Guide cap and anchor rod bearing body structure

Abstract

The utility model discloses a guide cap which comprises a central through hole (1.1), an anchorage device containing portion (1.2) and a guide portion (1.3), and the central through hole (1.1) penetrates through the anchorage device containing portion (1.2) and the guide portion (1.3). The anchorage device containing part (1.2) is provided with a plurality of anchorage device containing counter bores (1.2. 1), the anchorage device containing counter bores (1.2. 1) are arranged around the central through hole (1.1), and the opening direction of the anchorage device containing counter bores (1.2. 1) is deviated from the guide part (1.3); and the guide part (1.3) is provided with a conical rib plate and / or a conical surface. The utility model further relates to an anchor rod bearing body structure. The structure of the anchor rod bearing body is simplified, and the anti-corrosion capacity of the structure of the anchor rod bearing body is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of guide cap and anchor rod carrier structure, belong to prestressed anchor rod component technical field. BACKGROUND

[0002] In basement anti-floating engineering and foundation pit support, slope support engineering, prestressed anchor rod is often used. Prestressed anchor rod can use prestressed steel strand or finished rolled thread steel as prestressed tendon, wherein pressure type prestressed anchor rod is the most commonly used anchor rod type, anchor rod full length range uses unbonded or slow-bonded steel strand, the metal carrier at the bottom of anchor rod is used as tensioning counterforce point to prestress grouting body of anchor rod, so that anchor rod grouting body always maintains compression state in working condition, so as to not produce crack, and enhance the anticorrosion protection ability to tendon. The metal carrier at the bottom and anchor tool are the key stress points, once corroded, the whole prestressed anchor rod will fail, so the anticorrosion of metal carrier and anchor tool is very important.

[0003] The existing prestressed anchor rod carrier structure is as shown in Figure 1 The metal material bearing plate 2 is fixed with guide frame 10 or guide cap (guide part), grouting pipe 5 and prestressed tendon 3 all penetrate bearing plate 2, the lower end of prestressed tendon 3 is fixed with anchor tool 4, anchor tool 4 is clamped between bearing plate 2 and limiting plate 9, limiting plate 9 below anchor tool 4 is connected to bearing plate 2 by screw rod, when prestress is applied to prestressed tendon 3 (upward tension), prestress is transmitted to grouting body (not shown) by anchor tool 4, bearing plate 2, so that grouting body is always in compression state.

[0004] The existing prestressed anchor rod carrier structure has the following problems: complex structure, production and manufacturing are more troublesome, quality is not easy to control; the anticorrosion of bearing plate 2, anchor tool 4, limiting plate 9, guide frame 10 and other structures is mainly carried out by brushing anticorrosive coating. The anticorrosive coating on bearing plate 2, anchor tool 4 and other structures is easy to be scratched and damaged in production, transportation and construction process, which leads to weakening or even loss of anticorrosion effect, and leaves safety hidden danger. INVENTION CONTENTS

[0005] In order to overcome the problems in the prior art, the utility model provides a kind of guide cap and anchor rod carrier structure, and the specific technical scheme is as follows.

[0006] A kind of guide cap, it is characterized in that, including center through-hole, anchor tool containing part and guide part, the center through-hole penetrates the anchor tool containing part and the guide part;

[0007] The anchor tool containing part is provided with a plurality of anchor tool containing counterbores, the anchor tool containing counterbores are arranged around the center through-hole, the opening direction of the anchor tool containing counterbores is away from the guide part;

[0008] The guide portion has a tapered rib plate and / or a tapered surface.

[0009] The guide portion and the anchor accommodating portion for positioning the anchor are integrated, which is beneficial to simplify the anchor rod carrier structure, the anchor accommodating counterbore can provide good corrosion protection for the anchor, and the corrosion resistance of the anchor rod carrier structure is improved.

[0010] Further, the guide cap is made of metal or high polymer material. Preferably, the guide cap is made by one-piece forming. When the metal material is used, the guide cap can be made by one-piece forming through casting or machining. When the high polymer material is used, the guide cap can be made by one-piece forming through injection molding. The guide cap made in this way has stable quality control and avoids the quality problem caused by the assembly of multiple components in the prior art.

[0011] Further, the guide portion has a plurality of tapered rib plates, and the plurality of tapered rib plates are uniformly distributed on the periphery of the central through hole.

[0012] Further, the guide portion has a plurality of tapered rib plates, and the plurality of tapered rib plates are uniformly distributed on the periphery of the central through hole.

[0013] Based on the same inventive concept, the utility model also relates to an anchor rod carrier structure, which is characterized by comprising a bearing plate, a prestressed tendon body and the guide cap, the end of the prestressed tendon body penetrates the bearing plate and extends into the anchor accommodating counterbore, the anchor accommodating counterbore has an anchor fixed on the prestressed tendon body; and the guide cap is connected to the bearing plate.

[0014] Further, the bearing plate is provided with a through hole corresponding to the central through hole. The lower end of the grouting pipe can extend into the central through hole from the through hole, and the central through hole and the through hole of the bearing plate are used for positioning the grouting pipe.

[0015] Further, a connecting sleeve is further included, one end of the connecting sleeve is a large-diameter pad plate, the other end has an external thread, the connecting sleeve penetrates the central through hole and the through hole of the bearing plate, and a nut is arranged on the external thread of the connecting sleeve; or both ends of the connecting sleeve have external threads, the connecting sleeve penetrates the central through hole and the through hole of the bearing plate, and nuts are arranged on the external threads of both ends of the connecting sleeve. The connecting sleeve is equivalent to a common bolt or a stud bolt, the large-diameter pad plate abuts against the bearing plate or the guide cap, and the nut on the other end is tightened to fasten the bearing plate and the guide cap together (or the nuts on both ends of the stud bolt are tightened); at the same time, the inner cavity of the connecting sleeve forms a grouting channel, and the grouting pipe can extend into the inner cavity.

[0016] Furthermore, the guide cap is provided with several hooks, which can engage with the edge of the support plate. By providing hooks on the guide cap, the connection between the guide cap and the support plate is simplified. Especially when the guide cap is integrally molded from a polymer material, the molding of the hooks is very simple.

[0017] Furthermore, the anchor is a compression anchor.

[0018] Furthermore, a plug is provided at the end of the central through hole away from the bearing plate. During the process of the guide cap being inserted into the anchor hole, the plug can prevent mud and debris in the anchor hole from clogging the central through hole. When pressure grouting is performed using the grouting pipe, the grouting pressure can force open the plug.

[0019] Compared with the prior art, this utility model has the following beneficial effects.

[0020] 1. The structure of the anchor bolt bearing body is simplified by eliminating the limit plate and other structures. The anti-corrosion guide cap can be made of plastic through injection molding, which has a high degree of standardization, high production efficiency and low cost.

[0021] 2. The anchorage containment hole is slightly larger than the anchorage itself, and is filled with anti-corrosion grease, which improves the anti-corrosion performance of the anchorage. In other words, the guide cap simplifies the structure and improves the anti-corrosion performance. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the prestressed anchor bolt bearing structure in the prior art;

[0023] Figure 2 This is a cross-sectional schematic diagram of the guide cap of this utility model;

[0024] Figure 3 yes Figure 2 Schematic diagram of section AA in the diagram;

[0025] Figure 4 yes Figure 2 Schematic diagram of the BB section in the diagram;

[0026] Figure 5 This is a schematic diagram of a modified version of the guide cap;

[0027] Figure 6 This is a schematic diagram of another variation of the guide cap;

[0028] Figure 7 yes Figure 6 Schematic diagram of the CC section in the diagram;

[0029] Figure 8 This is a cross-sectional schematic diagram of the anchor bolt bearing structure of this utility model;

[0030] Figure 9This is a cross-sectional schematic diagram of a deformation example of the anchor bolt bearing structure of this utility model.

[0031] In the diagram: 1. Guide cap, 1.1. Central through hole, 1.2. Anchor housing, 1.2.1. Guide part, 1.3. Conical rib, 1.3.1. Weight reduction hole, 1.5. Hook, 1.4. Bearing plate, 2. Tongue and groove, 2.1. Prestressed tendon, 3. Anchor, 4. Grouting pipe, 5. Connecting sleeve, 6. Nut, 7. Plug, 8. Limiting plate, 9. Guide frame, 10. Anti-corrosion grease, 11. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings.

[0033] See Figures 2-9 The anchor bolt bearing structure includes a bearing plate 2, a prestressed tendon 3, and a guide cap 1. The end (lower end) of the prestressed tendon 3 penetrates the bearing plate 2 and extends into the anchor receiving countersunk hole 1.2.1. The anchor receiving countersunk hole 1.2.1 has an anchor 4 fixed to the prestressed tendon 3. The guide cap 1 is connected to the bearing plate 2. The anchor 4 can be a compression anchor or other type of anchor, as long as the anchor can fix the end of the prestressed tendon 3. The prestressed tendon 3 can be steel strand.

[0034] Among them, such as Figures 2-7 As shown, the guide cap 1 includes a central through hole 1.1, an anchor receiving portion 1.2, and a guide portion 1.3. The central through hole 1.1 penetrates both the anchor receiving portion 1.2 and the guide portion 1.3. The anchor receiving portion 1.2 is provided with a plurality of anchor receiving countersunk holes 1.2.1, which are arranged around the central through hole 1.1, and the opening direction of the anchor receiving countersunk holes 1.2.1 is opposite to that of the guide portion 1.3. The guide portion 1.3 has a tapered rib and / or a tapered surface. The anchor receiving portion 1.2 and the guide portion 1.3 of the guide cap 1 are integrally formed and may not have a clear boundary. The anchor receiving portion 1.2 mainly has anchor receiving countersunk holes 1.2.1, and the guide portion 1.3 mainly serves a guiding function to prevent the guide cap 1 from interfering with or scratching the hole wall when it is inserted into the anchor hole. Preferably, as shown... Figure 2 As shown, the lower end of the anchor receiving hole 1.2.1 has a step; the small-diameter portion is used to accommodate the prestressing tendon 3, and the large-diameter portion is used to accommodate the anchor 4, which can effectively limit the anchor 4. The anchor receiving portion 1.2 preferably adopts a circular structure, and its outer surface has a cylindrical structure (e.g., ...). Figure 5 , Figure 6 (as shown) or a frustum structure (such as) Figure 2(As shown). A gap exists between the anchorage receiving countersunk hole 1.2.1 and the anchorage 4, and anti-corrosion grease 11 fills this gap to improve the anti-corrosion performance of the anchorage 4. Preferably, the number of anchorage receiving countersunk holes 1.2.1 is generally more than the conventional 5 or 6 holes, which helps increase the adaptability and versatility of the guide cap 1.

[0035] The guide cap 1 is made of metal or polymer material. Preferably, the guide cap 1 is manufactured by integral molding. When using metal material, it can be integrally molded by casting or machining; when using polymer material, the guide cap 1 can be manufactured by injection molding. The guide cap 1 manufactured in this way has stable quality control and avoids the substandard quality caused by improper assembly of multiple parts in the prior art.

[0036] like Figure 2 , Figure 4 As shown, the guide portion 1.3 has multiple tapered ribs 1.3.1, which are evenly distributed around the central through hole 1.1. The tapered ribs 1.3.1 serve a guiding function when the guide cap is inserted into the anchor hole (not shown), similar to the function of a guide frame in the prior art. Figure 5 As shown, the guide portion 1.3 can also be a frustum structure. Preferably, as shown... Figure 6 , Figure 7 As shown, both the guide part 1.3 and the anchor receiving part 1.2 can be provided with a number of weight reduction holes 1.5. The weight reduction holes 1.5 not only help to reduce weight, but also help to reduce material usage.

[0037] The support plate 2 has a through hole (not shown) corresponding to the central through hole 1.1. The lower end of the grouting pipe 5 can extend into the central through hole 1.1 through this through hole. The central through hole 1.1 and the through hole of the support plate 2 are used to position the grouting pipe 5. The support plate 2 preferably has a tongue and groove 2.1, and the guide cap 1 has an annular protrusion (not shown) corresponding to the tongue and groove 2.1. The cooperation between the protrusion and the tongue and groove 2.1, especially when a sealing ring is placed in the tongue and groove 2.1, helps to enhance the seal between the two.

[0038] The guide cap 1 and the support plate 2 can be connected in various ways, such as... Figure 8 As shown, the two are connected by a connecting sleeve 6. One end of the connecting sleeve 6 is a large-diameter end, and the other end has external threads. The connecting sleeve 6 passes through the central through hole 1.1 and the through hole of the bearing plate 2. A nut 7 is provided on the external thread of the connecting sleeve 6. The connecting sleeve 6 is equivalent to a bolt. The large-diameter end abuts against the bearing plate 2 or the guide cap 1, and the nut 7 on the other end is tightened to fasten the bearing plate 2 and the guide cap 1 together. At the same time, the inner cavity of the connecting sleeve 6 forms a grouting channel into which the grouting pipe 5 can extend.

[0039] In another embodiment, such asFigure 9 As shown, the guide cap 1 is provided with several hooks 1.4, which can engage with the edge of the support plate 2. By providing hooks 1.4 on the guide cap 1, the connection between the guide cap 1 and the support plate 2 is simplified. Especially when the guide cap 1 is integrally molded from a polymer material, the molding of the hooks 1.4 is very simple.

[0040] Preferably, a plug 8 is provided at the end of the central through hole 1.1 (or connecting sleeve 6) away from the bearing plate 2. During the process of the guide cap 1 being inserted into the anchor hole, the plug 8 can prevent mud and debris in the anchor hole from clogging the central through hole 1.1. When pressure grouting is performed using the grouting pipe 5, the grouting pressure can force open the plug 8.

[0041] The anchor bolt bearing structure of this utility model is assembled before being implanted into the anchor hole. After the anchor hole is formed, the anchor bolt bearing structure is implanted into the anchor hole, and then grout is injected into the anchor hole through the grouting pipe 5.

[0042] The embodiments of this utility model have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features described herein can be combined with each other. This utility model is not limited to the specific embodiments described above; the specific embodiments described above are merely illustrative and not limiting. Those skilled in the art, under the guidance of this utility model, can make many modifications without departing from the spirit and scope of the claims, and all such modifications fall within the protection scope of this utility model.

Claims

1. A guide cap, characterized in that, It includes a central through hole (1.1), an anchor receiving part (1.2), and a guide part (1.3), wherein the central through hole (1.1) penetrates the anchor receiving part (1.2) and the guide part (1.3); The anchor receiving part (1.2) is provided with a plurality of anchor receiving countersunk holes (1.2.1), the anchor receiving countersunk holes (1.2.1) are arranged around the central through hole (1.1), and the opening direction of the anchor receiving countersunk holes (1.2.1) is away from the guide part (1.3); The guide portion (1.3) has a tapered rib and / or a tapered surface.

2. A guide cap according to claim 1, characterized in that, The guide cap is made of metal or polymer material; preferably, the guide cap is made by one-piece molding.

3. A guide cap according to claim 1, characterized in that, The guide portion (1.3) has a plurality of tapered ribs (1.3.1), which are evenly distributed around the central through hole (1.1).

4. A guide cap according to claim 1, characterized in that, The guide portion (1.3) has a frustum structure; preferably, the guide portion (1.3) and / or the anchor receiving portion (1.2) are also provided with a plurality of weight-reducing holes (1.5).

5. An anchor bolt bearing structure, characterized in that, The device includes a bearing plate (2), a prestressed tendon (3), and a guide cap (1) as described in any one of claims 1-4. The end of the prestressed tendon (3) extends through the bearing plate (2) into the anchor receiving countersunk hole (1.2.1). The anchor receiving countersunk hole (1.2.1) has an anchor (4) fixed to the prestressed tendon (3). The guide cap (1) is connected to the bearing plate (2). Preferably, there is a gap between the anchor receiving countersunk hole (1.2.1) and the anchor (4), and anti-corrosion grease (11) fills the gap.

6. The anchor bolt bearing structure according to claim 5, characterized in that, The bearing plate (2) is provided with a through hole corresponding to the central through hole (1.1); preferably, the lower end of the anchor receiving countersunk hole (1.2.1) is provided with a step, the small diameter part is used to receive the prestressed tendon (3), and the large diameter part is used to receive the anchor (4); preferably, the bearing plate (2) has a tongue and groove (2.1), and the guide cap (1) is provided with an annular protrusion corresponding to the tongue and groove (2.1).

7. The anchor bolt bearing structure according to claim 5, characterized in that, It also includes a connecting sleeve (6), one end of which is a large-diameter pad and the other end has an external thread. The connecting sleeve (6) passes through the central through hole (1.1) and the through hole of the bearing plate (2). A nut (7) is provided on the external thread of the connecting sleeve (6); or both ends of the connecting sleeve have external threads, the connecting sleeve passes through the central through hole and the through hole of the bearing plate, and nuts are provided on the external threads at both ends of the connecting sleeve.

8. The anchor bolt bearing structure according to claim 5, characterized in that, The guide cap (1) is provided with a plurality of hooks (1.4), which can engage with the edge of the support plate (2).

9. The anchor bolt bearing structure according to claim 5, characterized in that, The anchor (4) is a compression anchor.

10. The anchor bolt bearing structure according to claim 5, characterized in that, A plug (8) is provided at the end of the central through hole (1.1) away from the support plate (2).

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