B (2), which are fitted together. The square tube B (2) can slide left and right inside the square tube A (1). An adjustment hole A (3) is provided on the square tube A (1), and an adjustment hole B (4) is provided on the square tube B (2). The square tubes A (1) and B (2) are fixed together by bolts A (5) passing through the adjustment holes A (3) and B (4). Through holes are provided on the outer upper surface of both the square tube A (1) and the square tube B (2). 9) The drill rod (6) is vertically passed through the through hole (9); short square tubes (7) are vertically welded on the outer lower surface of square tube A (1) and the outer lower surface of square tube B (2), and the short square tubes (7) are located inside the drill rod (6); fastening threaded holes (8) are provided on the outer end face of square tube A (1) and the outer end face of square tube B (2), and the fastening threaded holes (8) are connected to the through hole (9), and fastening bolts (10) are connected to the threaded fastening holes (8).

2. The plastic pipe backfilling and sealing limiting device according to claim 1, characterized in that: Rubber pads (11) are fixed inside the square tubes A (1) and B (2) on the inner side of the drill rod (6), and the rubber pads (11) are in contact with the drill rod (6).

3. The plastic pipe backfilling and sealing limiting device according to claim 1, characterized in that: The drill rod (6) is a threaded steel drill.

4. The plastic pipe backfilling and sealing limiting device according to claim 1, characterized in that: The square tube A (1) has a side length of 3cm.

5. The plastic pipe backfilling and sealing limiting device according to claim 1, characterized in that: The length of the short square tube (7) is not greater than the radius of the plastic pipe.

6. The plastic pipe backfilling and sealing limiting device according to claim 1, characterized in that: The fastening bolt (10) is a slotted bolt or a wing bolt.

7. The plastic pipe backfilling and sealing limiting device according to claim 1, characterized in that: The inner side of the short square tube (7) is provided with a rubber pad layer.

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