Cylindrical centering carrier

Abstract

The utility model discloses a cylindrical centering carrier is placed in the anchor hole and is provided with the anchoring spare in the middle shaft, include: two opposite split's and match sleeve, and match sleeve includes the inner half cylinder and outer half cylinder of coaxial line setting, and inner half cylinder and outer half cylinder are all half cylinder type, and the outer wall of inner half cylinder and the inner wall of outer half cylinder are fixedly connected through rigid connecting piece, and the inner wall of two inner half cylinders is matched and covers the outer periphery of anchoring spare, and the outer diameter of outer half cylinder is matched with the inner diameter of anchor hole, the utility model discloses the modularization design of two and match sleeve, has promoted the construction flexibility and adaptability of cylindrical centering carrier, and the whole structure has good on -the -spot operability, and the structure is reasonable and can bear greater external force, and can further improve the anchoring capacity of anchor tool after grouting is finished.

Description

Technical Field

[0001] This utility model relates to the field of foundation pit slope construction, specifically to a columnar centering carrier. Background Technology

[0002] In the field of building and municipal engineering, the common methods of slope protection or foundation pit support are the construction of soil nails, anchors, and anchor cables. In the conventional drilling process, the installation accuracy of components such as soil nails and anchors directly affects the overall stability and safety of the slope support structure. In the existing construction operations, in order to make the anchor body roughly centered, measures such as wearing plastic rings or welding limiting steel bars on the anchor body on site are generally used. These methods not only restrict the construction quality, but also have unsatisfactory construction efficiency.

[0003] Firstly, Chinese patent CN219364599U discloses a soil nail centering bracket and a soil nail centering structure, which includes a cylinder for engaging with soil nail anchor holes. The cylinder is open at both ends and has a hollow structure. The inner cavity of the cylinder is provided with a soil nail fixing member that can fix the soil nail to the center of the cylinder. A cavity is provided between the soil nail fixing member and the inner wall of the cylinder to form a concrete pouring area. However, in this structure, the cylinder mainly relies on the rigidity of the material itself and lacks a lateral reinforcement structure. It is prone to deformation under soil compression or disturbance of construction machinery, resulting in secondary displacement of the anchor rod position and reduced anchoring capacity. In addition, the soil nail body in this centering structure is connected to the soil nail fixing member by welding, binding and other methods, which requires a large amount of on-site work.

[0004] Therefore, it is necessary to propose a new type of centering structure or carrier for the centering of soil nails and anchors, which has good field operability, reasonable structure and can withstand large external forces, and can further improve the anchoring capacity of the anchors after grouting. Utility Model Content

[0005] This utility model provides a columnar centering carrier, which has good on-site operability, reasonable structure and can withstand large external forces, and can further improve the anchoring capacity of the anchor after grouting.

[0006] To achieve these objectives and other advantages of this utility model, a columnar centering carrier is provided, which is placed inside an anchor hole and has an anchor passing through its central axis. The carrier includes two opposing, joined sleeves, each comprising an inner and outer half-cylinder arranged coaxially. Both the inner and outer half-cylinders are semi-cylindrical. The outer wall of the inner half-cylinder and the inner wall of the outer half-cylinder are fixedly connected by a rigid connector. The inner walls of the two inner half-cylinders cover the outer periphery of the anchor, and the outer diameter of the outer half-cylinder matches the inner diameter of the anchor hole.

[0007] Preferably, the two straight edges of the outer half-cylinder are provided with a plurality of cylindrical connecting pins at intervals, and the connecting pins on the two straight edges of the outer half-cylinder are staggered. When the two sleeves are joined together, the plurality of connecting pins at the joint of the outer half-cylinders are coaxial and a common pin shaft passes through them.

[0008] Preferably, the diameter of the pin is equal to the inner diameter of the mating pin, and one end of the pin is provided with a pin cap with an enlarged diameter.

[0009] Preferably, the rigid connector includes a plurality of vertical plates, which are arranged around the periphery of the inner half-cylinder. The vertical plates are rectangular plates parallel to the axis of the inner half-cylinder, with two sides connected to the outer wall of the inner half-cylinder and the inner wall of the outer half-cylinder, respectively.

[0010] Preferably, a plurality of transverse ribs are connected between any two adjacent vertical plates. The plate body of the transverse ribs is perpendicular to the axis of the inner half-cylinder. The transverse ribs are fan-shaped, with their two straight edges connected to the vertical plates on both sides respectively. The two arc edges of the transverse ribs are connected to the outer wall of the inner half-cylinder and the inner wall of the outer half-cylinder respectively. The plate body of the transverse ribs is provided with slurry perforation holes.

[0011] Preferably, the vertical plate has several vertical through holes.

[0012] Preferably, the outer cylinder plate is provided with a plurality of outer cylinder through holes evenly distributed on the outer cylinder plate.

[0013] Preferably, the anchor is a threaded steel bar, and the inner wall of the inner half-cylinder is provided with an arc-shaped groove that matches the thread of the anchor.

[0014] Preferably, the two arc edges of the outer half-cylinder are provided with rounded chamfers.

[0015] This utility model has at least the following beneficial effects:

[0016] This utility model adopts a modular design with two interlocking sleeves, which improves the construction flexibility and adaptability of the columnar centering carrier. The overall structure has good on-site operability, is reasonable and can withstand large external forces. After grouting is completed, the anchoring capacity of the anchor can be further improved.

[0017] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the installation process in one technical solution of this utility model;

[0019] Figure 2This is a schematic diagram illustrating the usage of one technical solution of this utility model;

[0020] Figure 3 This is a schematic diagram of the splicing sleeve in one technical solution of this utility model. Figure 1 ;

[0021] Figure 4 This is a schematic diagram of the splicing sleeve in one technical solution of this utility model. Figure 2 ;

[0022] Figure 5 This is a front view of the splicing sleeve in one technical solution of this utility model;

[0023] Figure 6 This is a schematic diagram of the cross-section of the columnar centering carrier in one technical solution of this utility model;

[0024] Figure 7 This is a schematic diagram of the pin installation in one technical solution of this utility model.

[0025] Figure descriptions: 1-Matching sleeve, 2-Anchor, 3-Anchor hole, 4-Inner half-cylinder, 40-Arc groove, 5-Rigid connector, 51-Vertical plate, 52-Horizontal rib, 510-Vertical plate through hole, 520-Grouting hole, 6-Outer half-cylinder, 60-Outer cylinder through hole, 61-Rounded chamfer, 7-Butt pin, 8-Pin shaft, 81-Pin cap. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0027] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0028] It should be noted that, unless otherwise specified, the experimental methods described in the following embodiments are conventional methods, and the components described are commercially available unless otherwise specified. In the description of this utility model, it should be noted that, unless otherwise explicitly stated and limited, the terms "installation," "connection," and "setting" should be interpreted broadly. For example, they can refer to fixed connection or setting, detachable connection or setting, or integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The terms "lateral," "longitudinal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] like Figure 1-7 As shown, the technical solution of this application provides a columnar centering carrier, placed inside an anchor hole 3 with an anchor 2 passing through its central axis, comprising: two opposing and joined sleeves 1, each sleeve 1 including an inner half-cylinder 4 and an outer half-cylinder 6 arranged coaxially, both the inner half-cylinder 4 and the outer half-cylinder 6 being semi-cylindrical, the outer wall of the inner half-cylinder 4 and the inner wall of the outer half-cylinder 6 being fixedly connected by a rigid connector 5, the inner walls of the two inner half-cylinders 4 matchingly covering the outer periphery of the anchor 2. In this technical solution, the anchor 2 can be a finely threaded steel bar commonly used as a soil nail, or other round rod structures. The anchor hole 3 is a hole already drilled in the slope or foundation pit using drilling equipment. The outer diameter of the outer half-cylinder 6 matches the inner diameter of the anchor hole 3. The joined sleeve 1 is a semi-cylindrical assembly composed of the inner half-cylinder 4 and the outer half-cylinder 6, such as... Figure 1 , Figure 2 As shown, when the anchor 2 is placed on site, multiple sets of interlocking sleeves 1 are spaced out on the outer periphery of the anchor 2, and then the anchor 2 is placed into the anchor hole 3 together. Then, they are anchored together with the grouting in the anchor hole 3. The interlocking sleeves 1 can be temporarily fixed by tape, rope or other mechanical clamps.

[0030] In another technical solution, several cylindrical connecting pins 7 are spaced apart on the two straight edges of the outer half-cylinder 6. The connecting pins 7 on the two straight edges of the outer half-cylinder 6 are staggered. When the two matching sleeves 1 are assembled relative to each other, the several connecting pins 7 at the joint of the outer half-cylinder 6 are coaxial and share a common internal pin 8. Figure 3As shown, three coaxial mating pins 7 are provided on one straight edge of the outer half-cylinder 6, and two coaxial mating pins 7 are provided at corresponding intervals on the other straight edge. When two matching sleeves 1 of the same specification are joined together, the mating pin 7 on one of the outer half-cylinders 6 is exactly located at the position of the mating pin on the other outer half-cylinder 6. The pin shaft 8 can be a round rod with the same inner diameter as the mating pin 7. The two pin shafts 8 are each inserted into a set of mating pins 7. The pin shaft 8 can be a screw. The pin shaft 8 is fixed in the mating pin 7 by screwing nuts on both ends of the pin shaft 8.

[0031] In another technical solution, the diameter of the pin 8 is equal to the inner diameter of the mating pin 7. One end of the pin 8 is provided with a pin cap 81 with an enlarged diameter. In actual engineering, the anchor hole 3 has a certain inclination angle. Therefore, the pin 8 only needs to be provided with a pin cap 81 at one end. Under the action of gravity, the pin cap 81 is stuck at the pin opening of the uppermost mating pin 7, which can ensure the connection of the two mating sleeves 1.

[0032] In another technical solution, the rigid connector 5 includes several vertical plates 51, which are arranged around the outer side of the inner half-cylinder 4. Each vertical plate 51 is a rectangular plate parallel to the axis of the inner half-cylinder 4, with two sides connected to the outer wall of the inner half-cylinder 4 and the inner wall of the outer half-cylinder 6, respectively. In this technical solution, the vertical plates 51 are uniformly welded around the outer wall of the inner half-cylinder 4, with a plate thickness of 3-5mm. The two sides of the vertical plates 51 are welded to the outer wall of the inner half-cylinder 4 and the inner wall of the outer half-cylinder 6, respectively, to form a rigid support system. During construction, if a hole collapse occurs, the lateral pressure of the soil acts on the outer half-cylinder 6 and is then transmitted to the inner half-cylinder 4 through the vertical plates 51, avoiding radial deformation of the sleeve. The uniform distribution of the vertical plates 51 disperses the load, reduces the risk of local stress exceeding the limit, and enhances the overall deformation resistance of the structure, making it more suitable for soft soil or high lateral pressure strata.

[0033] In another technical solution, several transverse ribs 52 are connected between any two adjacent vertical plates 51. The plate body of the transverse ribs 52 is perpendicular to the axis of the inner half-cylinder 4. The transverse ribs 52 are fan-shaped, with their two straight edges connected to the vertical plates 51 on both sides respectively. The two arc edges of the transverse ribs 52 are connected to the outer wall of the inner half-cylinder 4 and the inner wall of the outer half-cylinder 6 respectively. The plate body of the transverse ribs 52 is provided with grout penetration holes 520. The transverse ribs 52 can be made using laser technology. The sleeve is cut and shaped so that the fan-shaped arc matches the curvature of the inner half-cylinder 4 and the outer half-cylinder 6. The transverse rib 52 is vertically welded between the vertical plates 51. The grouting hole 520 is set at the center of the transverse rib 52. During the grouting operation in the anchor hole 3, the grout flows through the grouting hole 520 in the grid formed by the vertical plate 51 and the transverse rib 52, filling the gap between the inner half-cylinder 4 and the outer half-cylinder 6, ensuring that the grout penetrates without dead corners. In addition, the transverse rib 52 further enhances the bending resistance of the sleeve.

[0034] In another technical solution, the vertical plate 51 is provided with a number of vertical plate through holes 510 to promote uniform distribution of grout. The vertical plate through holes 510 reduce the weight of the vertical plate 51 and at the same time alleviate the impact of grouting pressure on the structure.

[0035] In another technical solution, a plurality of outer cylinder through holes 60 are uniformly opened on the plate of the outer half cylinder 6. The outer cylinder through holes 60 are CNC drilled and distributed in a rectangular array on the outer half cylinder 6. During the grouting operation of the anchor hole 3, the grouting material can penetrate into the surrounding soil through the outer cylinder through holes 60. After solidification, it forms a "stud" effect, which enhances the pull-out resistance. The outer cylinder through holes 60 also allow air in the grouting material to be discharged, reducing the porosity.

[0036] In another technical solution, the anchor 2 is a threaded steel bar, and the inner wall of the inner half-cylinder 4 is provided with an arc-shaped groove 40 that matches the thread of the anchor 2. The arc-shaped groove 40 is milled, and the groove depth can be 1 / 2 of the rib height of the threaded steel bar. The spacing of the arc-shaped grooves 40 is consistent with the thread pitch of the threaded steel bar. Two arc-shaped grooves 40 are symmetrically opened on the inner wall of the inner half-cylinder 4 to engage with the thread of the steel bar. During installation, the threaded steel bar is embedded in the arc-shaped groove 40, and the inner wall of the arc-shaped groove 40 is in close contact with the rib of the threaded steel bar to prevent the steel bar from rotating or sliding axially. After grouting, the threaded steel bar and the inner half-cylinder 4 form a mechanical interlock to enhance the anchoring effect.

[0037] In another technical solution, the two arc edges of the outer half-cylinder 6 are provided with rounded chamfers 61. The rounded chamfers 61 are formed by grinding or stamping. The chamfers cover the entire arc edge of the outer half-cylinder 6. During the process of placing the anchor 2 into the anchor hole 3, the rounded chamfers 61 guide the overall structure to slide into the anchor hole 3 more smoothly and avoid edge jamming.

[0038] The number of devices and processing scale described herein are for the purpose of simplifying the description of this utility model. Applications, modifications, and variations of this utility model will be readily apparent to those skilled in the art.

[0039] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A columnar centering carrier, placed inside an anchor hole (3) and with an anchor (2) passing through its central axis, characterized in that, include: Two opposing sleeves (1) are assembled. Each sleeve (1) includes an inner half-cylinder (4) and an outer half-cylinder (6) arranged coaxially. Both the inner half-cylinder (4) and the outer half-cylinder (6) are semi-cylindrical. The outer wall of the inner half-cylinder (4) and the inner wall of the outer half-cylinder (6) are fixedly connected by a rigid connector (5). The inner walls of the two inner half-cylinders (4) are matched and cover the outer periphery of the anchor (2). The outer diameter of the outer half-cylinder (6) matches the inner diameter of the anchor hole (3).

2. The columnar centering carrier as described in claim 1, characterized in that, The outer half-cylinder (6) has several cylindrical connecting pins (7) spaced apart on its two straight sides. The connecting pins (7) on the two straight sides of the outer half-cylinder (6) are staggered. When the two matching sleeves (1) are joined together, the several connecting pins (7) at the joint of the outer half-cylinder (6) are coaxial and have a common pin shaft (8) inside.

3. The columnar centering carrier as described in claim 2, characterized in that, The diameter of the pin (8) is equal to the inner diameter of the mating pin (7), and one end of the pin (8) is provided with a pin cap (81) with an enlarged diameter.

4. The columnar centering carrier as described in claim 1, characterized in that, The rigid connector (5) includes several vertical plates (51), which are arranged around the outside of the inner half cylinder (4). The vertical plates (51) are rectangular plates parallel to the axis of the inner half cylinder (4), with two sides connected to the outer wall of the inner half cylinder (4) and the inner wall of the outer half cylinder (6) respectively.

5. The columnar centering carrier as described in claim 4, characterized in that, A plurality of transverse ribs (52) are connected between any two adjacent vertical plates (51). The plate body of the transverse ribs (52) is perpendicular to the axis of the inner half cylinder (4). The transverse ribs (52) are fan-shaped, with their two straight edges connected to the vertical plates (51) on both sides respectively. The two arc edges of the transverse ribs (52) are connected to the outer wall of the inner half cylinder (4) and the inner wall of the outer half cylinder (6) respectively. The plate body of the transverse ribs (52) is provided with grout penetration holes (520).

6. The columnar centering carrier as described in claim 4, characterized in that, The vertical plate (51) has several vertical plate through holes (510).

7. The columnar centering carrier as described in claim 1, characterized in that, The outer cylinder (6) has a plurality of outer cylinder through holes (60) evenly distributed on its plate.

8. The columnar centering carrier as described in claim 1, characterized in that, The anchor (2) is a threaded steel bar, and the inner wall of the inner half cylinder (4) is provided with an arc-shaped groove (40) that matches the thread of the anchor (2).

9. The columnar centering carrier as described in claim 1, characterized in that, The two arc edges of the outer half-cylinder (6) are provided with rounded chamfers (61).

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