CN204941351U - A kind of pile foundation construction removes underground obstacle drill bit - Google Patents

Abstract

The utility model discloses a kind of pile foundation construction and remove underground obstacle drill bit, comprise the cylindrical drill body that one end open one end is closed, described drill body open at one end is provided with multiple drill bit along described drill body edge, is welded on drill body edge, and object meets the obstruction such as layer of sand, stone can creep into.Opening inner side is provided with separation net, and described drill body closes one end arranged outside drilling rod.The beneficial effects of the utility model are: reasonable in design, structure is simple, convenient making, carrying out making target drill for GPS type rig, for removing ultra-deep underground obstacle, adopting sleeve drill bit to pull underground obstacle out, solve the problem that ultra-deep underground obstacle is difficult to clear up, arrange and remove door and can remove the obstruction that drill bit cleans out easily, adopt this kind of mode, pile foundation can be reduced greatly and to remove obstacles operating expenses and save the duration.

Description

A drill bit for removing underground obstacles in pile foundation construction

technical field

The utility model belongs to the field of building construction tools, in particular to a drill bit for removing underground obstacles in pile foundation construction.

Background technique

Bored piles as foundation piles of high-rise buildings are widely used in pile foundation construction. During construction, especially in old city reconstruction or special strata, various underground obstacles are often encountered, which brings great difficulties to pile foundation pile formation. Big difficulty. In the past, underground obstacles were generally dealt with: manual removal or large-scale excavation method for overall removal, and then backfilling and compaction before construction operations or full-rotary drilling rigs. It has the following disadvantages: For large-scale underground obstacles in soft soil areas with large buried depths, not only the overall removal of large quantities of engineering, time-consuming, and high costs, but also the use of excavated excavation operations and groundwater immersion. Earthwork backfilling, such backfilling soil is fluid and plastic and difficult to compact, which increases the difficulty of subsequent construction and also affects the quality of piles. Using a full-rotary drilling rig to clear obstacles, the construction cost is too high.

Utility model content

In order to solve the above-mentioned deficiencies in the prior art, the purpose of this utility model is to provide a drill bit for pile foundation construction that is convenient for construction to remove underground obstacles.

The inventive idea of the utility model is as follows: the underground obstacle is fished out with the sleeve drill bit having the isolation net, and relatively large obstacles will enter the drill body through the isolation net, thereby being taken out and cleaned up.

A drill bit for removing underground obstacles in pile foundation construction is characterized in that it comprises a cylindrical drill body with one end open and one end closed, and a plurality of drill bits are arranged along the edge of the drill body at one end of the drill body opening, and the drill bits are 8- 12 diamond bits are welded on the edge of the drill body, the purpose is to drill into obstacles such as sand layers and stones. An isolation net is arranged inside the opening, and a drill pipe is arranged outside the closed end of the drill body. The drill body is a round tubular hollow section steel with an outer diameter of 610 mm and a wall thickness of 16 mm.

The cylinder wall of the drill body close to the closed end is provided with a clearing door that can be opened to the outside. The size of the clearing door is 40*30cm, and two leaves are symmetrically arranged. The round steel with a diameter of 20mm is used for fixing. Stones, stakes and other obstacles.

The isolation net is composed of two rows of round-strand steel wire ropes arranged alternately. Round-strand steel wire rope 8*37, diameter 50mm, 12 wire ropes in each row. The function is to use the flexible characteristics of the wire rope to place obstacles such as stones and wooden piles in the sleeve during the drilling process to ensure that the obstacles will not fall when the drill bit is lifted. go down.

A reinforcing rib is arranged between the closed end of the drill body and the drill rod. There are at least 3 pieces of reinforcing ribs. The reinforcing rib is a hot-rolled ribbed steel plate with a wall thickness of 16mm. The reinforcing rib plays a role of strengthening the connection between the drill pipe and the drill body.

The drill pipe is a steel pipe with a diameter of 89mm and a wall thickness of 6mm, which is connected with the drill pipe of the GPS drilling rig, and the connecting head is the same as the drill bit of the GPS drilling rig.

Through the test, the beneficial effect of the utility model is that the design is reasonable, the structure is simple, and it is convenient to manufacture. A special drill bit is made for the GPS type drilling rig to remove ultra-deep underground obstacles. For the problem that the ultra-deep underground obstacles are difficult to clear, setting the clearing door can easily clear the obstacles cleared by the drill bit. Using this method can greatly reduce the construction cost of pile foundation clearing and save the construction period.

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of the utility model.

Fig. 2 is a wireframe diagram of the utility model embodiment.

Wherein, reference signs are: 1. drill body; 2. drill bit; 3. isolation net; 4. drill pipe; 5. removal door; 6. reinforcing rib.

detailed description

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. Of course, the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Example 1

Referring to Fig. 1 and Fig. 2, the utility model is a drill bit for removing underground obstacles in pile foundation construction, a drill bit for removing underground obstacles in pile foundation construction, and is characterized in that it includes a cylindrical drill body 1 with one end open and one end closed. Body 1 opening one end is provided with a plurality of drill bits 2 along drill body 1 edge, and drill bit 2 is 8-12 diamond drill bits, is welded on drill body 1 edge, and purpose is to meet obstacles such as sand layer, stone and can get into. An isolation net 3 is arranged inside the opening, and a drill pipe 4 is arranged outside the closed end of the drill body 1 . The drill body 1 is a round tube hollow section steel with an outer diameter of 610 mm and a wall thickness of 16 mm.

The wall of the drill body 1 close to the closed end is provided with a clearing door 5 that can be opened to the outside. The size of the clearing door 5 is 40*30cm, and two leaves are arranged symmetrically. The round steel with a diameter of 20mm is used for fixing. Stones, stakes and other obstacles.

The isolation net 3 is made up of two rows of round strand steel wire ropes arranged alternately. Round-strand steel wire rope 8*37, diameter 50mm, 12 wire ropes in each row. The function is to use the flexible characteristics of the steel wire rope. fall down.

A reinforcing rib 6 is provided between the closed end of the drill body 1 and the drill rod 4 . Rib 6 is provided with 3 pieces, evenly distributed. The rib 6 is a hot-rolled ribbed steel plate with a wall thickness of 16 mm. The ribs 6 play a role in reinforcing the connection between the drill pipe and the drill body.

Drilling rod 4 is 89mm in diameter, and the 6mm steel pipe of wall thickness is connected with the GPS drilling rig drilling rod, and the connecting head is identical with the GPS drilling rig drill bit.

The undescribed technical features of the utility model can be realized by or using the prior art, so they will not be repeated here. Of course, the above description is not a limitation of the utility model, and the utility model is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary skilled persons within the essential scope of the present utility model shall also belong to the protection scope of the present utility model.

Claims (7)

1. A drill bit for removing underground obstacles in pile foundation construction, characterized in that it includes a cylindrical drill body (1) with one end open and one end closed, and the open end of the drill body (1) is arranged along the edge of the drill body (1) There are a plurality of drill bits (2), an isolation net (3) is arranged inside the opening, and a drill pipe (4) is arranged outside the closed end of the drill body (1). 2. The drill bit for removing underground obstacles in pile foundation construction according to claim 1, characterized in that, a removal door (5) that can be opened outward is provided on the cylinder wall of the drill body (1) near the closed end. 3. The drill bit for removing underground obstacles in pile foundation construction according to claim 1, characterized in that, the removal doors (5) are two oppositely positioned. 4. The drill bit for clearing underground obstacles in pile foundation construction according to claim 1, characterized in that, the isolation net (3) is composed of two rows of round-strand steel wire ropes arranged alternately. 5. The underground obstacle removal drill bit for pile foundation construction according to claim 1, characterized in that, a reinforcing rib (6) is provided between the closed end of the drill body (1) and the drill pipe (4). 6. The drill bit for clearing underground obstacles in pile foundation construction according to claim 5, characterized in that at least three reinforcement ribs (6) are provided. 7. The drill bit for clearing underground obstacles in pile foundation construction according to claim 1, characterized in that, the drill pipe (4) is connected to the GPS drilling rig, and the connecting head is the same as the GPS drilling rig bit.