CN216950439U - Sectional type lengthening anchoring device for soft top plate - Google Patents
Sectional type lengthening anchoring device for soft top plate Download PDFInfo
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- CN216950439U CN216950439U CN202220756807.8U CN202220756807U CN216950439U CN 216950439 U CN216950439 U CN 216950439U CN 202220756807 U CN202220756807 U CN 202220756807U CN 216950439 U CN216950439 U CN 216950439U
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Abstract
The utility model discloses a sectional type lengthened anchoring device for a soft top plate, which comprises a fixed anchor cable, a first bearing tray, a bearing connecting pipe, an anchor body and a second bearing tray, wherein the first bearing tray is arranged on the first bearing tray; the fixed anchor cable, the first bearing tray and the bearing connecting pipe are matched with each other to form a first subsection anchoring process, so that the surrounding rock with the stable top plate and the deep surrounding rock are anchored and fixed, the bearing capacity and stability of the surrounding rock of the section are improved, and the loss of pre-tightening force is reduced; then through bearing connecting pipe, anchor body and the mutual cooperation of second bearing tray, form second segmentation anchor process, because first segmentation has already carried out anchor to both the more stable country rock of roof and deep country rock, consequently the anchor body passes the roof country rock when the anchor of second segmentation, therefore the anchor body mainly bears the dead weight of this section of country rock, bears the weight of and is less, need not great pretightning force, has reduced the shearing destruction possibility of this anchor body to the roof surface. And the longer support length can be effectively ensured by the segmentation mode.
Description
Technical Field
The utility model relates to a lengthened anchoring device, in particular to a soft top plate sectional type lengthened anchoring device.
Background
The anchor rod and cable support is a main measure for supporting the roadway, achieves the effect of controlling the deformation of surrounding rocks by applying active supporting force to the surrounding rocks of the roadway, and has better supporting effect under general geological conditions. However, in weak surrounding rocks of roadways, phenomena of incapability of anchoring and large deformation often occur, and the safety risk of underground construction is increased. In order to solve the problems, the supporting effect of the anchor rod and the cable supporting body in the soft edge roadway top plate is improved, an elongated anchor cable is developed in the industry, the roadway surface surrounding rock is anchored to the deeper stable surrounding rock, and a certain effect is achieved in engineering practice. However, the surface shear strength of the soft rock top plate is small, and larger pre-tightening force is difficult to apply, the existing lengthened anchor cable structure is not beneficial to combining all rock layers of the top plate, and the longer supporting length causes serious pre-tightening force loss, so that the supporting effect is not good, so how to provide a device can effectively increase the anchoring strength and reduce the pre-tightening force loss on the premise of ensuring the longer supporting length, thereby improving the supporting effect is one of the research directions of the industry.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model provides the sectional type lengthened anchoring device for the soft top plate, which can effectively increase the anchoring strength and reduce the loss of pretightening force on the premise of ensuring longer supporting length, thereby improving the supporting effect.
In order to achieve the purpose, the utility model adopts the technical scheme that: a sectional type lengthened anchoring device for a soft top plate comprises a fixed anchor cable, a first bearing tray, a bearing connecting pipe, an anchor body and a second bearing tray;
the bearing connecting pipe comprises an upper connecting pipe, a lower connecting pipe and a bearing boss, the upper connecting pipe and the lower connecting pipe are both hollow pipes, the bearing boss is in a disc shape, the center of the bearing boss is provided with a through hole, the center of the bearing boss is coaxially and fixedly connected with the upper end of the upper connecting pipe, and the end face of the bearing boss is perpendicular to the axis of the upper connecting pipe; an annular pre-tightening force loading boss is arranged on the inner wall of the lower connecting pipe, and bearing pipe connecting threads are formed on the inner wall of the lower connecting pipe above the annular pre-tightening force loading boss and the outer surface, close to the lower end, of the upper connecting pipe; a round hole is formed in the center of the first bearing tray, and the diameter of the round hole is equal to the outer diameter of the upper connecting pipe and smaller than the outer diameter of the bearing boss and the outer diameter of the lower connecting pipe; the lower end of the upper connecting pipe penetrates through the round hole of the first bearing tray and is inserted into the upper end of the lower connecting pipe, and the upper connecting pipe is fixedly connected with the lower connecting pipe through a bearing pipe connecting thread;
one end of the fixed anchor cable is provided with a connecting thread, and the aperture of the through hole in the center of the annular pre-tightening force loading boss is larger than the outer diameter of the fixed anchor cable and smaller than the outer diameter of the anchor cable pre-tightening nut; one end of the fixed anchor cable sequentially penetrates through the bearing boss, the upper connecting pipe and the annular pre-tightening force loading boss to extend into the lower connecting pipe, the anchor cable pre-tightening nut is positioned in the lower connecting pipe and below the annular pre-tightening force loading boss, and the anchor cable pre-tightening nut is fastened with one end of the extended fixed anchor cable in a threaded manner;
one end of the anchor body extends into the lower connecting pipe from the lower end of the lower connecting pipe and is fixedly connected with the inner wall of the lower connecting pipe through an anchoring agent to form an anchoring section; the other end of the anchor body penetrates through a round hole of the second bearing tray and is tightly pressed and fixed with the second bearing tray through a locking nut.
Further, the maximum bearing capacity of each of the bearing boss and the first bearing tray is larger than that of the fixed anchor cable; the maximum tensile strength of the lower connecting pipe is greater than that of the anchor body. By setting the parameters, the stability of the device in the anchoring process can be effectively ensured, and the supporting effect of the device is better realized.
Further, the anchor body is an anchor rod or an anchor cable.
Compared with the prior art, the utility model adopts a combination mode of the fixed anchor cable, the first bearing tray, the bearing connecting pipe, the anchor body and the second bearing tray, wherein the fixed anchor cable, the first bearing tray and the bearing connecting pipe are mutually matched to form a first subsection anchoring process, thereby realizing anchoring and fixing the surrounding rock with a relatively stable top plate and the deep surrounding rock, improving the bearing capacity and stability of the surrounding rock of the section and reducing the loss of pretightening force; then through bearing the weight of connecting pipe, anchor body and second and bearing the weight of tray and mutually supporting, form second segmentation anchor process, because first segmentation has already carried out anchor to both the more stable country rock of roof and deep country rock, consequently the anchor body passes the roof country rock when the anchor of second segmentation, consequently the dead weight of this section of country rock is mainly born to the anchor body, bears the weight lessly, need not great pretightning force, has reduced the shearing destruction possibility of this anchor body to the roof surface. And the long supporting length can be effectively ensured by the sectional mode.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention after assembly;
fig. 2 is a schematic view of the construction of the anchor cable of the present invention;
FIG. 3 is a schematic illustration of a split connection of the present invention;
fig. 4 is a schematic structural view of the anchor cable pretension nut of the present invention.
In the figure: 1-fixing anchor cable, 101-connecting thread, 2-first bearing tray, 3-bearing connecting pipe, 4-anchoring section, 5-anchoring body, 6-second bearing tray, 301-upper connecting pipe, 302-lower connecting pipe, 303-bearing boss, 304-bearing pipe connecting thread, 305-annular pre-tightening force loading boss and 7-pre-tightening anchor cable nut.
Detailed Description
The present invention will be further explained below.
As shown in fig. 1, the upper side of fig. 1 is taken as the upper side to describe, the present invention includes a fixed anchor cable 1, a first bearing tray 2, a bearing connecting pipe 3, an anchor body 5 and a second bearing tray 6;
as shown in fig. 3, the bearing connecting pipe 3 includes an upper connecting pipe 301, a lower connecting pipe 302 and a bearing boss 303, both the upper connecting pipe 301 and the lower connecting pipe 302 are hollow pipes, the bearing boss 303 is a disc with a through hole at the center, the center of the bearing boss 303 is coaxially and fixedly connected with the upper end of the upper connecting pipe 301, and the end surface of the bearing boss 303 is perpendicular to the axis of the upper connecting pipe 301; an annular pretightening force loading boss 305 is arranged on the inner wall of the lower connecting pipe 302, and bearing pipe connecting threads 304 are formed on the inner wall of the lower connecting pipe 302 above the annular pretightening force loading boss 305 and the outer surface of the upper connecting pipe 301 close to the lower end of the lower connecting pipe; a round hole is formed in the center of the first bearing tray 2, and the diameter of the round hole is equal to the outer diameter of the upper connecting pipe 301 and is smaller than the outer diameter of the bearing boss 303 and the outer diameter of the lower connecting pipe 302; the lower end of the upper connecting pipe 301 passes through the circular hole of the first bearing tray 2 and is inserted into the upper end of the lower connecting pipe 302, and the lower connecting pipe 302 is fixedly connected with the bearing pipe connecting thread 304;
as shown in fig. 2 and 4, one end of the fixed anchor cable 1 is provided with a connecting thread 101, and the aperture of the through hole at the center of the annular pre-tightening force loading boss 305 is larger than the outer diameter of the fixed anchor cable 1 and smaller than the outer diameter of the anchor cable pre-tightening nut 7; one end of the fixed anchor cable 1 sequentially penetrates through the bearing boss 303, the upper connecting pipe 301 and the annular pre-tightening force loading boss 305 to extend into the lower connecting pipe 302, the anchor cable pre-tightening nut 7 is positioned in the lower connecting pipe 302 and below the annular pre-tightening force loading boss 305, and the anchor cable pre-tightening nut 7 is fastened with one end of the extended fixed anchor cable 1 through threads;
one end of the anchor body 5 extends into the lower connecting pipe 302 from the lower end of the lower connecting pipe 302 and is fixedly connected with the inner wall of the lower connecting pipe 302 through an anchoring agent to form an anchoring section 4; the other end of the anchor body 5 passes through a round hole of the second bearing tray 6 and is tightly pressed and fixed with the second bearing tray 6 through a locking nut; the anchor body 5 is an anchor rod or an anchor cable.
As an improvement of the present invention, the maximum bearing capacity of each of the bearing boss 303 and the first bearing tray 2 is greater than the maximum bearing capacity of the fixed anchor cable 1; the maximum tensile strength of the lower connecting tube 302 is greater than the maximum tensile strength of the anchor body 5. By setting the parameters, the stability of the device in the anchoring process can be effectively ensured, and the supporting effect of the device is better realized.
When the anchor cable pre-tightening device works, the lower end of an upper connecting pipe 301 penetrates through a circular hole of a first bearing tray 2 to be inserted into the upper end of a lower connecting pipe 302 to be fixedly connected with the lower connecting pipe 302 through a bearing pipe connecting thread 304, then the other end of a fixed anchor cable 1 is anchored into deep surrounding rock, one end of the fixed anchor cable 1 is positioned outside one side of the top plate surrounding rock and sequentially penetrates through a bearing boss 303, the upper connecting pipe 301 and an annular pre-tightening force loading boss 305 to extend into the lower connecting pipe 302, then an anchor cable pre-tightening nut 7 in the lower connecting pipe 302 is driven by an anchor cable machine to be in threaded connection with one end of the extended fixed anchor cable 1, the top of the anchor cable pre-tightening nut 7 is in contact with the lower part of the annular pre-tightening force loading boss 305 along with the rotation of the anchor cable pre-tightening nut 7, then the anchor cable pre-tightening nut 7 is continuously rotated to apply pressure to the annular pre-tightening force loading boss 305, so that the bearing boss 303 and the first bearing tray 2 are tightly pressed, and the fixed anchor cable 1 is applied with pre-tightening force, when the pre-tightening force reaches a set value, stopping the rotation of the anchor cable pre-tightening nut 7 to complete the anchoring process of the first section, so that the top plate is anchored with the surrounding rock at the deep part stably;
then, the anchoring agent is put into the lower connecting pipe 302 from the lower end of the lower connecting pipe 302, and then one end of the anchor body 5 extends into the lower connecting pipe 302 from the lower end of the lower connecting pipe 302 and is fixedly connected with the inner wall of the lower connecting pipe 302 through the anchoring agent to form an anchoring section 4; the other end of the anchor body 5 penetrates out of one side of the surrounding rock of the top plate to the other side and penetrates through the round hole of the second bearing tray 6, so that the second bearing tray 6 is tightly pressed on the other side of the surrounding rock of the top plate through the locking nut, meanwhile, a certain pre-tightening force is applied through the locking nut, the anchoring process of the second section is completed, and supporting and anchoring of the surrounding rock of the surface of the top plate are achieved. The first subsection anchoring and the second subsection anchoring are combined, so that the supporting effect on the whole weak top plate is achieved.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the utility model and these are intended to be within the scope of the utility model.
Claims (3)
1. A sectional type lengthened anchoring device for a soft top plate is characterized by comprising a fixed anchor cable, a first bearing tray, a bearing connecting pipe, an anchor body and a second bearing tray;
the bearing connecting pipe comprises an upper connecting pipe, a lower connecting pipe and a bearing boss, the upper connecting pipe and the lower connecting pipe are both hollow pipes, the bearing boss is in a disc shape, the center of the bearing boss is provided with a through hole, the center of the bearing boss is coaxially and fixedly connected with the upper end of the upper connecting pipe, and the end face of the bearing boss is perpendicular to the axis of the upper connecting pipe; an annular pre-tightening force loading boss is arranged on the inner wall of the lower connecting pipe, and bearing pipe connecting threads are formed on the inner wall of the lower connecting pipe above the annular pre-tightening force loading boss and the outer surface, close to the lower end, of the upper connecting pipe; a round hole is formed in the center of the first bearing tray, and the diameter of the round hole is equal to the outer diameter of the upper connecting pipe and smaller than the outer diameter of the bearing boss and the outer diameter of the lower connecting pipe; the lower end of the upper connecting pipe penetrates through the round hole of the first bearing tray and is inserted into the upper end of the lower connecting pipe, and the upper connecting pipe is fixedly connected with the lower connecting pipe through a bearing pipe connecting thread;
one end of the fixed anchor cable is provided with a connecting thread, and the aperture of the through hole in the center of the annular pre-tightening force loading boss is larger than the outer diameter of the fixed anchor cable and smaller than the outer diameter of the anchor cable pre-tightening nut; one end of the fixed anchor cable sequentially penetrates through the bearing boss, the upper connecting pipe and the annular pre-tightening force loading boss to extend into the lower connecting pipe, the anchor cable pre-tightening nut is positioned in the lower connecting pipe and below the annular pre-tightening force loading boss, and the anchor cable pre-tightening nut is fastened with one end of the extended fixed anchor cable in a threaded manner;
one end of the anchor body extends into the lower connecting pipe from the lower end of the lower connecting pipe and is fixedly connected with the inner wall of the lower connecting pipe through an anchoring agent to form an anchoring section; the other end of the anchor body penetrates through a round hole of the second bearing tray and is tightly pressed and fixed with the second bearing tray through a locking nut.
2. The segmented lengthening anchoring device for the weak roof as claimed in claim 1, wherein the maximum bearing capacity of each of the bearing boss and the first bearing tray is greater than the maximum bearing capacity of the fixed anchor cable; the maximum tensile strength of the lower connecting pipe is greater than that of the anchor body.
3. The segmented lengthened anchor device for the weak roof as claimed in claim 1, wherein the anchor body is an anchor rod or an anchor cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220756807.8U CN216950439U (en) | 2022-04-01 | 2022-04-01 | Sectional type lengthening anchoring device for soft top plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220756807.8U CN216950439U (en) | 2022-04-01 | 2022-04-01 | Sectional type lengthening anchoring device for soft top plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216950439U true CN216950439U (en) | 2022-07-12 |
Family
ID=82302064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220756807.8U Active CN216950439U (en) | 2022-04-01 | 2022-04-01 | Sectional type lengthening anchoring device for soft top plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216950439U (en) |
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2022
- 2022-04-01 CN CN202220756807.8U patent/CN216950439U/en active Active
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