Angle control tool for tunnel feet-lock anchor pipe

Abstract

The utility model relates to the technical field of tunnel construction, in particular to an angle control tool for a tunnel feet-lock anchor pipe. The tool comprises a steel plate, a mounting base, a first support, a second support, a guide pipe and a steel frame, the steel plate is included, positioning assemblies are arranged on the two sides of the steel plate in a mirror symmetry mode, and each positioning assembly comprises a mounting base, a first support, a second support and a guide pipe; the second support and the first support are arranged on the mounting base from top to bottom, the second support is shorter than the first support, and the guide pipe is obliquely mounted above the first support and the second support. The inclination angle alpha between the guide pipe and the horizontal plane can be adjusted to be 10-20 degrees, it is guaranteed that the angle meets the standard requirement when the feet-lock anchor pipe is driven in, and therefore the grouting fullness and the steel frame stability are improved. The tool has the advantages of being easy to manufacture, convenient to construct, capable of being repeatedly used, safe, economical and the like, the problem that the angle of the anchor pipe is difficult to control in manual operation is effectively solved, and the steel frame sinking risk caused by the fact that the angle does not meet the standard requirement is reduced.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction technology, specifically to a tooling for controlling the angle of a tunnel anchor pipe. Background Technology

[0002] During tunnel construction, when installing the steel frame after excavating the upper (or middle, or lower) bench, anchor bolts are needed to fix the main body of the steel frame. When manually driving the anchor bolts into the rock wall, it is impossible to control the tilt angle of the anchor bolts. Construction specifications require the anchor bolt tilt angle to be within the range of 10-20 degrees. If the anchor bolt tilt angle does not meet the specifications, the anchor bolt pipe will cause problems such as incomplete grouting and backflow due to the angle not meeting the requirements, resulting in unsatisfactory grouting effect. The angle not meeting the requirements will also prevent the anchor pipe from forming a good anchor with the I-beam steel frame and the rock, affecting the stability of the steel frame and making it easy for unsafe conditions such as steel frame sinking to occur.

[0003] Therefore, the premise that the inclination angle of the anchor pipe meets the specification requirements is that the inclination angle of the anchor rod is accurate when it is driven in. Therefore, there is an urgent need for a tool that can control the driving angle of the anchor rod so that the inclination angle of the anchor pipe meets the specification requirements. Utility Model Content

[0004] The problem to be solved by this utility model is to provide a tooling that can control the driving angle of the anchor bolt so that the tilt angle of the anchor pipe meets the specification requirements and strengthens the anchoring of the anchor pipe to the rock.

[0005] To achieve the above objectives, this utility model provides the following technical solution: it includes a steel plate, with positioning components arranged symmetrically on both sides of the steel plate. The positioning components include a mounting base, a first bracket, a second bracket, and a guide tube. The mounting base is connected to the steel plate. The second bracket and the first bracket are arranged on the mounting base from top to bottom, and the length of the second bracket is less than the length of the first bracket. The guide tube is installed obliquely above the first bracket and the second bracket, and the angle α between the axis of the guide tube and the horizontal plane is 10°-20°.

[0006] Preferably, the mounting base has at least two bolt holes.

[0007] Preferably, both bracket one and bracket two are made of angle steel and welded to the mounting base.

[0008] Preferably, the steel plate has a thickness of 5-10mm, a width of 220-240mm, and a length of 300-400mm.

[0009] Preferably, the guide tube is a steel pipe with an inner diameter of 50mm and a length of 150-200mm.

[0010] Compared with the prior art, this utility model provides a tooling for controlling the angle of tunnel anchor pipe locking, which has the following advantages:

[0011] 1. Simple to manufacture: The materials used in this utility model are all commonly found on construction sites and are abundant in resources;

[0012] 2. Simple construction: Installation can be carried out by a single person, and the process is quick;

[0013] 3. Long-lasting effect: This method can be reused to ensure that the angle of the anchor pipe meets the specifications;

[0014] 4. Environmentally friendly and economical: This tooling can be processed in-house, saving costs by avoiding custom orders from manufacturers;

[0015] 5. Safe to use; the tool can be fixed on the steel frame, the rotating rod is stable during the worker's operation and meets the angle requirements, which improves the quality of the next grouting process. After grouting, it forms an integral whole with the rock, avoiding unsafe factors such as the steel frame sinking. Attached Figure Description

[0016] Figure 1 This is a front axonometric view of the present invention;

[0017] Figure 2 This is an isometric view of the rear side of this utility model;

[0018] Figure 3 This is a schematic diagram of the left side of this utility model;

[0019] Figure 4 This is a schematic diagram illustrating the use of this utility model;

[0020] Explanation of reference numerals in the attached drawings: 1. Steel plate; 2. Mounting base; 21. Bolt hole; 3. Bracket 1; 4. Bracket 2; 5. Guide tube; 6. Steel frame. Detailed Implementation

[0021] The technical solutions of the present utility model will now be described with reference to the accompanying drawings in the embodiments of the present utility model:

[0022] To address the problems mentioned in the background art, this utility model provides a tooling for controlling the angle of a tunnel anchor pipe, as shown in the figure. It includes a steel plate 1 with positioning components mirror-symmetrically arranged on both sides. Each positioning component includes a mounting base 2, a first bracket 3, a second bracket 4, and a guide tube 5. The mounting base 2 is connected to the steel plate 1. The second bracket 4 and the first bracket 3 are arranged from top to bottom on the mounting base 2. Both the first bracket 3 and the second bracket 4 are made of angle steel and welded to the mounting base 2. The length of the second bracket 4 is less than the length of the first bracket 3, and one end of the second bracket 4 is aligned with the first bracket 3. The guide tube 5 is installed obliquely above the first bracket 3 and the second bracket 4, forming an inclination angle α between the axis of the guide tube 5 and the horizontal plane. The inclination angle α ranges from 10° to 20° and can be adjusted according to site requirements. The adjustment of the inclination angle α is determined based on the lengths of the first bracket 3 and the second bracket 4. Figure 3 As shown, the length of bracket 3 is D, the length of bracket 4 is L, and the height of both bracket 3 and bracket 4 is H. The height H can be understood as a constant value, or the distance between bracket 3 and bracket 4. When the height H is constant, the tilt angle α can be adjusted by adjusting the difference in length between bracket 3 and bracket 4. The adjustment principle is as follows: From the tangent function, we know that tanα=H / (DL), α=arctan[H / (DL)]. The tilt angle α is determined by the height H, the length D of bracket 3, and the length L of bracket 4. Under the premise that the height H is determined, the tilt angle α is determined by the difference between the length D of bracket 3 and the length L of bracket 4.

[0023] Mounting base 2 has at least two bolt holes 21. In the embodiment shown in the figure, there are three bolt holes 21: one bolt hole 21 in the area between bracket 2 4 and bracket 1 3, and two bolt holes 21 below bracket 1 3. The three bolt holes 21 form a triangle, which is more conducive to fixing the fixture. The fixture is fixedly connected to the steel frame 6 by anchor bolts with a diameter of 12mm or 16mm.

[0024] The steel plate 1 has a thickness of 5-10mm and a width of 220-240mm. This width is 1-2mm wider than the thickness of the steel frame 6 to facilitate clamping the tooling onto the outside of the steel frame 6. Its length is 300-400mm. The guide tube 5 is a steel pipe with an inner diameter of 50mm, which facilitates the passage of the anchor bolt. Its length is 150-200mm, providing sufficient guiding length for the anchor bolt. The angle steel used for bracket 3 and bracket 4 can be 40mm×40mm equilateral angle steel or 40mm×60mm unequal angle steel.

[0025] The assembly process of this utility model tooling is as follows:

[0026] First, the workers cut the materials, then install them according to the structure shown in the diagram, and finally use them for positioning. The materials cut by the workers are as follows:

[0027] A: A steel plate 1 with a thickness of 5-10mm, designed to be 1-2mm wider than the thickness of the steel frame 6, with a design width of 220-240mm and a length of 300-400mm;

[0028] B: Four equal or unequal angle steels, 40mm*40mm or 40mm*60mm;

[0029] C: Two ordinary steel pipes are used as guide pipes 5. The steel pipes have a wall thickness of 2mm, an inner diameter of 50mm, and a length of 150-200mm. The angle of inclination of the steel pipes to the horizontal plane is α. The size of α is adjusted according to the construction requirements. Generally, α is between 10° and 20°.

[0030] D: 6 anchor bolts, bolt diameter 12mm or 16mm, symmetrically arranged.

[0031] Two mounting bases 2 are integrally formed on both sides of the steel plate 1. Angle steel bracket 1 3 and bracket 2 4 are welded to the mounting base 2. The guide tube 5 is welded to bracket 1 3 and bracket 2 4 at an angle to ensure that the tilt angle α of the guide tube 5 is within the range of 10°-20°.

[0032] When using the tooling of this utility model, such as Figure 4 As shown, the arch foot of the steel frame 6 is leveled around the perimeter, and then the two mounting seats 2 of the tooling are fixed to the steel frame 6 with anchor bolts. The steel plate 1 is also tightly attached to the steel frame 6. The workers install the rotating rod and start the operation. Then, the guide pipes 5 on both sides are inserted into the locking foot anchor pipes respectively. After the pouring is completed, the two locking foot anchor pipes are connected and fixed to the steel frame 6.

[0033] This invention achieves precise control of the anchor pipe construction angle by adjusting the inclination angle of the guide pipe 5 through the lengths of bracket 3 and bracket 4, ensuring it meets the specification requirement of 10°-20°. The tooling has a simple structure, readily available materials, and can be quickly installed and reused, significantly improving grouting quality and steel frame stability while reducing safety risks. Furthermore, its modular design offers strong adaptability, is economical and environmentally friendly, and is suitable for various tunnel engineering scenarios, possessing high practical value and significant potential for wider application.

[0034] The above embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

Claims

1. A tooling for controlling the angle of a tunnel anchor pipe, characterized in that: The steel plate (1) is provided with positioning components on both sides of the steel plate (1) in a mirror symmetrical manner. The positioning components include a mounting base (2), a bracket one (3), a bracket two (4) and a guide tube (5). The mounting base (2) is connected to the steel plate (1). The bracket two (4) and the bracket one (3) are set on the mounting base (2) from top to bottom, and the length of the bracket two (4) is less than the length of the bracket one (3). The guide tube (5) is installed at an angle above the bracket one (3) and the bracket two (4). The angle α between the axis of the guide tube (5) and the horizontal plane is 10°-20°.

2. The tunnel anchor pipe angle control fixture according to claim 1, characterized in that: The mounting base (2) is provided with no fewer than two bolt holes (21).

3. The tunnel anchor pipe angle control fixture according to claim 1, characterized in that: Both bracket 1 (3) and bracket 2 (4) are made of angle steel and welded to the mounting base (2).

4. The tunnel anchor pipe angle control fixture according to claim 1, characterized in that: The steel plate (1) has a thickness of 5-10mm, a width of 220-240mm, and a length of 300-400mm.

5. The tunnel anchor pipe angle control fixture according to claim 1, characterized in that: The guide tube (5) is a steel pipe with an inner diameter of 50 mm and a length of 150-200 mm.

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