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Cutting tooth with sawteeth for drill bit of pile driver

A cutting tooth and sawtooth technology, which is applied in the field of sawtooth cutting teeth for pile driver drill bits, can solve the problems of reduced cutting speed of sand and gravel, affecting the progress of construction, and reducing the pressure of sand and gravel layers.

Inactive Publication Date: 2016-02-03
天津市八方工程机械设备有限公司
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AI Technical Summary

Problems solved by technology

[0002] At present, in the field of pile foundation construction, when the pile driver encounters a relatively hard sand and gravel stratum, especially in dry hole construction, the front end of the cutting tooth is flat, so that the pressure on the sand and gravel layer per unit area is reduced, and the impact on the sand and gravel is reduced. The cutting speed is reduced, which affects the progress of construction

Method used

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  • Cutting tooth with sawteeth for drill bit of pile driver

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Embodiment Construction

[0007] The present invention will be further described in detail below through the specific examples, the following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention with this.

[0008] During construction, the machine drill bit is installed on the drill bit with sawtooth cutting teeth. Since the cutting teeth are provided with a guide plate 1, it is easy to assemble in place along the cavity 5, and the pin is inserted into the pin hole 2 for positioning. The waist trapezoidal sawtooth 4 is in contact with the sandstone layer at a certain angle. Under the pressure and rotation of the pile driver, the continuous cutting of the sandstone layer is realized. The sawtooth part of alloy cast steel is hard and wear-resistant, and it is partially in contact with the sandstone First of all, the hard surface of sand and gravel is destroyed to make it soft, and it is taken away by the plate body as a whole, and brought out of th...

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Abstract

The invention relates to a cutting tooth with sawteeth for a drill bit of a pile driver. The cutting tooth comprises a guide plate, a pin hole, a plate, the sawteeth and a cavity. The plate is of a wedge-shaped structure made of cast steel, the guide plate is arranged at an opening end of the plate, the pin hole is formed in the opening end of the plate, the sawteeth are arranged at the front end of the plate, and the mounting cavity is arranged inside the plate. The cutting tooth has the advantages that the cutting tooth is provided with sawtooth structures, accordingly, the gravel contact area of the cutting tooth can be reduced, local pressure of the cutting tooth on gravel can be increased, the efficiency of the pile driver can be doubled under the condition that pressures and rotational speeds are not increased, and the cost of each pile hole can be reduced.

Description

technical field [0001] The invention relates to the technical field of pile foundation construction, in particular to a band-saw cutting tooth for a drill bit of a pile driver. Background technique [0002] At present, in the field of pile foundation construction, when the pile driver encounters a relatively hard sand and gravel stratum, especially in dry hole construction, the front end of the cutting tooth is flat, so that the pressure on the sand and gravel layer per unit area is reduced, and the impact on the sand and gravel is reduced. The cutting speed is reduced, which affects the progress of construction. Contents of the invention [0003] Aiming at the problems existing in the above-mentioned prior art, the present invention provides a sawtooth cutting tooth for a drill bit of a pile driver. Since the sawtooth structure reduces the contact area between the cutting tooth and the sandstone layer under the condition of equal pressure, thereby increasing the pressure,...

Claims

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Application Information

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IPC IPC(8): E21B10/43
Inventor 杨永海章瑞宁李宏愿丁玉亮郝爽
Owner 天津市八方工程机械设备有限公司
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