Anchoring base plate and hollow grouting anchor cable supporting device

Abstract

The utility model provides an anchoring base plate and a hollow grouting anchor cable supporting device, which can form a supporting network by taking the anchoring base plate as a node, can verify the assembly compliance of the anchoring base plate before grouting, and can enhance the supporting effect after grouting so as to ensure the safety of an anchoring system. The anchoring base plate comprises a base plate body, connecting braces and connecting plates, four corners of the base plate body are arc corners, assembling grooves are formed in the middles of the arc corners, and first hinge hole positions are formed in the arc corners; one end of the connecting brace is a flat head, a second hinge hole site is formed in the flat head, and the flat head is inserted into the assembling groove and connected to the connecting brace and the base plate body through a fixing pin, so that the connecting brace can rotate based on the base plate body; a fixing piece is hinged to the other end of the connecting brace; the connecting plate is provided with one or more connecting point positions, and the fixing pieces of the adjacent anchoring base plates are connected with the connecting plate, so that the connecting brace, the base plate body and the connecting plate form a triangular or isosceles trapezoid network structure.

Description

Technical Field

[0001] The utility model relates to the field of prestressed anchorages, and more specifically, to an anchoring backing plate and a hollow grouting cable bolt support device. Background Art

[0002] In prestressed construction, there are many factors affecting the safety of the anchorage area. Such as the tensioning construction method, the reinforcement arrangement method in the anchorage area, the performance of the anchor backing plate, etc. However, the failure of the anchor backing plate is one of the "common diseases" in the construction of prestressed concrete structures. For example, the installation of the anchoring backing plate is eccentric, or not perpendicular to the bending angle of the steel strand at the plate end, or installed obliquely, etc. During tensioning, the anchoring backing plate is eccentrically compressed, resulting in deformation of the anchor backing plate. Since the main function of the anchor rod backing plate is to disperse the pressure between the anchor rod and the anchoring ground, the function of the anchoring backing plate fails due to the deformation. Summary of the Utility Model

[0003] The purpose of the utility model is to provide an anchoring backing plate and a hollow grouting cable bolt support device, which can form a support network with the anchoring backing plate as the node, can verify the compliance of the assembly of the anchoring backing plate before grouting, and can strengthen the support effect after grouting to ensure the safety of the anchoring system.

[0004] The embodiments of the utility model are implemented as follows:

[0005] An anchoring backing plate, which comprises:

[0006] A backing plate body, the four corners of the backing plate body are arc-shaped corners, an assembly groove is arranged in the middle of the arc-shaped corner position, and a first hinge hole position is arranged on each arc-shaped corner;

[0007] A connecting stay bar, one end of the connecting stay bar is a flat head, a second hinge hole position is arranged on the flat head, the flat head is inserted into the assembly groove, and is connected to the connecting stay bar and the backing plate body through a fixing pin, so that the connecting stay bar can rotate based on the backing plate body; the other end of the connecting stay bar is hinged with a fixing piece;

[0008] A connecting plate, one or more connecting points are arranged on the connecting plate, the fixing pieces of adjacent anchoring backing plates are connected to the connecting plate, so that the connecting stay bar, the backing plate body and the connecting plate form a triangular or isosceles trapezoidal network structure.

[0009] In a preferred embodiment of the utility model, a rubber flexible pad is arranged on the inner groove surface of the assembly groove in contact with the flat head.

[0010] In a preferred embodiment of the utility model, a reinforcing piece is arranged on the bottom surface of the connecting plate.

[0011] In a preferred embodiment of the utility model, the fixing piece and the connecting plate are in a threaded connection manner, the fixing piece is a combination of a bolt and a nut, and the connecting point is a threaded hole.

[0012] In a preferred embodiment of the present utility model, the above-mentioned fixing member and the connecting plate are in a hinged manner. The fixing member is a hinged plate or a U-shaped hinged frame, and the connection point is a through hole equipped with a hinge shaft.

[0013] In a preferred embodiment of the present utility model, the above-mentioned fixing member and the connecting plate are in a snap connection manner. The fixing member is a snap block, and the connection point is a card slot that engages with the fixing member; a telescopic section is provided in the middle of the connecting pull bar.

[0014] In a preferred embodiment of the present utility model, the above-mentioned fixing member and the connecting plate are in a snap-fastening connection manner. The fixing member is a lock catch, and the connection point is a through hole; a telescopic section is provided in the middle of the connecting pull bar.

[0015] In a preferred embodiment of the present utility model, the above-mentioned backing plate body has a hemispherical protrusion protruding towards the end of the anchor rod in the middle. Reinforcing ribs are arranged on the hemispherical protrusion in a circular array based on the center of the hemispherical protrusion, and a washer ring groove is provided on the hemispherical protrusion.

[0016] A hollow grouting cable bolt support device includes a hollow anchor rod, a grout stop plug, an anchoring backing plate, a spherical washer, and a nut sequentially arranged at the rear section of the hollow anchor rod. The anchoring backing plate is any one of the above-mentioned anchoring backing plates.

[0017] The beneficial effects of the embodiments of the present utility model are as follows:

[0018] 1. By improving the backing plate body of the present utility model, hinge-connected connecting pull bars are arranged at the four corners of the backing plate, so that after adjacent anchoring backing plates are assembled, a reinforcement network can be formed through the connecting pull bars and the connecting plates. Thus, when the support system such as a slope undergoes deformation, cracking, etc., the anchor bolt supports in other places can share the deformation pressure and prevent large-area collapse.

[0019] 2. After the assembly is completed, before the concrete is poured, it is possible to verify whether there are problems such as installation eccentricity of the anchoring backing plate, non-perpendicularity to the bending angle of the steel strand at the plate end, or inclined installation, etc., thereby further improving the anchoring safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic structural diagram when the connection mode of the connecting pull bar and the connecting plate in the embodiment of the present utility model is a threaded connection;

[0022] Figure 2 This is a schematic structural view when the connection mode between the connecting stay bar and the connecting plate in the embodiment of the present utility model is hinged;

[0023] Figure 3 This is a schematic structural view when the connecting stay bar in the embodiment of the present utility model is clamped;

[0024] Icon: Hollow anchor bolt 100; Grout plug 200; Anchoring backing plate 300; Spherical washer 400; Nut 500;

[0025] Backing plate body 310; Assembly groove 311; First hinge hole position 312; Hemispherical protrusion 313; Reinforcing rib 314; Washer ring groove 315; Rubber flexible pad 316; Connecting stay bar 320; Flat head 321; Second hinge hole position 322; Fixing part 323; Connecting plate 330; Reinforcing part 331. Detailed implementation manners

[0026] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0028] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0029] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is customarily placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present utility model. In addition, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be construed as indicating or implying relative importance.

[0030] In addition, terms such as "horizontal", "vertical", "hanging" do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0031] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] First Embodiment

[0033] Please refer to Figures 1 - 3 , this embodiment provides a hollow grouting anchor cable support device, including a hollow anchor rod 100, and a grout stop 200, an anchorage backing plate 300, a spherical washer 400, and a nut 500 that are sequentially arranged at the rear section of the hollow anchor rod 100.

[0034] Among them, please refer to Figure 1 , this embodiment mainly optimizes and improves the structure of the anchorage backing plate 300. The anchorage backing plate 300 includes a backing plate body 310, connecting tie bars 320 arranged at the four corners of the backing plate body 310, and connecting plates 330 connecting adjacent tie bars, which are used to form a reinforcement network with the anchorage backing plate 300 as the node when forming a support system. On the one hand, it can verify whether there are problems such as installation eccentricity of each anchorage backing plate 300, non-perpendicularity to the bending angle of the steel strand at the plate end, or inclined installation, etc., so as to further improve the anchorage safety; on the other hand, after pouring concrete, when the support system such as the slope deforms, cracks, etc., the anchorage backing plate 300 forms a network, so that the anchor rod support in other places can share the deformation pressure and prevent large-area collapse.

[0035] Specifically, the four corners of the backing plate body 310 are arc-shaped corners, which facilitate the assembly of the connecting stay bar 320 for hinging. An assembly groove 311 is provided in the middle of the arc-shaped corner position to ensure the bottom structure of the backing plate body 310 remains unchanged. First hinge holes 312 are provided at each arc-shaped corner. The backing plate body 310 has a hemispherical protrusion 313 protruding towards the end of the anchor rod in the middle. Reinforcing ribs 314 are arranged in a circular array based on the center of the hemispherical protrusion 313 on the hemispherical protrusion 313, and a washer ring groove 315 is provided on the hemispherical protrusion 313. Ensure that the basic structure of the backing plate body 310 remains unchanged and the material (steel plate or cast iron plate) remains unchanged to ensure that its strength meets the stress requirements during prestressed tension construction. Further, a rubber flexible pad 316 is provided on the inner groove surface of the assembly groove 311 in contact with the flat head.

[0036] One end of the connecting stay bar 320 is a flat head 321, and a second hinge hole 322 is provided on the flat head 321 for inserting the flat head 321 into the assembly groove 311, and then connecting to the connecting stay bar 320 and the backing plate body 310 through a fixing pin 340, so that the connecting stay bar 320 can rotate based on the backing plate body 310. A fixing member 323 is hinged at the other end of the connecting stay bar 320. The specific structure of the fixing member 323 and the connection method with the connecting plate 330 are not limited, as long as it satisfies a fixed connection (such as welding, etc.) or a detachable fixed connection method (thread connection, snap connection, etc.).

[0037] One or more connection points are provided on the connecting plate 330 for connecting the fixing members 323 on two adjacent anchoring backing plates 300. For example, when the fixing member 323 uses a connection method such as a buckle, the connecting plate 330 is provided with one connection point; when the fixing member 323 uses other connection methods, the connecting plate 330 is provided with multiple connection points. In this way, the fixing members 323 of adjacent anchoring backing plates 300 are connected to the connecting plate 330, so that the connecting stay bar 320, the backing plate body 310, and the connecting plate 330 form a triangular or isosceles trapezoidal network structure.

[0038] Reinforcing members 331, such as screws, etc., can also be provided on the bottom surface of the connecting plate 330 for further strengthening the stability of the network structure.

[0039] Next, according to different connection methods, exemplary implementation methods are given, which should actually include but are not limited to the following methods:

[0040] ① When the fixing member 323 and the connecting plate 330 use a thread connection method, the fixing member 323 can be a bolt and nut assembly 001, and the connection points are multiple threaded holes provided in the width direction. Please refer to Figure 1 , and its assembly method is to screw the bolt into the threaded hole and fasten with a nut at the other end of the connecting plate 330.

[0041] ② When the fixing member 323 and the connecting plate 330 are hinged, the fixing member 323 can be a hinge plate, and the connection point is a through hole equipped with a hinge shaft. The assembly method is to place the hinge plate at the corresponding through hole position of the connecting plate 330, and fix the hinge shaft so that the hinge plate can rotate at a certain angle based on the connecting plate 330.

[0042] The fixing member 323 can also be configured as a U-shaped hinge frame 002, see Figure 2 The connecting plate 330 is inserted into the U-shaped hinge frame, and then the hinge shaft is fixedly assembled, so that the U-shaped hinge frame can rotate at a certain angle based on the connecting plate 330.

[0043] Compared with method ①, the assembly of the anchor pad 300 network is more flexible and can be used for supporting uneven slopes.

[0044] And when connection methods ① and ② are selected, since the anchor pad 300 needs to share the deformation pressure of the adjacent supports, the connecting rod 320 here can use a rod of a certain length. When encountering a flat slope, the rod can be a block-shaped rod. When encountering an uneven slope, the rod can be a rod structure with a thin steel strand in the middle. Therefore, the specific material of the rod is not limited. What needs to be ensured is that a rod structure with a non-adjustable length is used between the anchor pad 300 and the connecting plate 330.

[0045] ③ When the fixing member 323 and the connecting plate 330 are connected by means of a card connection, the fixing member 323 is a card block, and the connection point is a card slot that is engaged with the fixing member 323. A locking structure is provided inside the card slot. Figure 3 The structure of the card block and the card slot can adopt the existing mature card block and card slot structure.

[0046] Although the connection strength of the snap-fit ​​structure is not as good as that of the threaded connection and the hinged connection, it can still be used to verify whether the anchor pad 300 is assembled in compliance with regulations, and the snap-fit ​​structure is easy to dismantle, so it is convenient for secondary use when verifying other support systems.

[0047] ④ When the fixing member 323 and the connecting plate 330 are connected by snap-fit ​​connection, the fixing member 323 is a lock buckle, and the connection point is a through hole. The selection principle is the same as ③, both of which are based on secondary use, and do not consider the stress sharing effect.

[0048] When connection methods ③ and ④ are selected, since the reinforcement network only considers verifying the qualification of the installed anchor pad 300, when using the pull rod, you can choose to set one or more sections of retractable structure in the middle, and the retractable structure includes springs and other retractable structures.

[0049] In summary, in this embodiment, by improving the backing plate body 310, connecting tension bars 320 are hinged at the four corners of the backing plate, so that after the adjacent anchoring backing plates 300 are assembled, a reinforcement network can be formed by the connecting tension bars 320 and the connecting plates 330. Thus, when the supporting system such as a slope is deformed, cracked, etc., the bolt support in other places can share the deformation pressure and prevent large-area collapse. After the assembly is completed, before the concrete is poured, it is possible to verify whether there are problems such as installation eccentricity of the anchoring backing plate 300, non-perpendicularity to the bending angle of the steel strand at the plate end, or inclined installation, thereby further improving the anchoring safety.

[0050] This specification describes examples of embodiments of the present invention and does not mean that these embodiments illustrate and describe all possible forms of the present invention. It should be understood that the embodiments in the specification can be implemented in various alternative forms. The drawings do not need to be drawn to scale; some features can be enlarged or reduced to show details of specific components. The specific structural and functional details disclosed should not be construed as limiting, but are merely a representative basis for teaching those skilled in the art to implement the present invention in various forms. Those skilled in the art should understand that the multiple features described and illustrated with reference to any one drawing can be combined with the features illustrated in one or more other drawings to form embodiments not explicitly illustrated or described. The described combined features provide representative embodiments for typical applications. However, various combinations and variations of features consistent with the teachings of the present invention can be used for specific applications or implementations as needed.

[0051] The foregoing is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An anchoring pad, characterized in that: The anchoring pad comprises: A backing plate body, wherein the four corners of the backing plate body are arc corners, a mounting groove is provided in the middle of the arc corners, and a first hinge hole is provided on each of the arc corners; A connecting rod, one end of which is a flat head, a second hinge hole is arranged on the flat head, the flat head is inserted into the assembly groove, the connecting rod and the pad body are connected by a fixing pin, so that the connecting rod can rotate based on the pad body; the other end of the connecting rod is hinged with a fixing piece; A connecting plate is provided with one or more connection points, and the fixings of adjacent anchor pads are connected to the connecting plate, so that the connecting rods, pad body and connecting plate form a stable triangular or isosceles trapezoidal network structure.

2. The anchoring pad according to claim 1, characterized in that: The inner groove surface where the assembly groove contacts the flat head is provided with a rubber flexible pad.

3. The anchoring pad according to claim 1, characterized in that: A reinforcing piece is arranged on the bottom surface of the connecting plate.

4. The anchoring pad according to claim 1, characterized in that: The fixing member and the connecting plate are connected by threading, the fixing member is a bolt and nut assembly, and the connection point is a threaded hole.

5. The anchoring pad according to claim 1, characterized in that: The fixing member and the connecting plate are hinged, the fixing member is a hinge plate or a U-shaped hinge frame, and the connection point is a through hole equipped with a hinge shaft.

6. The anchoring pad according to claim 1, characterized in that: The fixing member and the connecting plate are connected in a clamping manner, the fixing member is a clamping block, and the connecting point is a clamping groove that is engaged with the fixing member; a telescopic section is arranged in the middle of the connecting strip.

7. The anchoring pad according to claim 1, characterized in that: The fixing piece and the connecting plate are connected in a snap-fit ​​manner, the fixing piece is a lock, and the connecting point is a through hole; a telescopic section is provided in the middle of the connecting strip.

8. The anchoring pad according to claim 1, characterized in that: The pad body is a hemispherical protrusion in the middle that protrudes toward the end of the anchor rod. The hemispherical protrusion is provided with reinforcing ribs distributed in a circular array based on the center of the hemispherical protrusion, and the hemispherical protrusion is provided with a gasket ring groove.

9. A hollow grouting anchor cable support device, comprising a hollow anchor rod, a grout stopper, an anchor pad, a spherical washer and a nut sequentially arranged at the rear section of the hollow anchor rod, characterized in that: The anchoring pad is the anchoring pad described in any one of claims 1-8.

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