CN220748151U - Umbrella-shaped reaming bit for rock anchor rod foundation - Google Patents
Umbrella-shaped reaming bit for rock anchor rod foundation Download PDFInfo
- Publication number
- CN220748151U CN220748151U CN202322431548.9U CN202322431548U CN220748151U CN 220748151 U CN220748151 U CN 220748151U CN 202322431548 U CN202322431548 U CN 202322431548U CN 220748151 U CN220748151 U CN 220748151U
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- Prior art keywords
- umbrella
- rod
- drill rod
- base
- telescopic
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- 239000011435 rock Substances 0.000 title claims abstract description 15
- 239000000956 alloy Substances 0.000 claims abstract description 13
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 13
- 230000000670 limiting effect Effects 0.000 claims description 16
- 238000005553 drilling Methods 0.000 claims description 10
- 238000010276 construction Methods 0.000 description 5
- 239000002775 capsule Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The utility model discloses an umbrella-shaped reaming bit for a rock anchor rod foundation, which comprises a main drill rod and a telescopic drill rod, wherein a groove with an opening at the lower end is formed in the main drill rod, the upper end of the telescopic drill rod stretches into the groove, a base is arranged at the lower end of the telescopic drill rod, two symmetrical umbrella-shaped crank arms are arranged between the main drill rod and the base, the upper end and the lower end of each umbrella-shaped crank arm are respectively hinged with the main drill rod and the base, and alloy cutting sheets are arranged on the outer side surfaces of the two umbrella-shaped crank arms.
Description
Technical Field
The utility model relates to the technical field of building construction, in particular to an umbrella-shaped reaming bit for a rock anchor rod foundation.
Background
The rock foundation anchor rod is suitable for column foundations directly built on bedrock and building foundations with larger bearing tension or horizontal force, the anchor rod foundation and the bedrock are connected into a whole, the diameter of a rod hole is preferably 3 times of the diameter of an anchor rod rib body, but not less than one time of the diameter of the anchor rod rib body plus 50mm; the anchor rod rib body is preferably hot rolled ribbed steel bars, and the grouting cement mortar strength is not preferably lower than 30MPa.
However, at the construction site at present, along with the technological development of society, a construction process represented by an enlarged head capsule type anchor rod appears, and compared with the traditional anchor rod with fixed diameter, the construction process has very high drawing bearing capacity characteristic value and reliability, reduces the total number of the traditional anchor rod, and simultaneously reduces the construction cost. How to finish the hole diameter excavation of the enlarged head of the anchoring section better and more effectively becomes a difficult problem in the construction of the capsule type anchor rod. The traditional bag-type body-expanding anchor rod adopts high-pressure rotary jet flow reaming, and then the bag body is put down, installed and grouting is carried out to form an effective anti-floating body, however, the working efficiency of the mode is low.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art, and provides an umbrella-shaped reaming bit for a rock anchor rod foundation, which comprises a main drill rod and a telescopic drill rod, wherein a groove with an opening at the lower end is formed in the main drill rod, the upper end of the telescopic drill rod stretches into the groove, a base is arranged at the lower end of the telescopic drill rod, two symmetrical umbrella-shaped crank arms are arranged between the main drill rod and the base, the upper end and the lower end of each umbrella-shaped crank arm are respectively hinged with the main drill rod and the base, and alloy cutting blades are arranged on the outer side surfaces of the two umbrella-shaped crank arms.
Preferably, a connector is fixedly arranged on the lower end face of the main drill rod for hinging and fixing the umbrella-shaped crank arm, and the width of the connector is the same as that of the base.
Preferably, the umbrella-shaped crank arm comprises an upper hinge rod and a lower hinge rod which are connected in a rotating way, the upper end of the upper hinge rod is hinged with the connector, and the lower end of the lower hinge rod is hinged with the base.
Preferably, a limiting plate is transversely arranged in the groove of the main drill rod, two ends of the limiting plate are fixed on the inner side wall of the groove, and the control on the stroke of the telescopic drill rod is completed through the limiting plate to the position limitation of the upper end of the telescopic drill rod.
Preferably, the alloy cutting blades are arranged on the lower hinge rod and are uniformly distributed on the outer side surface of the lower hinge rod.
In summary, the utility model has the following beneficial effects: according to the utility model, the drill bit is improved by fully utilizing the original complete equipment of the roof bolter, and the drill bit is unfolded at the expanding part by utilizing the umbrella-shaped structure with variable diameter, so that the variable diameter alloy drilling tool is formed for operation, and the work efficiency is greatly improved by about 80%.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:
fig. 1 is a schematic diagram of the structure of the present utility model.
In the figure: 1. a main drill pipe; 2. a telescopic drill rod; 3. a base; 4. alloy cutting blades; 5. a connector; 6. an upper hinge rod; 7. a lower hinge rod; 8. and a limiting plate.
Detailed Description
The technical scheme of the utility model is described in detail below through the drawings, but the protection scope of the utility model is not limited to the embodiments.
Referring to fig. 1, the umbrella-shaped reamer bit for a rock bolt foundation of the utility model comprises a main drill rod 1 and a telescopic drill rod 2, wherein a groove with an opening at the lower end is formed in the main drill rod 1, the upper ends of the telescopic drill rod 2 extend into the groove, so that the main drill rod 1 can be used as a sleeve, the telescopic drill rod 2 can be pumped in the inside, in order to prevent the telescopic drill rod 2 from larger transverse displacement in the horizontal direction, the diameter of the telescopic drill rod 2 can be made to be the same as the inner diameter of the groove as long as the vertical movement of the telescopic drill rod 2 is not influenced, the lower end of the telescopic drill rod 2 is provided with a base 3, two symmetrical umbrella-shaped crank arms are arranged between the main drill rod 1 and the base 3, the upper ends and the lower ends of the umbrella-shaped crank arms are respectively hinged with the main drill rod 1 and the base 3, the outer side surfaces of the two umbrella-shaped crank arms are provided with alloy cutting blades 4, the base 3 is a hinge point for the umbrella-shaped crank arms, the telescopic drill rod 2 is arranged at the lower end of the telescopic drill rod 2, the telescopic drill rod 2 moves up and down along with the movement of the telescopic drill rod 2, and the vertical movement of the telescopic drill rod 2 does not deviate from the main drill rod 2 when the telescopic drill rod 2 does not move vertically, and the telescopic crank arms completely reach the normal state when the telescopic drill rod is stopped; when the utility model is put into use, the drill rod is lowered until the umbrella-shaped reaming bit reaches the variable diameter depth, the front end of the base 3 is extruded by rock and then moves upwards, the telescopic drill rod 2 moves to the upper end to be abutted to the top of the groove, the bent arm is unfolded, the alloy cutting blade 4 on the telescopic drill rod contacts with the rock, and the main drill rod 1 rotates to drive the cutting blade to start cutting the rock, so that the reaming diameter required by design is formed.
Preferably, a connector 5 is fixedly arranged on the lower end surface of the main drill rod 1 for hinging and fixing the umbrella-shaped crank arm, the width of the connector 5 is the same as that of the base 3, the connector 5 is arranged for hinging the umbrella-shaped crank arm, the width of the connector 5 is the same as that of the base 3, the mode can enable the upper hinging point and the lower hinging point of the umbrella-shaped crank arm to be positioned in the same vertical line direction, and when the umbrella-shaped crank arm is in a normal state, the umbrella-shaped crank arm is completely in a vertical state, and the condition that the alloy cutting sheet 4 damages the original hole when being lowered due to the inclined section is avoided.
Preferably, the umbrella-shaped crank arm comprises an upper hinge rod 6 and a lower hinge rod 7 which are connected in a rotating way, the upper end of the upper hinge rod 6 is hinged with the connector 5, the lower end of the lower hinge rod 7 is hinged with the base 3, the alloy cutting sheets 4 are arranged on the lower hinge rod 7 and are uniformly distributed on the outer side surface of the lower hinge rod 7, in the technical scheme, the upper hinge rod 6 does not play a role of drilling, so that the upper hinge rod 6 does not need to be provided with the alloy cutting sheets 4, and weight and materials are reduced.
Preferably, a limiting plate 8 is transversely arranged in the groove of the main drill rod 1, two ends of the limiting plate 8 are fixed on the inner side wall of the groove, the stroke of the telescopic drill rod 2 is controlled by limiting the position of the upper end of the telescopic drill rod 2 through the limiting plate 8, in the utility model, the telescopic drill rod 2 starts to work when the upper end is abutted to the top of the groove, therefore, the limiting plate 8 is arranged in the groove to serve as a limiting effect, the effect is the same as that of the top of the groove, the vertical position of the limiting plate 8 is adjustable, the opening width of the umbrella-shaped crank arm is variable, and the position of the limiting plate 8 is determined according to the diameter of the expansion head of the anchor rod.
Therefore, the utility model fully utilizes the original complete equipment of the roof bolter to improve the drill bit, and utilizes the umbrella-shaped device with variable diameter to open the drill bit at the expanding part to form the alloy drilling tool with variable diameter for operation, thereby greatly improving the work efficiency.
While the utility model has been shown and described with reference to certain preferred embodiments thereof, it is not to be construed as limited to the utility model itself, but various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (5)
1. An umbrella-shaped reaming bit for a rock bolt foundation, which is characterized in that: including main drilling rod and telescopic drilling rod, the recess of lower extreme open-ended has been seted up to the inside of main drilling rod, the upper end of telescopic drilling rod stretches into in the recess, and the lower extreme of telescopic drilling rod is provided with the base, is located two umbrella-shaped curved arms of symmetry between main drilling rod and the base, the upper and lower both ends of umbrella-shaped curved arm are articulated with main drilling rod and base respectively, are located two the lateral surface of umbrella-shaped curved arm is provided with alloy cutting piece.
2. A rock bolt foundation umbrella reamer bit according to claim 1, wherein: the lower end face of the main drill rod is fixedly provided with a connector for hinging and fixing the umbrella-shaped crank arm, and the width of the connector is the same as that of the base.
3. A rock bolt foundation umbrella reamer bit according to claim 2, wherein: the umbrella-shaped crank arm comprises an upper hinge rod and a lower hinge rod which are connected in a rotating mode, the upper end of the upper hinge rod is hinged to the connector, and the lower end of the lower hinge rod is hinged to the base.
4. A rock bolt foundation umbrella reamer bit according to claim 3, wherein: a limiting plate is transversely arranged in the groove of the main drill rod, two ends of the limiting plate are fixed on the inner side wall of the groove, and the telescopic drill rod travel is controlled through limiting the position of the upper end of the telescopic drill rod by the limiting plate.
5. A rock bolt foundation umbrella reamer bit of claim 4, wherein: the alloy cutting blades are arranged on the lower hinge rod and are uniformly distributed on the outer side surface of the lower hinge rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322431548.9U CN220748151U (en) | 2023-09-07 | 2023-09-07 | Umbrella-shaped reaming bit for rock anchor rod foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322431548.9U CN220748151U (en) | 2023-09-07 | 2023-09-07 | Umbrella-shaped reaming bit for rock anchor rod foundation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220748151U true CN220748151U (en) | 2024-04-09 |
Family
ID=90553032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322431548.9U Active CN220748151U (en) | 2023-09-07 | 2023-09-07 | Umbrella-shaped reaming bit for rock anchor rod foundation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220748151U (en) |
-
2023
- 2023-09-07 CN CN202322431548.9U patent/CN220748151U/en active Active
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