CN210858767U - Constant-resistance anchor rod with self-adaptive drilling inclination - Google Patents
Constant-resistance anchor rod with self-adaptive drilling inclination Download PDFInfo
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- CN210858767U CN210858767U CN201921745237.7U CN201921745237U CN210858767U CN 210858767 U CN210858767 U CN 210858767U CN 201921745237 U CN201921745237 U CN 201921745237U CN 210858767 U CN210858767 U CN 210858767U
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Abstract
The utility model provides a drilling inclination self-adaptive constant resistance anchor rod, which comprises a rod body, a constant resistance device, a spherical bearing plate, an adjusting pad and a nut; the outer surface of the rod body is provided with a thread structure; the constant-resistance device is cylindrical, is in threaded connection with the rod body and is sleeved at one end part of the rod body; the spherical bearing plate comprises a flat plate part and a spherical convex part positioned in the center of the flat plate part, and the spherical bearing plate penetrates through the through hole of the bearing plate and is sleeved on the constant resistance device; the nut is sleeved at the end part of the constant resistance device; the adjusting cushion is arranged on the constant-resistance device and located between the spherical bearing plate and the nut. The device makes three contact site form the hinge connection through setting up the adjustment pad between loading board and nut, realizes automatic aligning, and drilling inclination self-adaptation is with the even spherical loading board of applying of pretightning force, the good characteristic of performance constant resistance stock effectively, simple structure, preparation construction convenience.
Description
Technical Field
The utility model belongs to the technical field of the anchor bolt is strutted, concretely relates to constant resistance stock of drilling inclination self-adaptation.
Background
In 2011, a constant-resistance anchor rod which has high constant resistance, large elongation and strong energy absorption and structurally presents a negative Poisson ratio effect is researched and developed by a deep national key laboratory and flood academy team.
Based on the excellent characteristics of high constant resistance, large elongation and strong energy absorption of constant-resistance anchor rods in large-deformation support, a brand-new coal mining process, namely a 110 construction method and an N00 construction method, and a landslide Newton force remote monitoring system integrating slope control, reinforcement, monitoring and early warning are explored and developed at present. At present, more than 500 coal mines exist in China, and the three outstanding problems of safety, resource recovery and mining cost, which are faced by the coal industry for a long time, are effectively solved by adopting a 110 construction method.
Due to the excellent large deformation characteristic of the constant-resistance anchor rod, the large deformation control effect for soft rock is remarkable, and the application field is wider and wider. However, the field geological environment is complex and various, the inclination degree change range of the drill hole is large, so that the outer wall surface of the drill hole is not perpendicular to the axis of the drill hole in the construction process, the axial force direction deviates when pretightening force is applied, the large deformation characteristic part of the constant-resistance anchor rod fails, and the effects of engineering reinforcement, control and the like are attenuated.
Therefore, there is a need to provide an improved solution to the above-mentioned deficiencies of the prior art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a drilling inclination self-adaptation's constant resistance stock to solve present traditional constant resistance and warp the stock greatly in the coal mine tunnel, there is drilling outer end wall and drilling axis out of plumb in the installation of tunnel and slope scene is used, leads to traditional constant resistance to warp the unable problem of applying anticipated constant resistance and stress of stock greatly.
In order to achieve the above object, the present invention provides the following technical solutions:
a constant-resistance anchor rod with a self-adaptive drilling inclination comprises a rod body, a constant-resistance device, a spherical bearing plate, an adjusting pad and a nut;
the outer surface of the rod body is provided with a thread structure;
the constant-resistance device is cylindrical, the inner surface of the constant-resistance device is of a threaded structure, and the constant-resistance device is in threaded connection with the rod body and is sleeved at one end part of the rod body;
the spherical bearing plate comprises a flat plate part and a spherical bulge part positioned at the center of the flat plate part, a bearing plate through hole is formed in the center of the spherical bulge part, and the spherical bearing plate penetrates through the bearing plate through hole and is sleeved on the constant resistance device; the wall thickness of the spherical convex part is uniform;
the constant resistance device is provided with an external thread, the thread of the nut is matched with the external thread of the constant resistance device, and the nut is arranged at the end part of the constant resistance device and is positioned above the spherical bearing plate;
the adjusting pad is sleeved on the constant-resistance device and located between the spherical bearing plate and the nut, a first concave spherical surface is arranged at one end face of the adjusting pad, and the first concave spherical surface is in contact fit with the spherical convex part of the spherical bearing plate.
In the drilling slope adaptive constant-resistance anchor rod, preferably, the nut is a spherical nut.
In the constant-resistance anchor rod with the self-adaptive drilling inclination, preferably, a second concave spherical surface is arranged on the other end surface of the adjusting pad, and the second concave spherical surface is in contact fit with the spherical part of the spherical nut.
In the constant-resistance anchor rod with the self-adaptive drilling inclination, preferably, the spherical curvature of the first concave spherical surface is the same as that of the spherical convex part of the spherical bearing plate.
In the constant-resistance anchor rod with the self-adaptive drilling inclination, preferably, the spherical curvature of the second concave spherical surface is the same as that of the spherical part of the spherical nut.
In the constant-resistance anchor rod with the self-adaptive drilling inclination, preferably, the caliber of the first concave spherical surface arranged on the adjusting pad is larger than the caliber of the second concave spherical surface.
In the constant-resistance anchor rod with the self-adaptive drilling inclination, the adjusting pad is preferably made of a metal material.
In the constant-resistance anchor rod with the self-adaptive drilling inclination, preferably, the flat plate part of the spherical bearing plate is square.
Compared with the closest prior art, the utility model provides a technical scheme has following excellent effect:
the utility model discloses a drilling inclination self-adaptation's constant resistance stock can realize automatic aligning, through set up two sphere adjustment pads between loading board and nut, makes three contact site form the hinge connection, can avoid under the condition that the outer wall of drilling is not perpendicular with the drilling axis in the work progress, the problem that the constant resistance stock constant resistance characteristic part became invalid that loading board atress inequality leads to; the device can realize the self-adaptation of the inclination of the drilled hole, and uniformly applies the pretightening force to the spherical bearing plate so as to transmit the pretightening force to the supporting duct piece; the device can be applied to the support of rock masses such as roadways, side slopes, tunnels and the like in the application fields such as water conservancy, traffic, mines, national defense, industrial and civil construction and the like, and effectively plays the excellent characteristics of high constant resistance, large elongation and strong energy absorption of the constant-resistance anchor rod; simple structure, convenient manufacture and construction and is suitable for field processing.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. Wherein:
fig. 1 is a schematic view of an installation structure of a constant resistance anchor rod according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along the direction A-A in FIG. 1, in a state where the spherical bearing plate is not perpendicular to the anchor rod body;
FIG. 3 is a schematic structural view of the spherical nut of FIG. 1;
FIG. 4 is a schematic perspective view of the adjustment pad of FIG. 1;
FIG. 5 is a longitudinal cross-sectional view of FIG. 4;
FIG. 6 is a schematic structural view of the spherical bearing plate of FIG. 1;
fig. 7 is a schematic view of a duct piece structure according to an embodiment of the present invention;
fig. 8 is a schematic structural view of a duct piece provided with a constant-resistance anchor rod according to an embodiment of the present invention;
fig. 9 is a schematic structural view of the constant resistance anchor rod according to the embodiment of the present invention applied in a tunnel.
In the figure: 1. a constant resistance anchor rod; 11. a spherical nut; 12. an adjustment pad; 121. a first concave spherical surface; 122. a second concave spherical surface; 13. a spherical bearing plate; 14. a rod body; 15. a constant resistance device; 2. a duct piece; 3. mounting grooves; 4. and (4) tunneling.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention and do not require that the present invention must be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. The terms "connected" and "connected" used in the present invention should be understood in a broad sense, and may be, for example, either fixed or detachable; they may be directly connected or indirectly connected through intermediate members, and specific meanings of the above terms will be understood by those skilled in the art as appropriate.
As shown in fig. 1-9, according to the utility model discloses an embodiment, the utility model provides a constant resistance stock of drilling inclination self-adaptation, the utility model discloses a supporting field of rock masses such as tunnel, side slope, tunnel can be used to the constant resistance stock relates to application fields such as water conservancy, traffic, mine, national defense and worker civil engineering. In the tunnel 4 work progress as shown in fig. 9, section of jurisdiction 2 that uses in the work progress is prefabricated custom in batches by the precast concrete factory, is provided with mounting groove 3 on the section of jurisdiction 2, the utility model discloses an in the embodiment, mounting groove 3 is the square, and its length of side is 220mm, and mounting groove 3 is used for placing the spherical bearing board 13 of constant resistance stock 1, and the 3 centers of mounting groove are equipped with the through-hole, and the pretightning force is applyed to section of jurisdiction 2 to the constant resistance stock 1 that passes this through-hole and fixes section of jurisdiction 2 at design position.
The constant-resistance anchor rod 1 comprises a rod body 14, a constant-resistance device 15, a spherical bearing plate 13, an adjusting pad 12 and a nut.
The outer surface of the rod body 14 is provided with a thread structure.
The constant resistance device 15 is cylindrical, the inner surface of the constant resistance device 15 is of a threaded structure, and the constant resistance device 15 is in threaded connection with the rod body 14 and is sleeved at one end of the rod body 14.
The spherical bearing plate 13 comprises a flat plate part and a spherical bulge part positioned at the center of the flat plate part, a bearing plate through hole is arranged at the center of the spherical bulge part, and the wall thickness of the spherical bulge part is uniform; the spherical bearing plate 13 is sleeved on the constant resistance device 15 through the bearing plate through hole. Preferably, the spherical bearing plate 13 is the same size as the mounting groove 3 on the segment 2. The mounting groove 3 plays a limiting role in the spherical bearing plate 13, and the fixing in the mounting process is guaranteed.
Preferably, the flat plate part of the spherical bearing plate 13 is square, the lower end face of the square flat plate part is a flat surface, the spherical bearing plate 13 is placed in the mounting groove 3 after passing through the constant resistance device 15 and the rod body 14, the lower end face of the flat plate part of the spherical bearing plate 13 is in flat contact with the groove surface of the mounting groove 3, after the pre-tightening force is applied to the rod body 14, the groove surface of the mounting groove 3 is uniformly stressed, and the balance of the contact stress between the segment 2 and the primary surface of the tunnel 4 is ensured.
The nut is sleeved at the end part of the constant resistance device 15 and is positioned above the spherical bearing plate 13; preferably, the nut is a spherical nut 11.
The center of the adjusting pad 12 is provided with an adjusting pad through hole, the adjusting pad 12 passing through the adjusting pad through hole is sleeved on the constant resistance device 15, and the adjusting pad 12 is arranged between the spherical bearing plate 13 and the nut. Preferably, a first concave spherical surface 121 and a second concave spherical surface 122 are respectively arranged at two end surfaces of the adjusting pad 12; the first concave spherical surface 121 is in contact fit with the spherical convex part of the spherical bearing plate 13; the second concave spherical surface 122 is in contact fit with the spherical portion of the spherical nut 11. Further preferably, the spherical curvature of the first concave spherical surface 121 is the same as the spherical curvature of the spherical convex part of the spherical bearing plate 13. The spherical curvature of the second concave spherical surface 122 is the same as that of the spherical portion of the spherical nut 11.
The material of the adjustment pad 12 is a metal material, and the material of the adjustment pad 12 is preferably Q235 steel.
The adjusting pad 12 is a double-spherical adjusting pad 12, as shown in fig. 4 and 5, the aperture of the first concave spherical surface 121 disposed on the adjusting pad 12 is larger than the aperture of the second concave spherical surface 122, that is, the size of the first concave spherical surface 121 is larger, the size of the second concave spherical surface 122 is smaller, the spherical curvature of the first concave spherical surface 121 is consistent with the convex spherical curvature of the spherical convex part of the spherical bearing plate 13, and it is ensured that the contact engagement of the adjusting pad 12 and the spherical bearing plate 13 is formed by surface contact and hinged connection, so that no matter whether the center of the adjusting pad 12 or the center of the spherical bearing plate 13 is located on the axis of the rod 14, the pre-tightening force can be uniformly applied to the segment 2 through the spherical bearing plate 13.
Preferably, one end of the spherical nut 11 maintains the shape of a conventional nut, and the other end is spherical, and the spherical curvature of the spherical shape is consistent with the spherical curvature of the second concave spherical surface 122 of the adjustment pad 12, so as to ensure that the spherical nut 11 and the adjustment pad 12 form a hinged contact engagement of surface contact.
The contact parts among the spherical nut 11, the double-spherical adjusting pad 12 and the spherical bearing plate 13 are all arranged to be in hinged contact fit, so that the stress of the spherical bearing plate 13 is uniform under the condition that the outer wall surface of the drilled hole and the axis of the drilled hole are not perpendicular in the construction process of the constant-resistance large-deformation anchor rod, the large elongation of the constant-resistance anchor rod 1 is effectively exerted, and the excellent characteristics of strong energy absorption are realized.
During site operation, because the site drilling construction environment is complicated changeable, the construction worker drilling construction level is uneven, comprehensive factors such as system error of rig itself cause the outer wall surface of drilling, the tank bottom surface and the drilling axis out-of-plumb of mounting groove 3 on section of jurisdiction 2 promptly, the axial force that the body of rod 14 receives is out-of-plumb with the tank bottom surface of mounting groove 3 on section of jurisdiction 2, spherical support plate atress is uneven, take place to warp, the axial force of constant resistance stock 1 takes place to deflect, the constant resistance characteristic of constant resistance stock 1 takes place the part failure. And adopt the utility model discloses a self aligning constant resistance large deformation stock replaces traditional constant resistance large deformation stock, section of jurisdiction 2 is applyed the pretightning force through self aligning constant resistance large deformation stock and is fixed, at this moment, no matter whether the stock axial is perpendicular with the tank bottom surface of mounting groove 3, can guarantee mounting groove 3 and spherical loading board 13 level and smooth contact, the even atress of mounting groove 3, stock axial force represents the straight line, thereby guarantee self aligning constant resistance large deformation stock construction site application and reach the laboratory test standard, its high constant resistance of full play, large elongation, the dynamics such as energy-absorbing strength.
Right the utility model discloses a when drilling inclination self-adaptation's constant resistance stock 1 carries out the erection construction, specifically install the operation according to following step:
step one, drilling operation is carried out by adopting a traditional drilling construction process according to the design scheme and construction requirements of a tunnel 4 (a roadway and a side slope), and the hole-forming standard needs to meet the specific requirements of aperture and hole depth;
step two, drilling construction is completed, a rod body 14 with a prefabricated specification is filled in a drill hole, and a resin cartridge or cement slurry is adopted to anchor the anchoring section of the rod body 14; meanwhile, the mounting and splicing work of the duct pieces 2 in the tunnel 4 is carried out, and the duct pieces 2 with specified specifications are selected to be mounted at the design positions according to the design requirements; in the installation process of the duct piece 2, the through hole on the installation groove 3 is ensured to be consistent with the position of a drilling hole, the duct piece 2 is sleeved outside the rod body 14, and the distance between the duct piece 2 and the duct piece 2 meets the specification requirement;
step three, sleeving a constant-resistance device 15 on a rod body 14 through a through hole in a pipe piece 2, mounting a spherical bearing plate 13 on the constant-resistance device 15, penetrating a flat plate part of the spherical bearing plate 13 through the constant-resistance device 15 in advance, and then placing the spherical bearing plate in the mounting groove 3;
fourthly, the first concave spherical surface 121 of the adjusting pad 12 downwards passes through the constant resistance device 15 to reach a position contacting with the spherical bearing plate 13;
and step five, the spherical end of the spherical nut 11 is downwards arranged on the constant resistance device 15 and reaches the position contacted with the adjusting pad 12.
The structure of the installed parts is as shown in fig. 1, the self-aligning constant-resistance large-deformation anchor rod of the utility model can control the application of pre-tightening force and large deformation under the condition that the spherical bearing plate 13 is not perpendicular to the anchor rod body 14, and realize the energy absorption function, as shown in fig. 2; by screwing the spherical nut 11 and applying pretightening force, the self-aligning constant-resistance large-deformation anchor rod with the self-adaptive drilling inclination is mounted.
To sum up, the utility model discloses a drilling inclination self-adaptation's constant resistance stock can realize automatic aligning, through set up two sphere adjustment pads between loading board and nut, makes three contact site form the hinge connection, can avoid in the work progress under the condition that drilling outer end wall is not perpendicular with the drilling axis, the problem that the constant resistance stock constant resistance characteristic part became invalid that the loading board atress inequality leads to; the device can realize the self-adaptation of the inclination of the drilled hole, and uniformly applies the pretightening force to the spherical bearing plate so as to transmit the pretightening force to the supporting duct piece; the device can be applied to the support of rock masses such as roadways, side slopes, tunnels and the like in the application fields such as water conservancy, traffic, mines, national defense, industrial and civil construction and the like, and effectively plays the excellent characteristics of high constant resistance, large elongation and strong energy absorption of the constant-resistance anchor rod; simple structure, convenient manufacture and construction and is suitable for field processing.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A constant-resistance anchor rod with a self-adaptive drilling inclination is characterized by comprising a rod body, a constant-resistance device, a spherical bearing plate, an adjusting pad and a nut;
the outer surface of the rod body is provided with a thread structure;
the constant-resistance device is cylindrical, the inner surface of the constant-resistance device is of a threaded structure, and the constant-resistance device is in threaded connection with the rod body and is sleeved at one end part of the rod body;
the spherical bearing plate comprises a flat plate part and a spherical bulge part positioned at the center of the flat plate part, a bearing plate through hole is formed in the center of the spherical bulge part, and the spherical bearing plate penetrates through the bearing plate through hole and is sleeved on the constant resistance device; the wall thickness of the spherical convex part is uniform;
the constant resistance device is provided with an external thread, the thread of the nut is matched with the external thread of the constant resistance device, and the nut is arranged at the end part of the constant resistance device and is positioned above the spherical bearing plate;
the adjusting pad is sleeved on the constant-resistance device and located between the spherical bearing plate and the nut, a first concave spherical surface is arranged at one end face of the adjusting pad, and the first concave spherical surface is in contact fit with the spherical convex part of the spherical bearing plate.
2. The drilling slope adaptive constant resistance anchor rod of claim 1, wherein the nut is a spherical nut.
3. The drilling slope adaptive constant-resistance anchor rod according to claim 2, wherein a second concave spherical surface is arranged at the other end surface of the adjusting pad, and the second concave spherical surface is in contact fit with the spherical part of the spherical nut.
4. The drilling slope adaptive constant resistance anchor of claim 3, wherein the spherical curvature of the first concave spherical surface is the same as the spherical curvature of the spherical convex portion of the spherical bearing plate.
5. A constant resistance rock bolt according to claim 3 or 4, wherein the spherical curvature of the second concave spherical surface is the same as the spherical curvature of the spherical portion of the spherical nut.
6. The drilling slope adaptive constant resistance anchor rod of claim 5, wherein the caliber of the first concave spherical surface arranged on the adjusting pad is larger than the caliber of the second concave spherical surface.
7. The drilling slope adaptive constant resistance anchor rod of claim 1, wherein the material of the adjusting pad is a metal material.
8. The drilling slope adaptive constant resistance anchor rod of claim 1, wherein the flat plate portion of the spherical bearing plate is square.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921745237.7U CN210858767U (en) | 2019-10-17 | 2019-10-17 | Constant-resistance anchor rod with self-adaptive drilling inclination |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921745237.7U CN210858767U (en) | 2019-10-17 | 2019-10-17 | Constant-resistance anchor rod with self-adaptive drilling inclination |
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| CN210858767U true CN210858767U (en) | 2020-06-26 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302011A (en) * | 2020-09-16 | 2021-02-02 | 中国矿业大学(北京) | Mechanical sensor assembly and NPR anchor cable self-aligning ball head piercing device |
| CN112302060A (en) * | 2020-09-16 | 2021-02-02 | 中国矿业大学(北京) | Mechanical sensor assembly and NPR anchor cable multistage self-aligning ball head core penetrating device |
| US11771183B2 (en) | 2021-12-16 | 2023-10-03 | Joon Bu Park | Negative Poisson's ratio materials for fasteners |
-
2019
- 2019-10-17 CN CN201921745237.7U patent/CN210858767U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302011A (en) * | 2020-09-16 | 2021-02-02 | 中国矿业大学(北京) | Mechanical sensor assembly and NPR anchor cable self-aligning ball head piercing device |
| CN112302060A (en) * | 2020-09-16 | 2021-02-02 | 中国矿业大学(北京) | Mechanical sensor assembly and NPR anchor cable multistage self-aligning ball head core penetrating device |
| US11771183B2 (en) | 2021-12-16 | 2023-10-03 | Joon Bu Park | Negative Poisson's ratio materials for fasteners |
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