Freezing pipe capable of being pulled out and matched pipe puller

A technology of freezing tubes and tube extractors, which is applied in infrastructure engineering, soil protection, construction, etc., can solve problems such as high heating costs, heating or disposal, and damage to frozen soil structures, saving resource costs, shortening time, Simple steps to operate

CN112376545APending Publication Date: 2021-02-19EAST CHINA UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-02-19

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Abstract

The invention relates to a freezing pipe capable of being pulled out and a matched pipe puller. The freezing pipe comprises a pipe body, one end of the pipe body is provided with a right-handed rotation external thread, and the other end of the pipe body is provided with a right-handed rotation internal thread matched with the right-handed rotation external thread; a left-hand rotation internal thread is formed in the pipe body; at least two axial grooves are formed in the inner wall of one end of the right-hand rotation internal thread of the pipe body and connected with the left-hand rotation internal thread; the matched pipe puller comprises a pulling-out device and a plurality of lengthening rods; the pulling-out device is detachably connected with the lengthening rods; the pulling-outdevice comprises a rod part and a working part, and the rod part is fixedly connected with the center of the working part; and the working part is matched with an axial groove of the freezing pipe, and a left-hand rotation external thread is arranged on the edge of the working part and matched with the left-hand rotation internal thread of the freezing pipe. Compared with the prior art, pipe inserting in the drilling process and pulling-out of the freezing pipe after freezing engineering is completed can be achieved; and the freezing pipe can be pulled out at any time, operation steps are simple, time is shortened, and resource cost is saved.
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Description

technical field

[0001] The invention relates to a pull-out freezing pipe and a matching pipe puller, belonging to the technical field of rock and soil support engineering. Background technique

[0002] The artificial freezing method is to set up freezing pipes in the soil layer and circulate the refrigerant in the freezing pipes to reduce the temperature of the soil layer to freeze the soil. Therefore, the freezing pipes are the key to the freezing method. However, freezing engineering is a kind of temporary support engineering. After the main structure is completed, the freezing pipe will no longer play a role. However, since the frozen pipe is generally made of multiple screws, it is rotated according to the direction of thread tightening when drilling, and the soil layer is in a soft state. At this time, if the original direction is rotated, the adhesion between the multi-section frozen pipe and the frozen soil will have a cumulative effect, and the torque will even exce...

Examples

Embodiment Construction

[0020] In order to achieve the above purpose and effects, the technical means and structures adopted in the present invention will be described in detail in terms of the features and functions of the preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0021] Referring to the accompanying drawings, a pull-out freezing tube includes a tube body 1, one end of the tube body 1 is provided with a right-handed external thread 11, and the other end is provided with a right-handed internal thread 11 adapted to the right-handed external thread 11. thread 12; the inside of the pipe body 1 is provided with a left-handed internal thread 13; the inner wall of one end of the right-handed internal thread of the pipe body 1 is provided with at least two axial grooves 14, and the axial grooves 14 are in phase with the left-handed internal thread 13 catch.

[0022] The right-handed internal thread 12 is spaced apart from the left-handed internal thread...