Tunnel anchor rod guiding device

Abstract

The utility model relates to the technical field of tunnel construction, and discloses a tunnel anchor rod guiding device which comprises a guiding plate installed on a steel arch, the guiding plate is provided with a guiding hole for an anchor rod to penetrate through, and a positioning assembly is movably arranged between the guiding plate and the guiding hole. The positioning assembly comprises a welding piece sliding between the guide hole and the guide plate and an elastic piece arranged between the welding piece and the guide plate, the positioning assembly is used for fixing the anchor rod, the guide plate is fixedly welded to the steel arch frame, then the anchor rod penetrates through the guide hole of the guide plate, the anchor rod abuts against the interior of the guide hole through the positioning assembly, and the steel arch frame is fixed. Compared with the prior art, the material cost of the guide plate is far lower than the cost of an anchor rod positioning tool, after the guide plate is installed on the steel arch, the anchor rod penetrates through the guide hole and penetrates into a rock layer, the anchor rod and the guide plate are fixed through the positioning assembly, and therefore the anchor rod is fixed to the guide plate. And the guide plate does not need to be dismounted, so that the effect of saving cost is achieved.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction technology, and specifically to a tunnel anchor bolt guiding device. Background Technology

[0002] After the tunnel is excavated, several steel arch frames made of I-beams need to be evenly laid along the curved inner wall of the tunnel to effectively support the tunnel wall, enhance the structural strength of the tunnel, and prevent tunnel collapse. Then, concrete is poured to solidify the wall surface and prevent the falling of gravel or soil. Before pouring concrete after the steel arch frames are laid, the steel arch frames need to be fixed. The usual method is to drive anchor bolts of a certain length into the inner wall of the tunnel on both sides of the steel arch frames, and then weld the anchor bolts to the steel arch frames to fix them. The anchor bolts fix the steel arch frames to the inner wall of the tunnel, and several steel frames are connected and fixed with steel bars.

[0003] Chinese utility model patent CN216741577U discloses a locking anchor bolt positioning fixture. This fixture is used when driving in anchor bolts. It includes a U-shaped frame and a positioning sleeve mounted on the U-shaped frame. Before driving in the anchor bolt, the fixture is installed on a steel arch frame using locking bolts. The anchor bolt is then driven into the rock face through the positioning sleeve. The anchor bolt positioning fixture is then removed, and finally, the anchor bolt and the steel arch frame are welded together. However, in practice, due to the numerous steel arch frames and the need to remove the locking anchor bolt positioning fixture after each anchor bolt is driven in, this process incurs significant labor and fixture costs. Summary of the Invention

[0004] The present invention aims to provide a tunnel anchor bolt guiding device to solve the problem of high cost.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a tunnel anchor bolt guiding device, comprising a guide plate installed on a steel arch frame, the guide plate having a guide hole for the anchor bolt to pass through, and a positioning component movably disposed between the guide plate and the guide hole, the positioning component comprising a welded part sliding between the guide hole and the guide plate, and an elastic part disposed between the welded part and the guide plate, the positioning component being used to fix the anchor bolt.

[0006] The beneficial effects of this solution are as follows: the guide plate is fixedly welded to the steel arch frame, and then the anchor rod is passed through the guide hole of the guide plate. The anchor rod is pressed against the guide hole by the positioning component, and then the anchor rod is fixed to the guide plate by welding the anchor rod and the positioning component. Compared with the existing technology, the material cost of the guide plate is much lower than the cost of the anchor rod positioning tooling. Moreover, after the guide plate is installed on the steel arch frame, the anchor rod is passed through the guide hole and into the rock layer. The anchor rod and the guide plate are fixed by the positioning component, and the guide plate does not need to be removed, saving labor costs. It can achieve the goal of saving material and labor costs.

[0007] Furthermore, a sliding cavity is provided inside the guide plate, which is connected to the guide hole, and the positioning component is disposed inside the sliding cavity.

[0008] The beneficial effects of this solution are as follows: by connecting the sliding cavity and the guide hole, the positioning component can slide through the sliding cavity to the guide hole and abut against the anchor rod. At this time, the anchor rod can be fixed by welding the anchor rod and the positioning component, thus achieving the purpose of fixing the anchor rod.

[0009] Furthermore, the welded part is slidably connected to the sliding cavity, and the elastic element is connected between the sliding cavity and the welded part. The elastic element is used to pull the welded part from the guide hole to the sliding cavity.

[0010] Furthermore, the guide plate is also provided with a driving cavity, which is connected to the sliding cavity. A driving plate is vertically slidably connected in the driving cavity. The movement trajectory of the driving plate intersects with the welding part. The driving plate is used to push the welding part from the sliding cavity into the guide hole.

[0011] Furthermore, a driven plate is provided at the top of the welded part, and the top of the driven plate is inclined, with the end of the drive plate abutting against the top of the driven plate.

[0012] The beneficial effects of this solution are as follows: the drive plate slides downward and abuts against the driven plate, the drive plate presses down on the driven plate through the inclined surface, and the driven plate drives the welded part to move in the direction of the guide hole through the inclined surface, thereby enabling the welded part to abut against the anchor rod.

[0013] Furthermore, the drive cavity is connected to the outside world, and the drive plate protrudes from the outer surface of the guide plate.

[0014] The beneficial effects of this solution are as follows: the drive plate protrudes from the surface of the guide plate, which makes it convenient for the operator to press down. After the drive plate is pressed down to make the welded parts and anchor rods close together, the position of the welded parts can be fixed by welding the protruding drive plate and guide plate, which can facilitate the welding of the welded parts and anchor rods.

[0015] Furthermore, an arc-shaped welding plate is provided at the end of the welded component near the guide hole, and the arc-shaped welding plate is used to abut the anchor rod.

[0016] Furthermore, the elastic element is set as a tension spring. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the installation effect structure of an embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0019] Figure 3 This is a cross-sectional structural diagram of an embodiment of the present utility model. Detailed Implementation

[0020] The following detailed description illustrates the specific implementation method:

[0021] The reference numerals in the accompanying drawings include: steel arch frame 1, guide plate 2, guide hole 21, sliding cavity 22, driving cavity 23, driving plate 231, positioning assembly 3, welded part 31, driven plate 311, arc-shaped welded plate 312, and tension spring 32.

[0022] Example

[0023] A tunnel anchor bolt guiding device, such as Figures 1-3 As shown, the system includes a guide plate 2 for fixing and welding onto the steel arch frame 1. Guide holes 21 are provided at both ends of the guide plate 2, and a sliding cavity 22 is provided in the middle of the guide plate 2. The sliding cavity 22 extends to both sides and communicates with the guide holes 21. Welded components 31 are symmetrically slidably connected to both sides of the sliding cavity 22. A fixing plate is provided at the midpoint of the sliding cavity 22. Tension springs 32 are connected between the welded components 31 on both sides and the fixing plate. The tension springs 32 and the welded components 31 together form a positioning assembly 3. The tension springs 32 are used to pull the welded components 31 on both sides from the guide holes 21 into the sliding cavity 22. The guide plate 2 is located in the sliding cavity 22. The top end of the component has a driving cavity 23, which is connected to the sliding cavity 22. The top end of the welded component 31 is integrally formed and fixedly provided with a driven plate 311. The top ends of the driven plates 311 on both sides are inclined. The driving plate 231 is vertically slidably connected inside the driving cavity 23. The two sides of the driving plate 231 abut against the inclined top surfaces of the driven plates 311 on both sides. The driving cavity 23 is connected to the outside. The driving plate 231 protrudes from the surface of the guide plate 2. The end of the welded component 31 near the guide hole 21 is integrally formed and fixedly provided with an arc-shaped welding plate 312, which is used for fixed welding with the anchor rod.

[0024] Its working principle is as follows: Several guide plates 2 are sequentially fixed and welded to the legs of the steel arch frame 1. Then, the anchor rod is passed through the guide hole 21 and tilted downward at a predetermined angle to penetrate the rock layer. After the anchor rod penetrates the rock layer, the drive plate 231 is pressed down. The drive plate 231 slides downward in the drive cavity 23. At this time, the drive plate 231 slides downward on the inclined surface of the driven plates 311 on both sides. The welded part 31 slides to both sides under the drive of the driven plates 311 and drives the arc-shaped welded plate 312 to slide into the guide hole 21. After entering the guide hole 21, the guide plate 2 contacts the side of the anchor rod that is close to it. At this time, the position of the arc-shaped welding plate 312 needs to be fixed. This is achieved by fixing and welding the drive plate 231 and the guide plate 2. Therefore, after the arc-shaped welding plate 312 is fixed, the anchor rod is welded to the arc-shaped welding plate 312, thereby fixing the anchor rod and the guide plate 2 together. At the same time, it is not necessary to remove the guide plate 2, and the contact area between the anchor rod and the guide plate 2 is increased, so that the connection between the anchor rod and the guide plate 2 has stability during the stress process.

[0025] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A tunnel anchor bolt guiding device, characterized in that: The system includes a guide plate installed on a steel arch frame. The guide plate has a guide hole for the anchor rod to pass through. A positioning component is movably arranged between the guide plate and the guide hole. The positioning component includes a welded part that slides between the guide hole and the guide plate, and an elastic part that is arranged between the welded part and the guide plate. The positioning component is used to fix the anchor rod.

2. The tunnel anchor bolt guiding device according to claim 1, characterized in that: A sliding cavity is provided inside the guide plate, which is connected to the guide hole, and the positioning component is located inside the sliding cavity.

3. The tunnel anchor bolt guiding device according to claim 2, characterized in that: The welded part is slidably connected to the sliding cavity, and the elastic element is connected between the sliding cavity and the welded part. The elastic element is used to pull the welded part from the guide hole to the sliding cavity.

4. The tunnel anchor bolt guiding device according to claim 3, characterized in that: The guide plate also has a drive cavity, which is connected to the sliding cavity. A drive plate is vertically slidably connected inside the drive cavity. The movement trajectory of the drive plate intersects with the welded part. The drive plate is used to push the welded part from inside the sliding cavity into the guide hole.

5. The tunnel anchor bolt guiding device according to claim 4, characterized in that: A driven plate is provided at the top of the welded part. The top of the driven plate is inclined, and the end of the drive plate abuts against the top of the driven plate.

6. The tunnel anchor bolt guiding device according to claim 5, characterized in that: The drive cavity is connected to the outside world, and the drive plate protrudes from the outer surface of the guide plate.

7. The tunnel anchor bolt guiding device according to claim 6, characterized in that: An arc-shaped welding plate is provided at the end of the welded part near the guide hole, and the arc-shaped welding plate is used to abut the anchor rod.

8. The tunnel anchor bolt guiding device according to claim 7, characterized in that: The elastic element is set as a tension spring.

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