CN201705208U - Expansive bit - Google Patents
Expansive bit Download PDFInfo
- Publication number
- CN201705208U CN201705208U CN2010202228109U CN201020222810U CN201705208U CN 201705208 U CN201705208 U CN 201705208U CN 2010202228109 U CN2010202228109 U CN 2010202228109U CN 201020222810 U CN201020222810 U CN 201020222810U CN 201705208 U CN201705208 U CN 201705208U
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- Prior art keywords
- sheet
- axis
- slip ring
- hinged
- brill
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- Expired - Fee Related
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Abstract
The utility model discloses an expansive bit, which comprises a center shaft, an annular sliding device and a spring. The annular sliding device is sleeved on the center shaft and slidably connected with the center shaft, the spring is connected with the annular sliding device, the center shaft is provided with a plurality of expansive drilling blades including upper drilling blades and lower drilling blades, upper ends of the upper drilling blades are hinged with the annular sliding device, lower ends of the upper drilling blades are hinged with upper ends of the lower drilling blades, and lower ends of the lower drilling blades are hinged with the lower end of the center shaft.
Description
Technical field
The utility model relates to a kind of drill bit, particularly a kind of extension type drill bit that is used for geothermal heat pump air-conditioner heat exchange hole drill hole.
Background technology
Geothermal heat pump air-conditioner is a kind of novel energy conservation environmental protection air conditioner, and it can make full use of the huge energy of containing in soil and lake, and circular regeneration realize heating and refrigeration to building, and operating cost is lower.The Cooling and Heat Source of this geothermal heat pump air-conditioner adopts buried tube type soil source heat pump system flexible for installation, that be easy to control, this buried tube type soil source heat pump system is embedded in heat exchanger tube underground, by heat transferring medium in being embedded in soil heat exchanger tube and source pump between circulate, realize the exchange heat between source pump and the earth soil.
In the installation process of geothermal heat pump air-conditioner, the heat exchange hole of need spudding on the ground is used for burying heat exchanger tube, so that carry out exchange heat between heat exchanger tube and the earth soil.The drill bit that is used for boring the heat exchange hole at present is fixed drill bit, this drill bit bit diameter in boring procedure is inconvenient to adjust, have again, when these drill bits are holed together as being with the heat exchanger fin base, after boring puts in place, drill bit is difficult for proposing from the interior ring of heat exchanger fin base, brings certain degree of difficulty to construction.
The utility model content
At above-mentioned the deficiencies in the prior art, the technical problems to be solved in the utility model provides a kind of simple in structure, expansive bit that bit diameter is variable.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of expansive bit, it comprises axis, slip ring device and spring, described slip ring device is enclosed within on the described axis and with described axis and is slidingly connected, described spring is connected with described slip ring device, described axis is provided with several telescopic brill sheets, described brill sheet comprises that sheet is bored on top and sheet is bored in the bottom, the upper end and the described slip ring device of described top brill sheet are hinged, the upper end that sheet is bored in the lower end of described top brill sheet and described bottom is hinged, and the lower end of described bottom brill sheet and the lower end of described axis are hinged.
Preferably, described slip ring device is provided with a steady pin.
Preferably, described axis is provided with 2-4 and bores sheet.
Preferably, the lower end of described axis is provided with a stationary annular device, and described stationary annular device is fixedlyed connected with described axis, and the lower end and the described stationary annular device of described bottom brill sheet are hinged.
Technique scheme has following beneficial effect: this expansive bit in use, can drive the slip ring device by spring slides on axis, and then sheet is bored on drive top, the flexible of sheet bored in the bottom, thereby realize bit drills sheet diameter variation, so this drill bit is not in the aperture of holing not simultaneously, more bit change, only needing to adjust the diameter that bores sheet gets final product, can reuse, and easy construction, efficiency of construction can be improved.
Above-mentioned explanation only is the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of manual, below with preferred embodiment of the present utility model and conjunction with figs. describe in detail as after.The specific embodiment of the present utility model is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
The specific embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described in detail.
As shown in Figure 1, it comprises an axis 5 this expansive bit, the upper end of axis 5 is provided with a slip ring device 3, slip ring device 3 is enclosed within on the axis 5 and with axis 5 and is slidingly connected, slip ring device 3 is provided with a steady pin 4, and steady pin 4 can be fixed on fixing slip ring device 3 on the axis.Slip ring device 3 is connected with the lower end of spring 2, and the upper end of spring 2 is connected with drilling rod 1, and the lower end of axis 5 is provided with a stationary annular device 8, and stationary annular device 8 is fixedlyed connected with axis 5.Also be provided with 2-4 telescopic brill sheet on the axis 5, bore sheet and comprise that sheet 6 is bored on top and sheet 7 is bored in the bottom, the upper end and the slip ring device 3 of top brill sheet 6 are hinged, and the upper end that sheet 7 is bored in the lower end of top brill sheet 6 and bottom is hinged, and the lower end and the stationary annular device 8 of bottom brill sheet 7 are hinged.
This expansive bit in use, can drive spring 2 driving slip ring devices 3 by drilling rod 1 slides on axis 5, because it is fixing that the hinged stationary annular device in sheet 7 lower ends 8 is bored in the bottom, therefore when slip ring device 3 when axis 5 slides up and down, it is flexible to drive that sheet 6 is bored on top, sheet 7 is bored in the bottom, thereby realizes bit drills sheet diameter variation.Work as this drill bit like this in the aperture of holing not simultaneously, more bit change only needs the diameter of adjustment brill sheet to get final product, can reuse, and easy construction, can improve efficiency of construction.When this heat exchanger tube base boring of this expansive bit band of employing is arranged again, when getting into prescribed depth, upwards carry drill bit, steady pin 4 is contacted with the heat exchanger tube base to automatically spring open, the elastic force of spring 2 can drive the contraction of bit drills sheet like this, bit drills sheet diameter diminishes, and makes things convenient for drill bit to promote from the inboard of annular base and ring support.
More than expansive bit that the utility model embodiment is provided be described in detail; for one of ordinary skill in the art; thought according to the utility model embodiment; part in specific embodiments and applications all can change; in sum; this description should not be construed as restriction of the present utility model, and all any changes of being made according to the utility model design philosophy are all within protection domain of the present utility model.
Claims (4)
1. expansive bit, it is characterized in that: it comprises axis, slip ring device and spring, described slip ring device is enclosed within on the described axis and with described axis and is slidingly connected, described spring is connected with described slip ring device, described axis is provided with several telescopic brill sheets, described brill sheet comprises that sheet is bored on top and sheet is bored in the bottom, the upper end and the described slip ring device of described top brill sheet are hinged, the upper end that sheet is bored in the lower end of described top brill sheet and described bottom is hinged, and the lower end of described bottom brill sheet and the lower end of described axis are hinged.
2. expansive bit according to claim 1 is characterized in that: described slip ring device is provided with a steady pin.
3. expansive bit according to claim 1 is characterized in that: described axis is provided with 2-4 and bores sheet.
4. expansive bit according to claim 1 is characterized in that: the lower end of described axis is provided with a stationary annular device, and described stationary annular device is fixedlyed connected with described axis, and the lower end and the described stationary annular device of described bottom brill sheet are hinged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202228109U CN201705208U (en) | 2010-06-11 | 2010-06-11 | Expansive bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202228109U CN201705208U (en) | 2010-06-11 | 2010-06-11 | Expansive bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201705208U true CN201705208U (en) | 2011-01-12 |
Family
ID=43442363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202228109U Expired - Fee Related CN201705208U (en) | 2010-06-11 | 2010-06-11 | Expansive bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201705208U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953684A (en) * | 2012-11-30 | 2013-03-06 | 中铁建工集团有限公司 | Drill rod with ream bit |
| CN103603602A (en) * | 2013-10-29 | 2014-02-26 | 河南理工大学 | Variable diameter drill by varying pushing force |
| CN105888593A (en) * | 2016-06-15 | 2016-08-24 | 西南石油大学 | Steel-wire-rope feeding device |
| CN105973105A (en) * | 2016-07-11 | 2016-09-28 | 吴中区横泾嘉运模具厂 | Detection probe assembly of solenoid valve body screw thread tester |
-
2010
- 2010-06-11 CN CN2010202228109U patent/CN201705208U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953684A (en) * | 2012-11-30 | 2013-03-06 | 中铁建工集团有限公司 | Drill rod with ream bit |
| CN103603602A (en) * | 2013-10-29 | 2014-02-26 | 河南理工大学 | Variable diameter drill by varying pushing force |
| CN103603602B (en) * | 2013-10-29 | 2016-08-17 | 河南理工大学 | Change propulsive variable diameter drill |
| CN105888593A (en) * | 2016-06-15 | 2016-08-24 | 西南石油大学 | Steel-wire-rope feeding device |
| CN105973105A (en) * | 2016-07-11 | 2016-09-28 | 吴中区横泾嘉运模具厂 | Detection probe assembly of solenoid valve body screw thread tester |
| CN105973105B (en) * | 2016-07-11 | 2018-09-21 | 康赛特阀门集团（宣城）有限公司 | The detection head assembly of electromagnetic valve body screw thread test machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110112 Termination date: 20110611 |