Double-layer steel casing rubble filling and distributing device

Abstract

The utility model provides a kind of double-layer steel casing broken stone filling distribution device, belong to the technical field of bridge pile foundation construction, including conical plate, connecting tendon, baffle ring;The diameter of the lower end of conical plate is greater than the diameter of inner layer steel casing, and less than the diameter of outer layer steel casing;Baffle ring is inclined to set, and the diameter of upper end is greater than the diameter of outer layer steel casing, the diameter of lower end is greater than the diameter of conical plate and less than the diameter of outer layer steel casing, and baffle ring is connected with conical plate by multiple connecting tendons.The above-mentioned device is convenient to operate, component processing, simple to use on site, accelerates backfilling process, improves efficiency, reduces waste, saves cost, lays distribution net between two adjacent connecting tendons, ensures that broken stone can pass through distribution net, and peripheral large-diameter soil blocks are blocked above distribution net.

Description

Technical Field

[0001] This utility model belongs to the technical field of bridge pile foundation construction, and specifically discloses a double-layer steel casing crushed stone filling and distributing device. Background Technology

[0002] As a common permanent structure in bridge engineering construction, pile foundations play a decisive role in the long-term service and durability of bridges. During bridge pile foundation construction, when geological conditions lead to strong karst caves, double-layer steel casings are often used in their treatment. An outer casing is installed above the top of the karst cave to prevent borehole collapse and subsequent ground subsidence when the pile foundation passes through it. An inner casing is installed after passing through the karst cave to ensure pile quality and control overfilling of the pile foundation within the karst cave. After installing the double-layer steel casings, the process typically involves backfilling the borehole to the top of the casings after pile foundation grouting, followed by backfilling the space between the double-layer steel casings with crushed stone using an excavator.

[0003] However, the following problems need to be addressed during the construction process: 1. Crushed stone is prone to scattering from both sides of the double-layer steel casing, which slows down the backfilling process, results in more waste, and increases costs accordingly; 2. The quality of crushed stone backfill is difficult to guarantee. During the backfilling process, large-diameter soil clods and other debris from the surrounding area are easily filled into the double-layer steel casing, causing blockage and affecting the backfilling speed and compaction. Utility Model Content

[0004] This utility model provides a double-layer steel casing crushed stone filling and distributing device, which solves at least one of the above technical problems.

[0005] The double-layer steel casing crushed stone filling and distributing device provided by this utility model includes a conical plate, connecting ribs, and a retaining ring; the lower diameter of the conical plate is larger than the diameter of the inner steel casing and smaller than the diameter of the outer steel casing; the retaining ring is inclined, with the upper diameter being larger than the diameter of the outer steel casing and the lower diameter being larger than the lower diameter of the conical plate and smaller than the diameter of the outer steel casing, and the retaining ring is connected to the conical plate by multiple connecting ribs.

[0006] The aforementioned double-layer steel casing crushed stone filling and distribution device also includes limiting ribs; the limiting ribs include inner limiting ribs and outer limiting ribs; both the inner and outer limiting ribs are parallel to the side wall of the steel casing, and their top ends are fixedly connected to the inner wall of the conical plate. The inner limiting rib is located on the inner side of the inner steel casing, and the outer limiting rib is located between the inner and outer steel casings.

[0007] In the aforementioned double-layer steel casing crushed stone filling and distribution device, multiple sets of limiting ribs are evenly arranged around the center of the conical plate.

[0008] The aforementioned double-layer steel casing crushed stone filling and distribution device also includes annular inner support I and annular inner support II fixed to the inner wall of the conical plate; annular inner support I is located at 1 / 3 of the conical plate, and annular inner support II is located at 2 / 3 of the conical plate.

[0009] In the above-mentioned double-layer steel casing crushed stone filling and distributing device, a lifting ring is fixed at the top of the conical plate.

[0010] In the above-mentioned double-layer steel casing crushed stone filling and distribution device, the angle between the retaining ring and the horizontal plane is 70°.

[0011] In the aforementioned double-layer steel casing crushed stone filling and distribution device, the lifting ring, conical plate, annular inner support I, annular inner support II, connecting ribs, retaining ring, inner limiting ribs and outer limiting ribs are all made of steel; the connecting ribs are made of 20mm round steel, and the weld length is not less than 200mm.

[0012] In the above-mentioned double-layer steel casing crushed stone filling and distribution device, a distribution mesh is laid between two adjacent connecting bars; the mesh size of the distribution mesh is larger than the size of the crushed stone and smaller than the size of the soil clods.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The above-mentioned device is easy to operate, the components are easy to process, and it is simple to use on site. After the karst pile foundation is poured and finally set, the device is placed on the top surface of the inner and outer steel casings. The excavator places the filling crushed stone at a uniform speed on the top of the conical plate. The crushed stone slides down the conical plate and is restricted from rushing out of the outer steel casing by the retaining ring. This allows the crushed stone to pass smoothly and quickly through the space between two adjacent connecting bars and enter the space between the inner and outer steel casings, which accelerates the backfilling process, improves efficiency, reduces waste, and saves costs. 2. Lay a material distribution net between two adjacent connecting bars to ensure that the crushed stone can pass through the material distribution net, while large-diameter soil clods around the net are blocked above the material distribution net. The net is removed regularly by an excavator to avoid blockage and ensure the compaction and filling quality of the backfill. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 Front view of the double-layer steel casing crushed stone filling and distribution device; Figure 2 A top view of a double-layer steel casing crushed stone filling and distribution device (without a distribution mesh); Figure 3 A top view of a double-layer steel casing crushed stone filling and distribution device (with a distribution net).

[0016] In the diagram: 1-Lifting ring; 2-Conical plate; 3-Annular inner support I; 4-Annular inner support II; 5-Connecting rib; 6-Stop ring; 7-Inner limiting rib; 8-Outer limiting rib; 9-Distribution mesh; 100-Original ground; 101-Inner steel casing; 102-Outer steel casing. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0018] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this utility model can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should fall within the scope of the technical content disclosed in this utility model. It should be noted that in this specification, relational terms such as "first" and "second" are only used to distinguish one entity from several other entities, and do not necessarily require or imply any actual relationship or order between these entities.

[0019] This embodiment provides a double-layer steel casing crushed stone filling and distributing device, including a conical plate 2, connecting ribs 5, and a retaining ring 6; the lower diameter of the conical plate 2 is larger than the diameter of the inner steel casing 101 and smaller than the diameter of the outer steel casing 102; the retaining ring 6 is inclined, with an upper diameter larger than the diameter of the outer steel casing 102 and a lower diameter larger than the lower diameter of the conical plate 2 and smaller than the diameter of the outer steel casing 102, and the retaining ring 6 is connected to the conical plate 2 by multiple connecting ribs 5.

[0020] The aforementioned double-layer steel casing crushed stone filling and distributing device also includes limiting ribs; the limiting ribs include an inner limiting rib 7 and an outer limiting rib 8; both the inner limiting rib 7 and the outer limiting rib 8 are parallel to the side wall of the steel casing, and their top ends are fixedly connected to the inner wall of the conical plate 2. The inner limiting rib 7 is located inside the inner steel casing 101, and the outer limiting rib 8 is located between the inner steel casing 101 and the outer steel casing 102.

[0021] In the above-mentioned double-layer steel casing crushed stone filling and distribution device, multiple sets of limiting ribs are evenly arranged around the center of the conical plate 2.

[0022] The aforementioned double-layer steel casing crushed stone filling and distribution device also includes annular inner support I3 and annular inner support II4 fixed to the inner wall of the conical plate 2; annular inner support I3 is located at 1 / 3 of the conical plate 2, and annular inner support II4 is located at 2 / 3 of the conical plate 2.

[0023] In the above-mentioned double-layer steel casing crushed stone filling and distributing device, the top of the conical plate 2 is fixed with a lifting ring 1 for hoisting.

[0024] In the above-mentioned double-layer steel casing crushed stone filling and distribution device, the angle between the retaining ring 6 and the horizontal plane is 70°.

[0025] In the above-mentioned double-layer steel casing crushed stone filling and distribution device, the lifting ring 1, conical plate 2, annular inner support I 3, annular inner support II 4, connecting rib 5, retaining ring 6, inner limiting rib 7 and outer limiting rib 8 are all made of steel; the connecting rib 5 is made of 20mm round steel and the weld length is not less than 200mm.

[0026] In this embodiment, there are 6 connecting ribs 5 along the circumference and 6 limiting ribs.

[0027] In the above-mentioned double-layer steel casing crushed stone filling and distribution device, a distribution mesh 9 is laid between two adjacent connecting bars 5; the mesh size of the distribution mesh 9 is larger than the size of the crushed stone and smaller than the size of the soil clods.

[0028] The working process of the above-mentioned device is as follows: After the karst pile foundation is poured and set, the device is placed on the top surface of the inner and outer steel casings. When the device is in place, the limiting reinforcement is placed on the inner and outer sides of the inner steel casing 101. The lower end of the conical plate 2 is placed between the inner steel casing 101 and the outer steel casing 102. The lower end of the retaining ring 6 is placed between the inner steel casing 101 and the outer steel casing 102, and the upper end of the retaining ring 6 is placed outside the outer steel casing 102. The excavator places the filling crushed stone evenly on the conical plate 2. The crushed stone slides down the conical plate 2. The retaining ring 6 restricts the crushed stone from rushing out of the outer steel casing 102, so that the crushed stone can pass smoothly and quickly through the space between the two adjacent connecting reinforcement bars 5 and enter the space between the inner steel casing 101 and the outer steel casing 102, which accelerates the backfilling process, improves efficiency, reduces waste, and saves costs. A material distribution net 9 is laid between two adjacent connecting bars 5 to ensure that the crushed stone can pass through the material distribution net 9, while large-diameter soil clods around it are blocked above the material distribution net 9. They are periodically removed by an excavator to avoid blockage and ensure the compaction and filling quality of the backfill.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A double-layer steel casing crushed stone filling and distributing device, characterized in that, Includes a conical plate (2), a connecting rib (5), and a retaining ring (6); The lower diameter of the conical plate (2) is larger than the diameter of the inner steel casing (101) and smaller than the diameter of the outer steel casing (102); The retaining ring (6) is inclined, with the upper diameter being larger than the diameter of the outer steel casing (102) and the lower diameter being larger than the lower diameter of the conical plate (2) and smaller than the diameter of the outer steel casing (102). The retaining ring (6) is connected to the conical plate (2) by multiple connecting ribs (5).

2. The double-layer steel casing crushed stone filling and distributing device according to claim 1, characterized in that, It also includes limiting reinforcement bars; The limiting ribs include inner limiting ribs (7) and outer limiting ribs (8); The inner limiting rib (7) and the outer limiting rib (8) are both parallel to the side wall of the steel casing, and their top ends are fixedly connected to the inner wall of the conical plate (2). The inner limiting rib (7) is located inside the inner steel casing (101), and the outer limiting rib (8) is located between the inner steel casing (101) and the outer steel casing (102).

3. The double-layer steel casing crushed stone filling and distributing device according to claim 2, characterized in that, Multiple sets of limiting ribs are evenly arranged around the center of the conical plate (2).

4. The double-layer steel casing crushed stone filling and distributing device according to claim 3, characterized in that, It also includes annular inner support I (3) and annular inner support II (4) fixed to the inner wall of the conical plate (2); The annular inner support I (3) is located at 1 / 3 of the conical plate (2), and the annular inner support II (4) is located at 2 / 3 of the conical plate (2).

5. The double-layer steel casing crushed stone filling and distributing device according to claim 4, characterized in that, A lifting ring (1) is fixed to the top of the conical plate (2).

6. The double-layer steel casing crushed stone filling and distributing device according to claim 1, characterized in that, The angle between the retaining ring (6) and the horizontal plane is 70°.

7. The double-layer steel casing crushed stone filling and distributing device according to claim 5, characterized in that, The lifting ring (1), conical plate (2), annular inner support I (3), annular inner support II (4), connecting rib (5), retaining ring (6), inner limiting rib (7) and outer limiting rib (8) are all made of steel. The connecting rib (5) is made of 20mm round steel, and the weld length is not less than 200mm.

8. The double-layer steel casing crushed stone filling and distributing device according to any one of claims 1-7, characterized in that, A material distribution mesh (9) is laid between two adjacent connecting bars (5); The mesh size of the material distribution mesh (9) is larger than the size of the crushed stone and smaller than the size of the soil clod.

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