Auxiliary installation tool for corrugated steel plate in tunnel

Abstract

The utility model relates to the field of tunnel construction, concretely relates to a corrugated steel sheet auxiliary installation frock in tunnel, including support, one end of support is used for fixedly connected in the back of excavator bucket fixed end, the other end fixedly connected with the connecting plate of support, is equipped with fixed hole on the connecting plate. Through this frock, through the excavator bucket of excavator can be attached to the corrugated steel sheet on the tunnel inner wall, does not need manual corrugated steel sheet to attach in the tunnel inner wall, solves the problem that corrugated steel sheet installs big difficulty.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction, specifically to an auxiliary installation tool for corrugated steel plates inside tunnels. Background Technology

[0002] During tunnel construction or maintenance, a layer of corrugated steel plates needs to be fixed to the inner wall of the tunnel. These corrugated steel plates are assembled from multiple arc-shaped pieces, covering the entire inner wall of the tunnel. Fixing corrugated steel plates to the inner wall of the tunnel improves the protective effect on the tunnel walls, and at the same time, the corrugated steel plates, located on the inner wall, contribute to the aesthetics of the tunnel.

[0003] However, a corrugated steel sheet is quite heavy, typically weighing 100-300 kilograms. The installation process, which involves manually attaching the corrugated steel sheet to the tunnel wall, is difficult and labor-intensive. Utility Model Content

[0004] This utility model aims to provide an auxiliary installation tool for corrugated steel plates in tunnels, which allows the corrugated steel plates to be attached to the inner wall of the tunnel using the bucket of an excavator, eliminating the need for manual attachment and solving the problems of high installation difficulty and labor intensity of corrugated steel plates.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a tooling for auxiliary installation of corrugated steel plates in tunnels, including a bracket, one end of which is a fixed end for fixed connection to the back of the excavator bucket, and the other end of the bracket is fixedly connected to a connecting plate, which has a fixing hole.

[0006] The principle and advantages of this solution are as follows: By fixing the fixed end of the bracket to the back of the bucket, the tooling is installed on the back of the bucket. Then, the inner wall of the curved corrugated steel plate is fitted with the connecting plate. The fixing holes on the connecting plate align with the pre-drilled lifting holes on the corrugated steel plate. Bolts are passed through the fixing holes on the connecting plate and the lifting holes on the corrugated steel plate and tightened, thus achieving a fixed connection between the corrugated steel plate and the connecting plate on the bracket. The excavator then moves the bucket, lifting the corrugated steel plate. The bucket moves the corrugated steel plate to the inner wall of the tunnel, where the outer wall of the corrugated steel plate fits against the inner wall of the tunnel. Workers then stand on a lifting platform to fix the corrugated steel plate to the inner wall of the tunnel. After the corrugated steel plate and the inner wall of the tunnel are fixed, the connecting plate and the corrugated steel plate are released from their fixation, and the bucket moves the tooling away from the inner wall of the tunnel and onto the ground.

[0007] This tooling allows the excavator's bucket to move the corrugated steel sheet, enabling the excavator to lift the sheet onto the tunnel wall. This eliminates the need for manual attachment of the sheet to the tunnel wall, simplifying the operation and significantly reducing the difficulty and labor intensity of corrugated steel sheet installation while improving installation efficiency.

[0008] Preferably, as an improvement, the fixing hole is a strip-shaped hole. This design facilitates the alignment of the fixing hole with the lifting hole, and allows the bolt to pass through both holes.

[0009] Preferably, as an improvement, the bracket includes multiple legs arranged in parallel to each other, with connecting rods connecting adjacent legs. One end of each leg is a fixed end, and a connecting plate is fixedly connected to the other end of the leg.

[0010] Thus, multiple legs and connecting rods make up the entire support structure. The connecting rods connect adjacent legs, which, compared to not having connecting rods, helps to improve the overall strength of the support structure and makes it less prone to deformation and damage.

[0011] Preferably, as an improvement, the fixed end is fixedly connected to the back of the bucket by an angle steel.

[0012] Therefore, by connecting the angle steel and the fixed end, one side of the angle steel is welded to the bucket, and the other side of the angle steel is welded to the side of the fixed end. Compared with the fixed end being directly welded to the back of the bucket, the side of the fixed end is fixed by the angle steel, which helps to increase the welding area of ​​the fixed end and improve the connection stability between the fixed end and the bucket.

[0013] Preferably, as an improvement, the number of outriggers is four.

[0014] Preferably, as an improvement, the outrigger includes a fixed section and a sliding section, with the fixed end located at the end of the fixed section, the connecting plate fixedly connected to the end of the sliding section, and the sliding section slidably connected to the fixed section; the bracket is provided with a spring, which is used to exert a force on the sliding section to slide away from the fixed section.

[0015] Therefore, the outriggers can extend and retract. During the process of the bucket bringing the corrugated steel plate into contact with the tunnel wall, if the excavator operator does not control the bucket properly and stop it immediately after the plate is in contact with the tunnel wall, the bucket will continue to move closer to the tunnel wall. The bucket will exert force on the support, causing relative sliding between the sliding and fixed sections. The outriggers can then shorten to accommodate the pressure exerted by the bucket on the support, preventing the bucket from putting excessive pressure on the support and bending the outriggers or damaging the corrugated steel plate. This solves the problem of the outriggers being bent or the corrugated steel plate being damaged due to the bucket not stopping in time.

[0016] Preferably, as an improvement, the fixed section is provided with a sliding cavity, and the sliding section is inserted into the sliding cavity and can slide within the sliding cavity. Thus, by inserting the sliding section into the sliding cavity and moving the sliding section within the sliding cavity, relative sliding between the fixed section and the sliding section is achieved.

[0017] Preferably, as an improvement, the connecting rod includes a movable connecting rod fixedly located on the sliding section and a fixed connecting rod fixedly located on the fixed section.

[0018] Therefore, the movable connecting rod is connected to the sliding section, and the fixed connecting rod is connected to the fixed section. In this way, both the movable and fixed sections are supported and fixed by connecting rods, thereby improving the structural stability and firmness of the fixed and sliding sections and avoiding the problem that the side walls of the fixed section are relatively weak and prone to bending due to the presence of a sliding cavity.

[0019] Preferably, as an improvement, the fixed section has multiple fixing connecting rods. Multiple fixing connecting rods connect adjacent fixed sections, resulting in better stability and a more secure fixed section.

[0020] Preferably, as an improvement, a guide rod is fixedly connected to the movable connecting rod. The guide rod is parallel to the support leg, passes through the fixed connecting rod, and slides with the fixed connecting rod. A spring is sleeved on the outside of the guide rod, and the two ends of the spring are fixedly connected to the sliding connecting rod and the fixed connecting rod, respectively.

[0021] Therefore, when the sliding section and the fixed section slide relative to each other, the movable connecting rod on the sliding section drives the guide rod to move. The guide rod slides on the fixed connecting rod and is located between the movable and fixed connecting rods, thus connecting them and further strengthening the overall structural strength of the support. Simultaneously, a spring is fitted onto the outside of the guide rod, which acts as a limit for the spring, preventing it from bending when compressed. When the force compressing the support is removed, the spring, under its elastic force, causes the sliding section to move away from the fixed section and return to its original position. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of an auxiliary installation tool for corrugated steel plates in a tunnel connected to an excavator bucket, as described in Example 1.

[0023] Figure 2 for Figure 1 A three-dimensional diagram from another perspective.

[0024] Figure 3 This is a three-dimensional schematic diagram of an auxiliary installation tool for corrugated steel plates in a tunnel connected to an excavator bucket, as shown in Example 2.

[0025] Figure 4 This is a schematic diagram of a bucket attaching a corrugated steel plate to the inner wall of a tunnel using the tooling described in this application. Detailed Implementation

[0026] The following detailed description illustrates the specific implementation method: The reference numerals in the accompanying drawings include: bucket 1, back side 2, outrigger 3, sliding section 31, fixed section 32, connecting rod 4, movable connecting rod 41, first fixed connecting rod 42, corrugated steel plate 5, bolt 6, hoisting hole 7, connecting plate 8, fixing hole 9, nut 10, spring 11, guide rod 12, second fixed connecting rod 13, tunnel inner wall 14.

[0027] Example 1 The basics are as follows: Figure 1 , Figure 2 and Figure 4 As shown: A tooling for auxiliary installation of corrugated steel plates in tunnels includes a support frame, which includes multiple legs 3. In this embodiment, there are four legs 3. The length of the legs 3 is 0.5-1m.

[0028] Four support legs 3 are arranged parallel to each other in a rectangular pattern. Connecting rods 4 are welded between adjacent support legs 3, connecting the four support legs 3 together. In some embodiments, inclined connecting rods can also be connected between adjacent support legs 3 to improve the overall stability of the support structure. One end of each support leg 3 is a fixed end, welded to the back surface 2 of the bucket 1. An angle steel is also welded between the fixed end and the back surface 2 of the bucket 1. One side of the angle steel is welded to one side of the fixed end, and the other side of the angle steel is welded to the back surface 2 of the bucket 1. A rectangular connecting plate 8 is welded to the end of each support leg 3 away from the bucket 1. The ends of the four support legs 3 are welded to the four corners of the connecting plate 8. The connecting plate 8 has fixing holes 9, which are strip-shaped holes.

[0029] The specific implementation process is as follows: By fixing the fixed end of the bracket to the back 2 of the bucket 1, the tooling is installed on the back 2 of the bucket 1. Then, the inner side wall of the arc-shaped corrugated steel plate 5 is fitted with the connecting plate 8 (since the corrugated steel plate 5 is arc-shaped, the fitting here is not complete). The fixing hole 9 on the connecting plate 8 is opposite to the lifting hole 7 reserved on the corrugated steel plate 5 (in this embodiment, the lifting hole 7 reserved in the center of the corrugated steel plate 5 is opposite to the fixing hole 9 on the connecting plate 8). The bolt 6 is passed through the fixing hole 9 on the connecting plate 8 and the lifting hole 7 on the corrugated steel plate 5. The nut 10 is tightened on the bolt 6 (the nut 10 is located on one side of the connecting plate 8), thereby realizing the fixed connection between the corrugated steel plate 5 and the connecting plate 8 on the bracket.

[0030] Combination Figure 4As shown, the excavator then moves the bucket 1 to lift the corrugated steel plate 5. The bucket 1 moves the corrugated steel plate 5 to the inner wall of the tunnel, where the outer wall of the corrugated steel plate 5 fits against the inner wall 14 of the tunnel. Then, workers stand on the lifting vehicle to fix the corrugated steel plate 5 to the inner wall 14 of the tunnel (the fixing method is to use the pre-drilled holes on the corrugated steel plate 5 to connect the inner wall 14 of the tunnel (secondary lining) to the corrugated steel plate 5, using M20 chemical anchors with an insertion depth of not less than 20cm and a pull-out force of not less than 40kN for a single chemical anchor). After the corrugated steel plate 5 and the inner wall 14 of the tunnel are fixed, the nut 10 on the bolt 6 is unscrewed, the connecting plate 8 and the corrugated steel plate 5 are released from fixation, and the bucket 1 moves the tooling to the ground, while the corrugated steel plate 5 remains fixed on the inner wall 14 of the tunnel. After the bucket 1 moves the tooling to the ground, another corrugated steel plate 5 is fixed on the tooling, and the other corrugated steel plate 5 is installed on the tunnel inner wall 14 in the same way.

[0031] Example 2 Combination Figure 3 As shown, this embodiment is an improvement on embodiment 1. In this embodiment, each support leg 3 includes a fixed section 32 and a sliding section 31, with the fixed end located at the end of the fixed section 32. The connecting plate 8 is welded to the end of the sliding section 31, and the sliding section 31 is slidably connected to the fixed section 32. Specifically, the sliding method is as follows: the fixed section 32 is provided with an axially arranged sliding cavity, and the sliding section 31 is inserted into the sliding cavity, allowing the sliding section 31 to slide within the sliding cavity.

[0032] The connecting rod 4 includes a movable connecting rod 41 fixedly located on the sliding section 31 and a fixed connecting rod fixedly located on the fixed section 32. The movable connecting rod 41 is welded between two adjacent sliding sections 31, and the fixed connecting rod is welded between adjacent fixed sections 32. The fixed connecting rod is perpendicular to the fixed section 32, and the movable connecting rod 41 is perpendicular to the sliding section 31. In this embodiment, there are two sets of fixed connecting rods 4, namely a first fixed connecting rod 42 and a second fixed connecting rod 13. The first fixed connecting rod 42 is located above the second fixed connecting rod 13. A guide rod 12 is welded to each movable connecting rod 41. The guide rod 12 is parallel to the support leg 3. Both the first fixed connecting rod 42 and the second fixed connecting rod 13 are provided with rod holes, and the guide rod 12 passes through at least the rod hole on the first fixed connecting rod 42. A spring 11 is sleeved on the outside of the guide rod 12. The spring 11 is a compression spring, and its two ends are welded to the first fixed connecting rod 42 and the movable connecting rod 41, respectively.

[0033] In this embodiment, there are four guide rods 12 and four springs 11, which are located on the four first fixed connecting rods 42 and the movable connecting rods 41, respectively.

[0034] The reason for this configuration in this embodiment is that the outrigger 3 in embodiment 1 cannot extend or retract. During the process of the bucket 1 driving the corrugated steel plate 5 to fit against the tunnel inner wall 14, if the excavator operator does not control the bucket 1 properly and stops it after the corrugated steel plate 5 fits against the tunnel inner wall 14, the bucket 1 will tend to continue to move closer to the tunnel inner wall 14. The outrigger 3 will hinder the bucket 1 from moving towards the tunnel inner wall 14. The force of the bucket 1 moving towards the tunnel inner wall 14 will act on the outrigger 3, which may bend the outrigger 3 or transfer the force to the corrugated steel plate 5, causing the corrugated steel plate 5 to be squeezed and deformed.

[0035] In this embodiment, once the corrugated steel plate 5 is in contact with the tunnel wall 14, if the excavator operator fails to control the bucket 1 properly and stop it immediately, the bucket 1 will tend to continue moving closer to the tunnel wall 14. At this time, the sliding section 31 and the fixed section 32 slide relative to each other, the fixed section 32 moves towards the tunnel wall 14, and the sliding section 31 enters the fixed section 32. The outrigger 3 can then shorten to accommodate the movement of the bucket 1, preventing the bucket 1 from forcibly applying force to the outrigger 3 and bending it or damaging the corrugated steel plate 5. This solves the problem of the outrigger 3 being bent or the corrugated steel plate 5 being damaged due to the large compressive force exerted by the bucket 1 on it. The excavator operator can use this brief period of time during which the outrigger 3 shortens to react and stop the bucket 1.

[0036] During the shortening process of outrigger 3, guide rod 12 slides on the first fixed connecting rod 42, and guide rod 12 moves towards bucket 1, compressing spring 11. After the corrugated steel plate 5 is installed, bucket 1 moves this tooling away from the corrugated steel plate 5 installed on the tunnel inner wall 14. At this time, outrigger 3 is no longer under the pressure of bucket 1, spring 11 returns to its deformation, and spring 11 drives the moving connecting rod 41 to move away from bucket 1. Sliding section 31 moves away from bucket 1 on fixed section 32, and outrigger 3 extends and returns to its original position.

[0037] 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 tooling for auxiliary installation of corrugated steel plates in tunnels, characterized in that: The device includes a bracket, one end of which is a fixed end for fixed connection to the back of the bucket, and the other end of which is fixedly connected to a connecting plate with a fixing hole.

2. The auxiliary installation fixture for corrugated steel plates in tunnels according to claim 1, characterized in that: The fixing hole is a strip-shaped hole.

3. The auxiliary installation fixture for corrugated steel plates in tunnels according to claim 1, characterized in that: The bracket includes multiple legs arranged in parallel to each other, with connecting rods connecting adjacent legs. One end of each leg is the fixed end, and the connecting plate is fixedly connected to the other end of the leg.

4. The auxiliary installation fixture for corrugated steel plates in tunnels according to claim 3, characterized in that: The fixed end is fixedly connected to the back of the bucket by angle steel.

5. The auxiliary installation fixture for corrugated steel plates in a tunnel according to claim 3, characterized in that: The number of outriggers is four.

6. The auxiliary installation fixture for corrugated steel plates in tunnels according to claim 3, characterized in that: The outrigger includes a fixed section and a sliding section. The fixed end is located at the end of the fixed section, and the connecting plate is fixedly connected to the end of the sliding section. The sliding section is slidably connected to the fixed section. The bracket is provided with a spring, which is used to apply a force to the sliding section to slide away from the fixed section.

7. The auxiliary installation fixture for corrugated steel plates in tunnels according to claim 6, characterized in that: The fixed section is provided with a sliding cavity, and the sliding section is inserted into the sliding cavity and can slide in the sliding cavity.

8. The auxiliary installation fixture for corrugated steel plates in tunnels according to claim 6, characterized in that: The connecting rod includes a movable connecting rod fixedly located on the sliding section and a fixed connecting rod fixedly located on the fixed section.

9. The auxiliary installation fixture for corrugated steel plates in a tunnel according to claim 8, characterized in that: A guide rod is fixedly connected to the movable connecting rod. The guide rod is parallel to the support leg. The guide rod passes through the fixed connecting rod and slides with the fixed connecting rod. The spring is sleeved on the outside of the guide rod, and the two ends of the spring are fixedly connected to the sliding connecting rod and the fixed connecting rod, respectively.

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