CN216788327U - Drilling tool for controlling drilling depth of embedded steel bars - Google Patents
Drilling tool for controlling drilling depth of embedded steel bars Download PDFInfo
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- CN216788327U CN216788327U CN202123435489.XU CN202123435489U CN216788327U CN 216788327 U CN216788327 U CN 216788327U CN 202123435489 U CN202123435489 U CN 202123435489U CN 216788327 U CN216788327 U CN 216788327U
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Abstract
The utility model discloses a drilling tool for controlling the drilling depth of a bar planting hole. The drilling tool is provided with a drill bit and a drill rod for bar planting drilling, the peripheral surface of the drill rod is provided with a thread for spiral drilling, and a control nut is sleeved and fixed on the drill rod; the control nut is provided with an internal thread which can be in rotatable tight fit with the drill rod through the thread, and the outer diameter of the control nut is larger than the hole diameter of the drilled hole of the embedded bar; two identical nuts are overlapped to serve as control nuts, and a gasket is arranged between the two nuts and is fixed through reverse screwing. According to the utility model, a high-strength nut which is meshed with a construction drill rod is designed and manufactured according to the characteristics of the thread shape and the grain of the drill rod, and is sleeved on the drill rod and forms a meshed link with a drill bit by virtue of the thread; thereby utilize the frictional force that the screw thread produced between the two to make the nut fixed, fix the nut in the position apart from the drill bit design depth, thereby be greater than the drilling rod through the nut external diameter, and be greater than the drilling diameter and form spacingly, realize the effective control to the muscle drilling depth.
Description
Technical Field
The utility model belongs to the technical field of drilling tool design, and particularly relates to a drilling tool for controlling the drilling depth of a planted bar.
Background
In the building masonry construction, the vertical steel bars of the constructional column are generally fixed with the main structure in a mode of planting the steel bars and adding an adhesive. In the constructional column bar planting drilling construction process, reasonable drilling depth is a key link for ensuring construction quality. If the drilling depth is not enough, the construction quality is difficult to ensure; if the drilling depth is too large, the main structural steel bars are easily damaged, and larger structural hidden danger is brought.
At present, a drilling tool with a ruler is usually adopted for controlling the drilling depth of the steel bar planting of the constructional column, and no convenient drilling measuring method or tool exists in the drilling operation.
Disclosure of Invention
Aiming at the defects, the utility model discloses a drilling tool for controlling the drilling depth of a bar planting hole. The drilling tool can conveniently control the drilling depth of the embedded steel bars, and the drilling efficiency is greatly improved.
The utility model improves the realization of the following technical scheme:
a drilling tool for bar planting drilling depth control, the drilling tool has drill bit and drilling rod that is used for bar planting drilling, its characterized in that: the outer peripheral surface of the drill rod is provided with threads for spiral drilling, and the drill rod is fixedly sleeved with a control nut; the control nut is provided with an internal thread which is rotatably and tightly matched with the drill rod through the thread, and the outer diameter of the control nut is larger than the hole diameter of the drilled hole of the embedded bar.
The control nut is positioned at the position of the drill rod, and the length of the drill rod of which the front end comprises a drill bit is the length of adding 1 cm to the drilling depth of the bar planting.
In order to prevent the control nut from being displaced by external force after being used for a long time, the same two nuts can be superposed to serve as the control nut, and a gasket is arranged between the two nuts and is fixed through reverse screwing. Usually, the rear end nut is reversely screwed after the front end nut is fixed, so that the positioning accuracy of the control nut can be further improved, and loosening is prevented.
According to the utility model, a high-strength nut which is meshed with a construction drill rod is designed and manufactured according to the thread shape and grain characteristics of the drill rod, and the high-strength nut is sleeved on the drill rod and forms a meshed link with a drill bit by virtue of threads. Thereby utilize the frictional force that the screw thread between the two produced to make the nut fixed, fix the nut in the position apart from the drill bit design degree of depth, thereby be greater than the drilling rod through the nut external diameter, and be greater than the drilling diameter and form spacingly, realize the effective control to muscle drilling depth.
Drawings
FIG. 1 is a schematic view of the construction of the drilling tool of the present invention;
fig. 2 is a schematic front view of the control nut.
In the figure, 1 is a drill rod, 2 is a control nut, 3 is a thread, and 4 is a drill rod.
Detailed Description
The present invention is further described below in conjunction with the following detailed description, which is intended to further illustrate the principles of the utility model and is not intended to limit the utility model in any way, but is equivalent or analogous to the present invention without departing from its scope.
With reference to the attached drawings.
A drilling tool for controlling the drilling depth of a bar planting hole is provided with a drill bit 1 for drilling the bar planting hole and a drill rod 4, wherein the peripheral surface of the drill rod 4 is provided with a thread 3 for spiral drilling, and a control nut 2 is fixedly sleeved on the drill rod 4; the control nut 2 is provided with an internal thread which can be in rotatable tight fit with the drill rod 4 through the thread 3, and the outer diameter of the control nut 2 is larger than the hole diameter of the drilled bar planting hole.
The control nut 2 is positioned on the drill rod 4, and the length of the drill rod 4 with the drill bit 1 at the front end is the length of the embedded bar drilling depth plus 1 centimeter.
In order to prevent the control nut 2 from being displaced by external force after long-term use, two identical nuts can be used as the control nut 2, and a gasket is arranged between the two nuts and is fixed by reverse screwing. Usually, the rear nut is screwed back after the front nut is fixed, so that the positioning accuracy of the control nut 2 can be further improved, and loosening is prevented.
As shown in figure 1, the drilling tool of the utility model designs and manufactures an iron control nut 2 which is meshed with a construction drill rod 4 according to the characteristics of the thread shape and the grain of the drill rod, and the iron control nut is sleeved on the drill rod 4 to form a meshed connection fixed state with the drill rod 4 by threads 3. The screw control nut 2 is fixed by a frictional force generated by the screw thread therebetween. The drill rod 4 and the control nut 2 are relatively displaced only when one of the drill rod and the control nut is fixed and the other is rotated. The control nut 2 is made of diamond micro powder and hard alloy, when the drill bit 1 reaches the designed depth, effective limiting is formed, the drill bit 1 is prevented from further penetrating, and the feedback of holding feeling is given to constructors.
In the drilling operation, the drill bit 1 can not further drill and immediately feed back to constructors after the drilling tool reaches the set embedded steel bar depth, the constructors stop drilling construction, the drilling depth can be effectively controlled, the construction quality hidden danger caused by that the construction operators judge by mistake to reach the design depth is avoided, and the damage to the main structure steel bar caused by insufficient or too deep drilling depth can not be met is avoided.
Claims (3)
1. A drilling tool for bar planting drilling depth control, the drilling tool has drill bit and drilling rod that is used for bar planting drilling, its characterized in that: the outer peripheral surface of the drill rod is provided with a thread for spiral drilling, and a control nut is sleeved and fixed on the drill rod; the control nut is provided with an internal thread which is rotatably and tightly matched with the drill rod through the thread, and the outer diameter of the control nut is larger than the hole diameter of the drilled hole of the embedded bar.
2. The drilling tool for tendon-planting drilling depth control according to claim 1, wherein: the control nut is positioned at the position of the drill rod, and the length of the drill rod of which the front end comprises a drill bit is the length of adding 1 cm to the drilling depth of the bar planting.
3. The drilling tool for tendon-planting drilling depth control according to claim 2, wherein: the control nuts are two identical nuts, and a gasket is arranged between the two nuts and is fixed through reverse screwing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123435489.XU CN216788327U (en) | 2021-12-30 | 2021-12-30 | Drilling tool for controlling drilling depth of embedded steel bars |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123435489.XU CN216788327U (en) | 2021-12-30 | 2021-12-30 | Drilling tool for controlling drilling depth of embedded steel bars |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216788327U true CN216788327U (en) | 2022-06-21 |
Family
ID=82011859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123435489.XU Active CN216788327U (en) | 2021-12-30 | 2021-12-30 | Drilling tool for controlling drilling depth of embedded steel bars |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216788327U (en) |
-
2021
- 2021-12-30 CN CN202123435489.XU patent/CN216788327U/en active Active
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