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excavator bit

A technology for excavators and drill bits, which is applied to drill bits, drilling equipment, and earthwork drilling and production, and can solve problems such as fatigue failure, fracture, and low working efficiency of helical columnar drill bits

Inactive Publication Date: 2017-12-19
HOHAI UNIV CHANGZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, the excavator bit is the main construction tool for mine mining, tunnel excavation, highway repair, reinforced concrete crushing, permafrost and other operations. It usually encounters dry excavation and wet excavation alternately. Due to its harsh working environment, it needs to bear Huge wear and tear, and the existing excavator bits are often designed as a single helical column in order to ensure the life of the operation in harsh environments. Fatigue failure or even fracture will soon occur under the action of this alternating stress, the life is very short, and the working efficiency of a single helical columnar drill bit is very low

Method used

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Embodiment Construction

[0013] In order to make the content of the present invention more clearly understood, the present invention will be further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

[0014] Such as Figure 1~3 Shown, a kind of excavator drill bit, it comprises drill bit body, shown drill bit body has a plurality of sub-drill bits 3, is provided with digging edge section 7 on the peripheral wall of the top of described sub-drill bit 3, and the bottom of described sub-drill bit 3 is provided with It is a conical helical section 6 , and the cutting edge section 7 has a plurality of cutting edges arranged radially along the sub-drill 3 .

[0015] Such as Figure 1~3 As shown, the drill bit body also has an assembly connecting shaft 1 and an upper connecting rod 2 of the excavator bit.

[0016] Such as Figure 1~3 As shown, the upper connecting rod 2 of the excavator bit includes the main shaft 4 of the upper connecting rod of th...

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Abstract

The invention discloses an excavator drill bit, which comprises a drill bit body, the drill bit body shown has a plurality of sub-drill bits, the top peripheral wall of the sub-drill bits is provided with a digging segment, and the bottom of the sub-drill bits is provided with a conical The helical section, the digging blade segment has a plurality of digging blades radially arranged along the sub-drill. The invention can not only carry out dry excavation, but also can carry out wet excavation, which can increase the strength of the drill bit and prolong its service life.

Description

technical field [0001] The invention relates to an excavator drill bit. Background technique [0002] At present, the excavator bit is the main construction tool for mine mining, tunnel excavation, highway repair, reinforced concrete crushing, permafrost and other operations. It usually encounters dry excavation and wet excavation alternately. Due to its harsh working environment, it needs to bear Huge wear and tear, and the existing excavator bits are often designed as a single helical column in order to ensure the life of the operation in harsh environments. Fatigue failure or even fracture will occur soon under the action of this alternating stress, and the service life is very short, and the working efficiency of a single helical columnar drill bit is very low. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide an excavator drill bit, which can not only carry out dry ex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B10/42
Inventor 苑明海康明霞刘亚洲
Owner HOHAI UNIV CHANGZHOU