CN213743476U - Backing plate assembly and anchor rod assembly - Google Patents
Backing plate assembly and anchor rod assembly Download PDFInfo
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- CN213743476U CN213743476U CN202022573415.1U CN202022573415U CN213743476U CN 213743476 U CN213743476 U CN 213743476U CN 202022573415 U CN202022573415 U CN 202022573415U CN 213743476 U CN213743476 U CN 213743476U
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Abstract
The application provides a backing plate subassembly and stock subassembly relates to ground anchor technique. The shim plate assembly includes a shim plate body and a wedge. The base plate body is provided with a first through hole with a first wedge-shaped surface. The wedge piece has the second wedge face and is used for inserting the second through-hole of stock, and the second wedge face is used for cooperating with first wedge face when the wedge piece inserts first through-hole along the axial of second through-hole. Backing plate subassembly comprises backing plate body and wedge piece, and the extending direction of wedge piece edge first wedge face slides to the radial effort of the outer wall that the backing plate subassembly received turns into the wedge piece to the inner wall of first through-hole, avoids the backing plate subassembly to bear great shear stress, avoids the backing plate subassembly to be caused the backing plate to cut the destruction by axial fracturing. And, backing plate body and wedge produce relative slip, and the backing plate body produces compressive stress to the wedge spare, and the wedge contracts, has increased the mechanical friction to the stock body of rod, has reduced the risk that the wedge drops.
Description
Technical Field
The application relates to the technical field of rock and soil anchoring, in particular to a backing plate assembly and an anchor rod assembly.
Background
The anchor rod can improve the continuity of the surrounding rock, increase the shearing strength of the surrounding rock and improve the self-stability of the surrounding rock. In recent years, anchor rods have been used in tunnel construction on a large scale. The traditional steel anchor rod has the defect of easy corrosion, so that the durability of the steel anchor rod is poor, and the long-term stability and safety of a tunnel structure are seriously influenced; the disadvantage of heavy weight increases the transportation cost and the construction and installation cost. The steel anchor rod which is not subjected to the anti-corrosion treatment is not suitable for permanent support due to the defects of the steel anchor rod.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a backing plate assembly and an anchor rod assembly to improve the problem that the shearing resistance of a fiber composite material is not high.
In a first aspect, embodiments of the present application provide a shim plate assembly including a shim plate body and a wedge. The base plate body is provided with a first through hole with a first wedge-shaped surface. The wedge piece has the second wedge face and is used for inserting the second through-hole of stock, and the second wedge face is used for cooperating with first wedge face when the wedge piece inserts first through-hole along the axial of second through-hole.
Among the above-mentioned technical scheme, the backing plate subassembly comprises backing plate body and wedge piece, after the wedge piece inserts first through-hole, first wedge surface and the cooperation of second wedge surface, after the stock work that inserts the second through-hole, the stock receives axial tension after, make the extending direction of wedge piece along first wedge surface slide, and the axial effort that the backing plate subassembly received turns into the radial effort of the outer wall of wedge piece to the inner wall of first through-hole, avoid the backing plate subassembly to bear great shear stress, avoid the backing plate subassembly to be caused the backing plate to cut to destroy by axial fracturing. And, backing plate body and wedge produce relative slip, and the backing plate body produces compressive stress to the wedge spare, and the wedge contracts, has increased the mechanical friction to the stock body of rod, has reduced the risk that the wedge drops.
In addition, the tie plate assembly of the embodiment of the first aspect of the present application has the following additional technical features:
in some embodiments of the first aspect of the present application, the first through-hole comprises a conical hole section, and the first wedge surface is an inner surface of the conical hole section.
Among the above-mentioned technical scheme, first wedge face is the internal surface of taper hole section for when the wedge piece inserted first through-hole along the axial of second through-hole, need not fix a position the relative position of first wedge face and second wedge face, reduce the installation degree of difficulty.
In some embodiments of the first aspect of the present application, the first through-hole further comprises a cylindrical hole section, the cylindrical hole section communicating with the conical hole section, the cylindrical hole section being connected with the small end of the conical hole section.
Among the above-mentioned technical scheme, be connected with the cylinder hole section at the tip of circular cone hole section, when first wedge face and second wedge face cooperation make the relative first wedge face of wedge piece slide, first through-hole can provide sufficient removal space in the axial for the backing plate subassembly can bear less shear stress all the time.
In some embodiments of the present application, the backing plate body includes a first cylindrical section and a circular truncated cone section, the first cylindrical section is connected to a small end of the circular truncated cone section, and the first through hole penetrates through the first cylindrical section and the circular truncated cone section.
Among the above-mentioned technical scheme, set up the backing plate body into the step form, under the less circumstances of assurance backing plate body consumptive material for the backing plate body has comparable thickness size, makes the backing plate body have stronger ability of shearing.
In some embodiments of the present application, the diameter of the first cylindrical section may be the same diameter or a tapered diameter (i.e., a frustoconical opening) as the small end of the frustoconical section.
Among the above-mentioned technical scheme, the diameter of first cylinder section is the same with the diameter of the tip of round platform section for the connection position size phase-match of first cylinder section and round platform section, in order to guarantee good joint strength.
In some embodiments of the first aspect of the present application, the shim plate body further comprises a second cylindrical section connected to the large end of the circular truncated cone section.
Among the above-mentioned technical scheme, the thickness of backing plate body can be increased in the setting of second cylinder section, further improves the ability of shearing of backing plate body.
In some embodiments of the first aspect of the present application, the diameter of the second cylindrical section is the same as the diameter of the large end of the frustum section.
Among the above-mentioned technical scheme, the diameter of second cylinder section is the same with the diameter of the main aspects of round platform section for the connection position size phase-match of second cylinder section and round platform section guarantees good joint strength.
In some embodiments of the first aspect of the present application, the second through hole is a threaded hole.
Among the above-mentioned technical scheme, the second through-hole is the screw hole, and the stock of being convenient for is connected with the backing plate subassembly to improve joint strength and the mechanics bearing capacity of stock.
In some embodiments of the first aspect of the present application, the material of the caul plate body comprises a basalt fiber-reinforced material.
Among the above-mentioned technical scheme, basalt fiber muscle material is that tensile strength is strong, the ability weak material that shears, and the setting up of the first wedge face and the second wedge face of backing plate subassembly makes the shear stress conversion that the wedge produced the backing plate body for tensile stress, very big reduction the inside shear stress of backing plate body, full play basalt fiber muscle's tensile property. And backing plate body and wedge produce relative slip, and the backing plate body produces compressive stress to the wedge spare, and the wedge contracts, has increased the mechanical friction to the stock body of rod, has reduced the risk that the wedge drops.
In a second aspect, embodiments of the present application provide a bolt assembly, including a bolt and the tie plate assembly provided in the first aspect, the bolt being capable of being inserted into the second through hole of the wedge.
Among the above-mentioned technical scheme, when the stock is inserted and is located second through-hole and during operation, the stock receives axial force to the wedge piece behind the axial tension for the wedge piece slides along the extending direction of first wedge face, and the axial force that the wedge piece received turns into the radial effort of the outer wall of wedge piece to the inner wall of first through-hole, avoids the backing plate subassembly to bear great shear stress, avoids the backing plate subassembly to be caused backing plate shear failure by axial fracturing. And, backing plate body and wedge produce relative slip, and the backing plate body produces compressive stress to the wedge spare, and the wedge contracts, has increased the mechanical friction to the stock body of rod, has reduced the risk that the wedge drops.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a schematic view of a dunnage assembly provided in accordance with an embodiment of the present application;
FIG. 2 is a schematic view of the shim plate body of FIG. 1;
FIG. 3 is a schematic view of a first shim plate body according to other embodiments;
FIG. 4 is a schematic view of a second shim plate body according to other embodiments;
FIG. 5 is a schematic view of the wedge of FIG. 1;
fig. 6 is a schematic view of a bolt assembly provided in an embodiment of the present application;
fig. 7 is a schematic view of the anchor assembly attached to the surrounding rock.
Icon: 100-a shim plate assembly; 10-a pad body; 11-a first via; 111-a conical bore section; 112-a first wedge-facet; 113-a cylindrical bore section; 12-a first cylindrical section; 13-a circular table section; 14-a second cylindrical section; 20-a wedge; 21-a second wedge-facet; 22-a second via; 1000-an anchor assembly; 200-anchor rod; 2000-surrounding rock; 3000-grouting layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present application, it should be noted that the indication of orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which is usually placed when the product of the application is used, or the orientation or positional relationship which is usually understood by those skilled in the art, or the orientation or positional relationship which is usually placed when the product of the application is used, and is only for the convenience of describing the application and simplifying the description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Examples
As shown in fig. 1, the present embodiment provides a tie plate assembly 100 including a tie plate body 10 and a wedge 20. The shim plate body 10 is provided with a first through hole 11 having a first wedge surface 112. The wedge member 20 has a second wedge surface 21 and a second through hole 22 for inserting the anchor 200, and the second wedge surface 21 is adapted to be engaged with the first wedge surface 112 when the wedge member 20 is inserted into the first through hole 11 in the axial direction of the second through hole 22.
The backing plate assembly 100 is composed of a backing plate body 10 and a wedge member 20, after the wedge member 20 is inserted into the first through hole 11, the first wedge surface 112 and the second wedge surface 21 are matched, after the anchor rod inserted into the second through hole 22 works, the anchor rod receives axial acting force to the backing plate assembly 100 after axial tension, so that the wedge member 20 slides along the extending direction of the first wedge surface 112, and the axial acting force received by the backing plate assembly 100 is converted into radial acting force of the outer wall of the wedge member 20 to the inner wall of the first through hole 11, the backing plate assembly 100 is prevented from bearing large shear stress, and the backing plate assembly 100 is prevented from being sheared and damaged by the backing plate body 10 caused by axial fracturing. And, the backing plate body 10 and the wedge 20 produce relative slip, and the backing plate body 10 produces compressive stress to the wedge 20, and the wedge 20 contracts, has increased the mechanical friction to the stock body of rod, has reduced the risk that wedge 20 drops.
In the present embodiment, as shown in fig. 1 and 2, the first through hole 11 penetrates through the upper and lower sides of the pad body 10. The first through hole 11 comprises a conical hole section 111, and the first wedge surface 112 is an inner surface of the conical hole section 111, so that when the wedge member 20 is inserted into the first through hole 11 along the axial direction of the second through hole 22, the relative positions of the first wedge surface 112 and the second wedge surface 21 are not required to be positioned, and the installation difficulty is reduced.
The first through hole 11 further comprises a cylindrical hole section 113, the cylindrical hole section 113 is communicated with the conical hole section 111, the cylindrical hole section 113 is connected with the small end of the conical hole section 111, and the diameter of the small end of the conical hole section 111 is directly the same as that of the cylindrical hole section 113. A cylindrical hole section 113 is connected to the small end of the conical hole section 111, and when the first wedge surface 112 and the second wedge surface 21 are matched to make the wedge 20 slide relative to the first wedge surface 112, the first through hole 11 can provide enough moving space in the axial direction, so that the cushion plate assembly 100 can bear smaller shearing stress all the time.
In other embodiments, as shown in fig. 3, the first through hole 11 may also include only the conical hole section 111.
In other embodiments, the first through hole 11 may have other structures, as shown in fig. 4, the first wedge-shaped surface 112 is a part of an inner wall of the first through hole 11, and another part of the inner wall of the first through hole 11 is an arc-shaped wall. Accordingly, the second wedge-face 21 of the wedge 20 is a structure adapted to the first wedge-face 112.
The backing plate body 10 comprises a first cylindrical section 12 and a circular truncated cone section 13, the first cylindrical section 12 is connected to the small end of the circular truncated cone section 13, the first cylindrical section 12 and the circular truncated cone section 13 form a first-level step, the backing plate body 10 is arranged in a step form, the situation that consumable materials of the backing plate body 10 are less is guaranteed, the backing plate body 10 is enabled to have a considerable thickness size, and the backing plate body 10 is enabled to have strong shearing resistance.
The diameter of the first cylindrical section 12 is the same as that of the small end of the circular truncated cone section 13, so that the size of the connecting part of the first cylindrical section 12 and the circular truncated cone section 13 is matched, and good connecting strength is guaranteed.
In other embodiments, the diameter of the first cylindrical section 12 and the diameter of the small end of the frustum section 13 may also be different, such as the diameter of the first cylindrical section 12 is larger than the diameter of the small end of the frustum section 13; the diameter of the first cylindrical section 12 is smaller than the diameter of the small end of the circular truncated cone section 13.
Further, the pad body 10 further includes a second cylindrical section 14, and the second cylindrical section 14 is connected to the large end of the circular truncated cone section 13, that is, the circular truncated cone section 13 is located between the first cylindrical section 12 and the second cylindrical section 14. The arrangement of the second cylindrical section 14 can increase the thickness of the pad body 10, and further improve the shearing resistance of the pad body 10. In this embodiment, the diameter of the second cylindrical section 14 is the same as the diameter of the large end of the circular truncated cone section 13, so that the size of the connection part between the second cylindrical section 14 and the circular truncated cone section 13 is matched to ensure good connection strength.
In the present embodiment, the large end of the conical hole section 111 of the first through hole 11 is located on and penetrates through the side of the first cylindrical section 12 away from the circular truncated cone section 13, and the end of the cylindrical hole section 113 of the first through hole 11 away from the conical hole section 111 is located on and penetrates through the side of the second cylindrical section 14 away from the circular truncated cone section 13.
In other embodiments, the diameter of the second cylindrical section 14 may be different from the diameter of the large end of the frustum section 13, for example, the diameter of the second cylindrical section 14 is smaller than the diameter of the large end of the frustum section 13; as another example, the diameter of the second cylindrical section 14 is greater than the diameter of the large end of the circular truncated cone section 13.
Of course, the shim plate body 10 may also comprise only the first cylindrical section 12 and the frustum section 13.
In other embodiments, the pad body 10 may be in other forms, for example, the pad body 10 is a circular plate, a square plate, or the like.
In the present embodiment, as shown in fig. 5, the wedge member 20 has a truncated cone shape, and the second wedge surface 21 is an outer surface of the wedge member 20. The small end of the wedge member 20 is inserted into the first through hole 11 from the large end of the first through hole 11 so that the first wedge surface 112 and the second wedge surface 21 are engaged. The second through hole 22 extends in the axial direction of the wedge 20, and the second through hole 22 is a threaded hole to facilitate the connection of the threaded section of the anchor rod 200 with the shim plate assembly 100, so as to improve the connection strength and mechanical endurance of the anchor rod 200.
In the present embodiment, the material of the pad body 10 includes a basalt fiber rib material. The basalt fiber bar material is a material with strong tensile strength and weak shearing resistance, compared with steel, the basalt fiber bar has the characteristics of good bonding property with cement concrete, electric insulation, non-magnetism, acid resistance, alkali resistance, corrosion resistance, light specific gravity, high strength, continuous reinforcement without welding and intelligent composite optical fiber, and is an ideal material for manufacturing the anchor rod 200 and the base plate body 10. Tensile strength of basalt fiber reinforcements is generally about 2-3 times of that of reinforcing steel bars, but shearing resistance is poor, and in the using process, a base plate is easily sheared and damaged, so that an anchor rod fails. Therefore, the arrangement of the first wedge-shaped surface 112 and the second wedge-shaped surface 21 of the pad board assembly 100 enables the shear stress generated by the wedge 20 on the pad board body 10 to be converted into the tensile stress, greatly reduces the shear stress inside the pad board body 10, and fully exerts the tensile property of the basalt fiber bar. And the backing plate body 10 and the wedge 20 produce relative slip, and the backing plate body 10 produces compressive stress to the wedge 20, and the wedge 20 contracts, has increased the mechanical friction to the stock 200 body, has reduced the risk that the wedge 20 drops. The bearing plate body 10 for sampling the basalt fiber rib material is simple in structure, simple in manufacturing work, low in manufacturing cost, simple and convenient to install, capable of effectively utilizing material characteristics, and capable of reducing influence of material defects on engineering.
As shown in fig. 6 and 7, the present application also provides a rock bolt assembly 1000, wherein the rock bolt assembly 1000 comprises a rock bolt 200 and the shim plate assembly 100 provided in the first aspect, and the rock bolt 200 can be inserted into the second through hole 22 of the wedge 20. The anchor rod 200 is inserted into the second through hole 22 and works, axial acting force of the anchor rod 200 on the wedge-shaped member 20 after being subjected to axial tension enables the wedge-shaped member 20 to slide along the extending direction of the first wedge surface 112, and the axial acting force applied to the wedge-shaped member 20 is converted into radial acting force of the outer wall of the wedge-shaped member 20 on the inner wall of the first through hole 11, so that the backing plate assembly 100 is prevented from bearing large shearing stress, and the backing plate assembly 100 is prevented from being damaged by shearing of the backing plate due to axial fracturing. And, the backing plate body 10 and the wedge 20 produce relative slip, and backing plate body 10 produces compressive stress to wedge 20, and wedge 20 contracts, has increased the mechanical friction to the stock 200 body, has reduced the risk that wedge 20 drops.
In the actual use process, the anchor rod 200 is firstly inserted into a hole drilled in the surrounding rock 2000, grouting is performed between the outer wall of the anchor rod 200 and the surrounding rock 2000 to form a grouting layer 3000, and the grouting layer 3000 can be cement mortar or cement paste, so that the surrounding rock 2000 and the anchor rod 200 are stably connected into a whole. After grouting, the pad body 10 is directly sleeved outside the rod body of the anchor rod 200 through the first through hole 11, and the wedge 20 is rotated into alignment with the end of the rod body of the anchor rod 200 until contacting with the first wedge surface 112 and the second wedge surface 21 and generating a certain pre-pressure. When the country rock 2000 produces the deformation, wedge 20 can produce relative motion with the backing plate body 10 and wedge 20 will move to the cylinder bore section 113 and move, can produce the pressure to first wedge-face 112 by second wedge-face 21 simultaneously, and this pressure makes the tendency of outside expansion appear in the backing plate body 10, and the pulling force between the inside material of backing plate body 10 then can resist this trend to make full use of material tensile strength, the backing plate then can make the wedge nut shrink to the reaction force of wedge nut, increases the bond strength.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A dunnage assembly, comprising:
the base plate comprises a base plate body, wherein the base plate body is provided with a first through hole with a first wedge-shaped surface; and
the wedge piece is provided with a second wedge surface and a second through hole for inserting the anchor rod, and the second wedge surface is used for being matched with the first wedge surface when the wedge piece is inserted into the first through hole along the axial direction of the second through hole.
2. The dunnage assembly of claim 1, wherein the first through-hole comprises a conical hole section, and the first wedge surface is an inner surface of the conical hole section.
3. The dunnage assembly of claim 2, wherein the first through-hole further comprises a cylindrical hole section, the cylindrical hole section being in communication with the conical hole section, the cylindrical hole section being connected with a small end of the conical hole section.
4. The dunnage assembly of claim 1, wherein the dunnage body comprises a first cylindrical section and a frustum section, the first cylindrical section being connected to a small end of the frustum section.
5. The dunnage assembly of claim 4, wherein the diameter of the first cylindrical section is the same as the diameter of the small end of the circular truncated cone section.
6. The dunnage assembly of claim 4, wherein the dunnage body further comprises a second cylindrical section connected to a large end of the frustum section.
7. The dunnage assembly of claim 6, wherein the diameter of the second cylindrical section is the same as the diameter of the large end of the frustum section.
8. The dunnage assembly of claim 1, wherein the second through-hole is a threaded hole.
9. The dunnage assembly of claim 1, wherein the material of the dunnage body comprises a basalt fiber material.
10. A rock bolt assembly comprising a rock bolt and a shim plate assembly according to any one of claims 1 to 9, the rock bolt being insertable through the second through hole of the wedge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022573415.1U CN213743476U (en) | 2020-11-09 | 2020-11-09 | Backing plate assembly and anchor rod assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022573415.1U CN213743476U (en) | 2020-11-09 | 2020-11-09 | Backing plate assembly and anchor rod assembly |
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| Publication Number | Publication Date |
|---|---|
| CN213743476U true CN213743476U (en) | 2021-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022573415.1U Active CN213743476U (en) | 2020-11-09 | 2020-11-09 | Backing plate assembly and anchor rod assembly |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115898494A (en) * | 2022-11-24 | 2023-04-04 | 宁波大学 | High-elongation basalt fiber anti-corrosion anchor cable and supporting method thereof |
-
2020
- 2020-11-09 CN CN202022573415.1U patent/CN213743476U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115898494A (en) * | 2022-11-24 | 2023-04-04 | 宁波大学 | High-elongation basalt fiber anti-corrosion anchor cable and supporting method thereof |
| CN115898494B (en) * | 2022-11-24 | 2023-09-08 | 宁波大学 | High-elongation basalt fiber anti-corrosion anchor cable and supporting method thereof |
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