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Rotary percussion hammer

A technology of impact hammer and impact head, which is applied in drilling equipment, earthwork drilling, driving device for drilling in wellbore, etc., can solve the problems of affecting the working efficiency of impact hammer, weaken the impact force of impact hammer, etc. , Increase the impact force and avoid the effect of collapse

Inactive Publication Date: 2011-01-26
上海尔速机械设备有限公司
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

However, due to the hardness of the underground rock and the existence of these two forces, it is enough to make the impact hammer rebound upwards, weakening the impact force of the impact hammer, thereby affecting the working efficiency of the impact hammer

Method used

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Embodiment Construction

[0010] A rotary impact hammer of the present invention is composed of a spreader 1, a rotary power device 2, a connecting device 3, a mud suction pipe 5, an impact device 6, and a turning device 7. 1 Connect with the crane for construction work. The rotary power device 2 provides rotary power for a rotary impact hammer of the present invention. The impact device 6 provides downward impact power for a rotary impact hammer of the present invention. Since a rotary impact hammer of the present invention rotates continuously during operation, the rotary device 7 is required to provide an oil supply circuit for the impact device 6 and high-pressure gas for sand washing.

[0011] The rotary device 7 is composed of a rotary connecting shaft 71, a bearing 72, and a shaft sleeve 73. A bearing 72 is arranged between the upper end of the rotary connecting shaft 71 and the shaft sleeve 73; The upper end of the rotary connection shaft 71 of 7 is fixedly connected, and the lower end of the...

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Abstract

The invention relates to an excavating machine, in particular to the excavating machine with rotary percussion hammer. The excavating machine is mainly applied to the construction of cast-in-place pile holes of an underground rock geologic horizon. The invention aims to overcome the influence of the reacting force of a percussion hammer and provide the rotary percussion hammer with steel tube brake tightening device. The rotary percussion hammer consists of a hanging tool, a rotary power device, a connection device, a mud suction tube, an impact device and a revolution device, wherein the impact device consists of a hydraulic impactor and an impact head which is arranged at the front end of the hydraulic impactor; the rotary power device is fixedly connected with the upper end of a revolution connection shaft of the revolution device through a connector, and the lower end of the revolution connection shaft is fixedly connected with the hydraulic impactor; and the brake tightening device is arranged on the outer side of the revolution device. Due to the action of the brake tightening device, the upward reacting force of the rotary percussion hammer is obviously reduced and then an impact force of the rotary percussion hammer is increased.

Description

technical field [0001] The invention relates to an excavating machine, in particular to an excavating machine with a rotary impact function. It is mainly used in the construction of cast-in-situ pile holes in underground rock geological layers. Background technique [0002] In the prior art, cast-in-place piles are widely used in the construction of high-rise buildings, highways, railways, bridges and subways. For the construction of cast-in-situ piles in underground rock geological layers, the construction efficiency of ordinary construction machinery is too low, so rotary impact hammers are widely used. The construction of cast-in-situ pile holes adopts the impact construction technology of steel pipe casing, which mainly uses the impact hammer to impact the underground rock layer at a higher frequency to break the rock; at the same time, the use of steel pipe casing can prevent landslides. Enter the steel pipe casing, dilute gravel and soil into mud, then pump it out th...

Claims

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Application Information

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IPC IPC(8): E21B4/14
Inventor 丁明明
Owner 上海尔速机械设备有限公司
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