Civil engineering pile foundation drill bit

Abstract

The utility model discloses a civil engineering pile foundation drill bit includes: the drill cylinder, the drill cylinder is equipped with a plurality of intercepting piece that distributes along the drill cylinder inner wall circumference, every intercepting piece includes: steel wire rope, is welded on the rotary drum inner wall, and the length is greater than the radius of drill cylinder, the pier head clamp is installed in the steel wire rope far from the rotary drum inner wall one end, and the steel wire rope appears silk phenomenon through the design pier head clamp, is avoided. The utility model discloses through the inner wall design blocking piece of drill cylinder, when encountering boulder, in the process of drilling cylinder in-depth, boulder will be cut or extruded displacement by drill tooth, and extruded steel wire rope enters into the drill cylinder, when the drill cylinder is filled, and the drill cylinder is proposed, through the steel wire rope, makes boulder fall out of the drill cylinder, and then completes the boulder's taking out work, compared with traditional GPS-10 engineering drilling machine, can handle the situation that cannot continue to drill in the construction process and encounter boulder or boulder, compared with rotary drilling machine, can save the cost, and is convenient and fast.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically a drill bit for civil engineering pile foundations. Background Technology

[0002] Pile foundation drill bits are key components in engineering drilling rig construction, used to break up soil layers and form pile holes;

[0003] When traditional pile foundation drill bits encounter boulders or boulder layers during deep drilling, they cannot continue drilling. In this case, the pile foundation drill bit needs to be pulled out, and workers or tools need to retrieve the boulders from the hole before drilling can continue. However, some boulders are still buried underground, while others are exposed. This retrieval method can only retrieve the exposed parts, which is not convenient. Utility Model Content

[0004] Purpose of the utility model: To provide a drill bit for pile foundation engineering in civil engineering to solve the above-mentioned problems existing in the prior art.

[0005] Technical solution: A drill bit for civil engineering pile foundations, comprising:

[0006] Drill barrel;

[0007] The drill barrel is provided with a plurality of interceptors distributed circumferentially along the inner wall of the drill barrel, each interceptor comprising:

[0008] The steel wire rope is welded to the inner wall of the drill barrel and its length is greater than the radius of the drill barrel.

[0009] The head clamp is installed at the end of the wire rope away from the inner wall of the drill barrel. By designing the head clamp, the wire rope is prevented from fraying.

[0010] Multiple interceptor components form an interception net to block isolated rocks from entering the drill tube and prevent them from falling out of the drill tube.

[0011] This invention designs a blocking component on the inner wall of the drill barrel. When encountering a boulder, the boulder will be cut or displaced by the drill teeth during the drilling process, and the steel wire rope will be squeezed into the drill barrel. When the drill barrel is filled, the drill barrel is pulled out, and the boulder is dropped out of the drill barrel by moving the steel wire rope, thus completing the boulder removal work.

[0012] Compared with traditional GPS-10 engineering drilling rigs, it can handle situations where drilling cannot continue due to isolated rocks or boulders encountered during construction. Compared with rotary drilling rigs, it can save costs and is more convenient and faster.

[0013] In a further embodiment, one end of the drill barrel is open, and the interceptor is located near the open end of the drill barrel.

[0014] In a further embodiment, the drill barrel has multiple drill teeth welded to the outer wall of one open end, and the drill teeth are high-hardness alloy teeth.

[0015] In a further embodiment, a connecting post is installed at the end of the drill barrel away from the opening.

[0016] In a further embodiment, the connecting column has a groove extending into the drill barrel.

[0017] In a further embodiment, an auxiliary plate is adapted inside the drill barrel, and an auxiliary column adapted to the column groove is installed on the auxiliary plate;

[0018] When the auxiliary plate is close to the interceptor, the auxiliary column does not detach from the column groove. When the auxiliary plate is close to the end of the drill barrel away from the opening, the auxiliary column does not expose the column groove. The best approach is that the connecting column, the barrel wall, and the auxiliary column have the same length.

[0019] Beneficial effects: This utility model discloses a drill bit for civil engineering pile foundations. By designing a blocking component on the inner wall of the drill barrel, when encountering strata such as clay and sand, it will encounter boulders or erratics. During the drilling process, the boulders or erratics will be cut or displaced by the drill teeth and squeeze the wire rope into the drill barrel. When the drill barrel is filled, the drill barrel is pulled out, and the boulders are dropped out of the drill barrel by moving the wire rope, thus completing the removal of the boulders.

[0020] Compared with traditional GPS-10 engineering drilling rigs, it can handle situations where drilling cannot continue due to isolated rocks or boulders encountered during construction. Compared with rotary drilling rigs, it can save costs and is more convenient and faster. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0023] Figure 3 This is a schematic diagram of the interceptor structure of this utility model.

[0024] The attached figures are labeled as follows:

[0025] 1. Drill barrel; 2. Connecting column; 21. Column groove; 3. Interceptor; 31. Wire rope; 32. Head clamp; 4. Drill teeth; 51. Auxiliary column; 52. Auxiliary plate. Detailed Implementation

[0026] This application relates to a drill bit for pile foundations in civil engineering, which will be explained in detail below through specific embodiments.

[0027] A drilling bit for civil engineering pile foundations, comprising:

[0028] Drill barrel;

[0029] The drill barrel is provided with a plurality of interceptors distributed circumferentially along the inner wall of the drill barrel, each interceptor comprising:

[0030] The steel wire rope is welded to the inner wall of the drill barrel and its length is greater than the radius of the drill barrel.

[0031] The head clamp is installed at the end of the wire rope away from the inner wall of the drill barrel. By designing the head clamp, the wire rope is prevented from fraying.

[0032] Multiple interceptor components form an interception net to block boulders from entering the drill pipe and prevent them from falling.

[0033] This invention designs a blocking component on the inner wall of the drill barrel. When encountering a boulder, the boulder will be cut or displaced by the drill teeth during the drilling process, and the steel wire rope will be squeezed into the drill barrel. When the drill barrel is filled, the drill barrel is pulled out, and the boulder is dropped out of the drill barrel by moving the steel wire rope, thus completing the removal of the boulder.

[0034] Compared with traditional GPS-10 engineering drilling rigs, it can handle situations where drilling cannot continue due to isolated rocks or boulders encountered during construction. Compared with rotary drilling rigs, it can save costs and is more convenient and faster.

[0035] One end of the drill barrel is open, and the interceptor is located near the drill barrel with one open end.

[0036] The drill barrel is open-shaped with multiple drill teeth welded to the outer wall of one end. The drill teeth are high-hardness alloy teeth.

[0037] A connecting column is installed at the end of the drill barrel away from the opening.

[0038] The connecting column has a groove extending into the drill barrel.

[0039] An auxiliary plate is fitted inside the drill barrel, and an auxiliary column adapted to the column groove is installed on the auxiliary plate.

[0040] When the auxiliary plate is close to the interceptor, the auxiliary column does not detach from the column groove. When the auxiliary plate is close to the end of the drill barrel away from the opening, the auxiliary column does not expose the column groove. The best approach is that the connecting column, the barrel wall, and the auxiliary column have the same length.

[0041] After the auxiliary plate is designed, when entering the boulder, the boulder will squeeze the auxiliary plate, causing the auxiliary plate to rise until the drill barrel is completely filled with boulder and soil.

[0042] When the boulder cannot fall, the drill bit can be removed, the connecting column can be separated from the drilling rig, and then the auxiliary column can be supported by a rod to drive the auxiliary plate down, squeezing the boulder and forcing it to break free of the wire rope, thus completing the removal of the boulder. During this process, the drill bit can be placed on the frame to ensure that there are no obstructions below the drill barrel, preventing the boulder from falling and being hindered. At the same time, the auxiliary column can be lowered by auxiliary machinery, such as a hydraulic cylinder or other actuator, which can be used to support the rod and drive the auxiliary column down.

[0043] Taking a drill barrel with a diameter of 800 mm as an example, the bottom of the drill barrel is welded with 6 high-hardness alloy teeth with a height of 150 mm. The steel wire rope welded to the inner wall of the drill barrel has a diameter of 25 mm and a length of the steel wire rope is the drill barrel radius + 50 mm. The end of the steel wire rope is locked with a head clamp.

[0044] Working principle description: When encountering a boulder during conventional drilling, switch to the drill bit specified in this application and continue drilling. The boulder and soil will enter the drill barrel. The steel wire rope at the bottom of the drill barrel will completely block the boulder inside the drill barrel during drilling. Then, lift the drill barrel out of the ground, remove the boulder, and repeat the process of drilling → removing the boulder → lifting → cleaning → drilling until the boulder in the pile position is completely removed. Then, switch to a conventional drill bit and continue drilling downwards.

[0045] When clearing out isolated rocks, employees can use sticks to pry open the steel cable, causing the rocks to fall.

[0046] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and all such equivalent transformations fall within the protection scope of the present invention.

Claims

1. A drill bit for civil engineering pile foundations, comprising: Drill barrel; The feature is that the drill barrel is provided with a plurality of interceptors distributed circumferentially along the inner wall of the drill barrel, each interceptor comprising: The steel wire rope is welded to the inner wall of the drill barrel, and its length is greater than the radius of the inner wall of the drill barrel; A head clamp is installed at the end of the wire rope away from the inner wall of the drill barrel; Multiple interceptors form an interception network; One end of the drill barrel is open, and the interceptor is located near the drill barrel with one open end; The drill barrel is open-shaped with multiple drill teeth welded to the outer wall of one end; A connecting column is installed at the end of the drill barrel away from the opening. The connecting column has a groove extending into the drill barrel; An auxiliary plate is fitted inside the drill barrel, and an auxiliary column adapted to the column groove is installed on the auxiliary plate.

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