CN214887143U - Anchor rod hole bottom positive wedge-shaped reaming device - Google Patents
Anchor rod hole bottom positive wedge-shaped reaming device Download PDFInfo
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- CN214887143U CN214887143U CN202120240521.XU CN202120240521U CN214887143U CN 214887143 U CN214887143 U CN 214887143U CN 202120240521 U CN202120240521 U CN 202120240521U CN 214887143 U CN214887143 U CN 214887143U
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Abstract
The utility model discloses a positive wedge-shaped reaming device for the bottom of an anchor rod hole, which comprises a pipe body, a cutter, a guide rod and a spring; the pipe body is provided with a cutter groove for placing a cutter in the middle, the length direction of the cutter groove is consistent with that of the pipe body, the top of the cutter groove is provided with a pin shaft guide groove, the pin shaft guide groove penetrates through the front end wall and the rear end wall of the pipe body, the length direction of the pin shaft guide groove is consistent with that of the cutter groove, the top end of the cutter is connected through a fixed pin shaft arranged in the pin shaft guide groove, and the fixed pin shaft can longitudinally move in the pin shaft guide groove; the top end of the pipe body is provided with a longitudinal connecting hole, the bottom end of the longitudinal connecting hole is communicated with the cutter groove, a guide rod is inserted in the longitudinal connecting hole, the bottom end of the guide rod is abutted to the fixed pin shaft, a first limiting bulge is arranged in the middle of the guide rod, a second limiting bulge is arranged on the inner side of the bottom end of the longitudinal connecting hole, a spring is arranged between the first limiting bulge and the second limiting bulge, and the spring is sleeved on the outer side of the guide rod.
Description
Technical Field
The utility model relates to a stock support field especially relates to a positive wedge reaming device in stock hole bottom.
Background
The anchor bolt support is an active support, the self-bearing capacity of the surrounding rock can be fully utilized to change a construction carrier into a bearing body, deformation of the surrounding rock is blocked, and the passive support has obvious advantages compared with the traditional passive support mode. Therefore, it is necessary to improve the supporting requirements of soft rock mass.
The application number is CN 201520220428.7's chinese patent provides an anchor rod hole bottom wedge reaming device that falls, which comprises a housin, the cutter, the push rod cap, round pin axle and casing cap, when carrying out reaming, is connected this device and drilling rod, exerts drilling rod axial force through the rig in the drilling rod pivoted, and then push rod compression spring releases the cutter, makes cutter and casing be positive "V" word structure, and the cutter rotates and constantly cuts the country rock along with the drilling rod together, finally can form a wedge-shaped cavity. The device has the disadvantage of not being used for reaming a positive wedge.
Disclosure of Invention
The utility model aims at the above problem, a positive wedge reaming device at anchor rod hole bottom is provided for expand positive wedge anchor rod hole, finally change the soft rock mass to the supporting resistance of stock, improve the anchor effect of fixing.
In order to realize the purpose, the technical scheme of the utility model is that:
a positive wedge-shaped reaming device for the hole bottom of an anchor rod hole comprises a pipe body, a cutter, a guide rod and a spring; the pipe body is provided with a cutter groove for placing a cutter in the middle, the length direction of the cutter groove is consistent with that of the pipe body, the top of the cutter groove is provided with a pin shaft guide groove, the pin shaft guide groove penetrates through the front end wall and the rear end wall of the pipe body, the length direction of the pin shaft guide groove is consistent with that of the cutter groove, the top end of the cutter is connected through a fixed pin shaft arranged in the pin shaft guide groove, and the fixed pin shaft can longitudinally move in the pin shaft guide groove; the top end of the pipe body is provided with a longitudinal connecting hole, the bottom end of the longitudinal connecting hole is communicated with the cutter groove, a guide rod is inserted in the longitudinal connecting hole, the bottom end of the guide rod is abutted to the fixed pin shaft, a first limiting bulge is arranged in the middle of the guide rod, a second limiting bulge is arranged on the inner side of the bottom end of the longitudinal connecting hole, a spring is arranged between the first limiting bulge and the second limiting bulge, and the spring is sleeved on the outer side of the guide rod.
Furthermore, the edge of the bottom end of the cutter groove is arranged in an inclined plane shape so as to be beneficial to releasing the cutter groove after the bottom end of the cutter is stressed.
Furthermore, the bottom end of the pipe body is provided with a connecting joint used for being connected with the end of the drill rod.
Further, the top end of the tube body is in threaded connection with a rod nut, the rod nut is sleeved on the outer side of the guide rod, and the rod nut is located above the first limiting protrusion.
Furthermore, the bottom end of the cutter is arc-shaped, and trapezoidal cutting teeth are arranged on the outer side of the cutter at equal intervals.
Furthermore, the bottom end of the guide rod is sharp, and the top end of the guide rod is fixedly connected with a top sleeve.
Compared with the prior art, the utility model has the advantages and positive effect be:
when the utility model is used, firstly, the anchor rod hole is drilled, then, the bottom end of the pipe body is connected with one end of the drill rod, the hole bottom reaming device and the drill rod are inserted into the anchor rod hole, the drill machine exerts certain thrust on the drill rod while rotating, the hole bottom reaming device moves towards the interior of the anchor rod hole along with the rotation of the drill rod, after the top end of the guide rod props against the bottom of the hole, the lower end of the guide rod props against the fixed pin shaft, the fixed pin shaft and the cutter are fixed, the pipe body continues to move upwards, and the bottom end of the cutter is upwards pushed out of the cutter; meanwhile, the cutter rotates along with the pipe body to cut the coal rock mass, and a positive wedge-shaped cavity is gradually expanded at the bottom of the drilled hole; after the drilling slag is discharged by using compressed air, filling an anchoring agent into the drilled hole and the cavity of the positive wedge shape, inserting an anchor rod, and after the anchoring agent is solidified, realizing the supporting operation of the rock body; the anchor rod support device is simple, convenient and fast to operate, effectively improves the support effect of the anchor rod on the rock mass, and meets the support requirement of the soft rock mass roadway.
What need explain here is, the anchor rod hole bottom wedge-shaped reaming device that mentions for the background art, the utility model discloses a device carries out reaming and after filling the anchoring agent, and the anchoring agent solidifies in reaming department, forms a little head inwards, major part outward anchor piece, and the major surface and the stock atress direction of anchor piece back of the body mutually, and when the stock atress, the soft rock mass is to applying the stock support resistance to the stock through the anchor piece, and this stock support resistance acts on the major part department of anchor piece, and lifting surface is big, and the support resistance that applys to the stock is corresponding great, and the anchor is effectual.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of the tube;
fig. 3 is a usage effect diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, any modifications, equivalent replacements, improvements, etc. made by other embodiments obtained by a person of ordinary skill in the art without creative efforts shall be included in the protection scope of the present invention.
As shown in fig. 1, 2 and 3, the embodiment discloses a positive wedge-shaped reaming device for the bottom of an anchor rod hole, which comprises a pipe body 1, a cutter 2, a guide rod 4 and a spring 5; the bottom end of the pipe body 1 is provided with a connecting joint 102 used for being connected with the end of a drill rod, the middle of the pipe body 1 is provided with a cutter groove 101 used for placing a cutter 2, the length direction of the cutter groove 101 is consistent with that of the pipe body 1, the top of the cutter groove 101 is provided with a pin shaft guide groove 104, the pin shaft guide groove 104 is communicated with the cutter groove 101, the pin shaft guide groove 101 penetrates through the front end wall and the rear end wall of the pipe body 1, the length direction of the pin shaft guide groove 104 is consistent with that of the cutter groove 101, the top end of the cutter 2 is connected with a fixed pin shaft 3 arranged in the pin shaft guide groove 104, and the edge of the bottom end of the cutter groove 101 is in an inclined plane shape so as to be beneficial to the cutter 2 to be separated from the cutter groove 101 after being stressed; the fixed pin shaft 3 can move longitudinally in the pin shaft guide groove 104; a longitudinal connecting hole 105 is arranged at the center of the top end of the pipe body 1, the bottom end of the longitudinal connecting hole 105 is communicated with the cutter groove, and the longitudinal connecting hole 105 is internally provided with
A guide rod 4 is inserted, the bottom end of the guide rod 4 is abutted against the fixed pin shaft 3, a first limiting bulge 401 is arranged in the middle of the guide rod 4, a second limiting bulge 103 is arranged on the inner side of the bottom end of the longitudinal connecting hole 105, a spring 5 is arranged between the first limiting bulge 401 and the second limiting bulge 103, and the spring 5 is sleeved on the outer side of the guide rod 4; the top end of the guide rod 4 is fixedly connected with a top sleeve 7. The top end of the tube body 1 is in threaded connection with a rod nut 6, the rod nut 6 is sleeved on the outer side of the guide rod 4, and the rod nut 6 is located above the first limiting protrusion 401.
Mounting notches 1021 are formed in two sides of the connecting joint 102, so that the connecting joint of the reaming device can be conveniently inserted into a drill rod through a wrench, and the drill rod is clamped and connected and fixed with the connecting joint.
The spring is 60mm long, 16mm middle warp phi, 2.2mm diameter of the spring and 8 effective turns, and the rigidity of the spring can ensure normal compression deformation and restore to the original shape.
The length of the guide rod is 161mm, the lower end of the guide rod is a cone and is used for pushing the cutter and fixing the pin shaft, the bottom end of the guide rod can be connected with the fixing pin shaft, and the cutter can conveniently return to the original position after cutting operation is completed.
The diameter phi of the top sleeve is 26mm, the thickness of the top sleeve is 10mm, the middle round hole phi is 13mm, a welding groove is formed in the middle round hole phi, the top sleeve and the guide rod are welded and connected into a whole, and the top sleeve is propped against the bottom of the hole after being stressed to play a role in fixing.
The rod body nut is made of continuous casting ductile iron, so that the guide rod is not easy to wear.
When the hole expanding device is used for supporting operation, the supporting operation is carried out according to the following steps.
Step one, drilling: connecting a drill bit with a drill rod, inserting the other end of the drill rod into the drill rig, starting the drill rig to drill at a preset position, introducing water into the drill rod from the drill rod in the drilling process, settling dust and discharging slag, stopping drilling when the drill rod almost completely enters the preset position in the drill hole 8, pulling out the drill rod, and completing the drilling work.
Step two, hole expansion: inserting a top sleeve in the hole expanding device into the drill hole 8, connecting a connecting joint at the bottom end of the pipe body 1 with one end of a drill rod 9, and inserting the other end of the drill rod 9 into the drilling machine; the drilling machine is started, the pipe body rotates along with the drill rod, the drilling machine applies certain thrust to the drill rod 9 while rotating, the bottom of the pipe body 1 is pushed under the action of stress, after the top sleeve props against the bottom of a drill hole 8, the lower end of the guide rod 4 props against the fixed pin shaft and the tail of the cutter, the pipe body continues to move upwards through the pin shaft guide groove and the spring, and the cutter is pushed out after being contacted with the bottom end of the cutter groove; the cutter rotates along with the pipe body, so that the coal rock body is cut, and a cavity in a regular wedge shape is gradually expanded at the bottom of the drilled hole.
Thirdly, anchoring: after reaming, taking out the drill rod and the reaming device; and discharging water and drilling slag in the drilled hole by utilizing underground compressed air, then putting the anchoring agent into the drilled hole, then pushing the anchoring agent into the bottom of the drilled hole by using the anchor rod, inserting the other end of the anchor rod into the drilling machine, starting the drilling machine to stir the anchoring agent, stopping stirring after stirring for 1-2 minutes, installing a tray after the anchoring agent is solidified to reach the anchoring strength, and applying pretightening force to the nut by using the anchor rod torque amplifier to finish the anchoring work.
The utility model is simple in operation, convenient and fast, it solidifies in the cavity of positive wedge through the anchoring agent and forms a positive wedge-shaped block solid that hinders the stock to deviate from the anchor rod hole to avoided deviating from of stock, effectively improved the stock to the effect of strutting of rock mass, satisfied the needs of strutting in soft rock mass tunnel.
Claims (6)
1. The utility model provides an anchor rod hole bottom positive wedge reaming device which characterized in that: comprises a tube body, a cutter, a guide rod and a spring; the pipe body is provided with a cutter groove for placing a cutter in the middle, the length direction of the cutter groove is consistent with that of the pipe body, the top of the cutter groove is provided with a pin shaft guide groove, the pin shaft guide groove penetrates through the front end wall and the rear end wall of the pipe body, the length direction of the pin shaft guide groove is consistent with that of the cutter groove, the top end of the cutter is connected through a fixed pin shaft arranged in the pin shaft guide groove, and the fixed pin shaft can longitudinally move in the pin shaft guide groove; the top end of the pipe body is provided with a longitudinal connecting hole, the bottom end of the longitudinal connecting hole is communicated with the cutter groove, a guide rod is inserted in the longitudinal connecting hole, the bottom end of the guide rod is abutted to the fixed pin shaft, a first limiting bulge is arranged in the middle of the guide rod, a second limiting bulge is arranged on the inner side of the bottom end of the longitudinal connecting hole, a spring is arranged between the first limiting bulge and the second limiting bulge, and the spring is sleeved on the outer side of the guide rod.
2. The anchor rod hole bottom positive wedge reaming device of claim 1, wherein: the edge of the bottom end of the cutter groove is arranged in an inclined plane shape so as to be beneficial to releasing the cutter groove after the bottom end of the cutter is stressed.
3. The anchor rod eye bottom positive wedge reaming device of claim 2, wherein: and the bottom end of the pipe body is provided with a connecting joint used for being connected with the end head of the drill rod.
4. The anchor rod eye bottom positive wedge reaming device of claim 3, wherein: the top end of the tube body is in threaded connection with a rod body nut, the rod body nut is sleeved on the outer side of the guide rod, and the rod body nut is located above the first limiting protrusion.
5. The anchor rod hole bottom positive wedge reaming device of claim 4, wherein: the bottom end of the cutter is arc-shaped, and trapezoidal cutting teeth are arranged on the outer side of the cutter at equal intervals.
6. The anchor rod hole bottom positive wedge reaming device of claim 5, wherein: the bottom end of the guide rod is sharp, and the top end of the guide rod is fixedly connected with a top sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120240521.XU CN214887143U (en) | 2021-01-28 | 2021-01-28 | Anchor rod hole bottom positive wedge-shaped reaming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120240521.XU CN214887143U (en) | 2021-01-28 | 2021-01-28 | Anchor rod hole bottom positive wedge-shaped reaming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214887143U true CN214887143U (en) | 2021-11-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120240521.XU Active CN214887143U (en) | 2021-01-28 | 2021-01-28 | Anchor rod hole bottom positive wedge-shaped reaming device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214887143U (en) |
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2021
- 2021-01-28 CN CN202120240521.XU patent/CN214887143U/en active Active
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