Concrete precast block clamping and transferring device

Abstract

The invention relates to the technical field of precast block mounting, and particularly discloses a concrete precast block clamping and transferring device which comprises a transferring trolley, a clamping device and a pushing device are mounted on the transferring trolley, the pushing device is used for pushing precast blocks into mounting holes in the inner wall of a tunnel, and a plurality of foldable guide rails are embedded in the mounting holes through rivets. When the prefabricated block is prefabricated, a plurality of guide rods are fixed to the edge of the prefabricated block, the guide rods and the foldable guide rails are arranged in a one-to-one correspondence mode, the guide rods can slide in the foldable guide rails, and the upper ends of the guide rods can be embedded into the hole wall of the mounting hole in the sliding process of the guide rods. The device has the beneficial effects that the reinforcing rods are embedded into a soil layer, so that the precast block is fixed more firmly, the whole precast block is prevented from shifting downwards, the lower guide rail rotates to be in a horizontal state, the precast block and the lower guide rail are fixedly connected together, permanent lifting force is provided for the precast block through the lower guide rail, and the precast block is prevented from falling off. And the stability of the precast block after being fixed is improved.

Description

Technical Field

[0001] This invention relates to the field of precast block installation technology, and in particular to a precast concrete block clamping and transfer device. Background Technology

[0002] As a critical node in transportation, water conservancy, and municipal infrastructure, the structural safety of tunnels is paramount. Tunnel seepage refers to groundwater seeping through the lining structure, causing dampness and dripping, a typical quality defect in railway engineering. Seepage can shorten rail life, cause blockages in drainage pipes due to crystallization, and lead to icing disasters in cold regions. It also increases the carbonation rate of concrete, resulting in a decrease in the tunnel's structural load-bearing capacity. Therefore, when encountering tunnel seepage, the seepage point needs to be treated. Current technologies typically include anchor grouting reinforcement and overall soil replacement backfilling. Anchor grouting reinforcement is fast and effective, making it the mainstream method for treating seepage. However, when the soil around the seepage point is completely loose, grouting alone is insufficient. Therefore, overall replacement is necessary. During replacement, holes need to be excavated in the tunnel wall, and precast blocks are filled into these holes to seal them before grouting reinforcement is performed, thus treating the tunnel defect. Precast blocks are typically heavy and large. Existing transfer devices can move the precast blocks to a designated location, but they cannot install them in that location. Other tools are needed to assist in this process, but there are no suitable tools available in the current technology. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a precast concrete block clamping and transfer device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A precast concrete block clamping and transfer device includes a transfer vehicle equipped with a clamping device and a pushing device. The pushing device is used to push the precast block into an installation hole in the inner wall of a tunnel. Multiple foldable guide rails are embedded in the installation hole by rivets. During the precasting of the precast block, multiple guide rods are fixed on the edge of the precast block. The guide rods are arranged one-to-one with the foldable guide rails, and the guide rods can slide within the foldable guide rails. During the sliding process, the upper end of the guide rod can be embedded into the hole wall of the installation hole. After the precast block is installed in the designated position, the lower end of the foldable guide rail is folded and fixed together with the precast block, providing a permanent lifting force for the precast block.

[0005] Preferably, the foldable guide rail includes an upper guide rail and a lower guide rail, which are hinged together by a hinge.

[0006] Preferably, an upper guide groove is provided on one side of the upper guide rail, and an opening is provided on the upper guide groove. A reinforcing rod is hinged in the opening, and the side of the reinforcing rod facing the guide groove is inclined.

[0007] Preferably, a lower guide groove is provided on one side of the lower guide rail, and a clearance hole is provided on the lower guide groove. An embedded part is provided at the bottom of the precast block, and the embedded part is detachably fixed to the lower guide rail at the clearance hole.

[0008] Preferably, the embedded part includes a metal plate embedded in the precast block, and a plurality of studs are fixedly connected to the metal plate. The studs pass through clearance holes and are fixed together with the lower guide rail by nuts.

[0009] Preferably, a groove is provided on one side of the lower guide rail, and a sliding rod is slidably connected in the groove. A fixing hole is provided on the inner wall of the mounting hole, so that when the lower guide rail is fixed together with the embedded part, the sliding rod can be inserted into the fixing hole.

[0010] Preferably, the guide rod is provided with a slurry flow groove around its perimeter.

[0011] The beneficial effects of this invention are as follows: By embedding the reinforcing rod into the soil layer, the precast block is more firmly fixed, preventing it from shifting downwards as a whole. The lower guide rail rotates to a horizontal state, so that the precast block is fixedly connected to the lower guide rail. Thus, the lower guide rail provides a permanent lifting force to the precast block, improving the stability of the precast block after it is fixed. Attached Figure Description

[0012] Figure 1 This is a basic structural diagram of a precast concrete block clamping and transfer device provided by the present invention; Figure 2 This is an exploded view of the basic structure of a precast concrete block clamping and transfer device provided by the present invention; Figure 3 This is a diagram showing the state of the precast blocks after installation. Figure 4 yes Figure 3 A three-dimensional image; Figure 5 This is a diagram showing the usage status of the foldable guide rail. Figure 6 yes Figure 2 Enlarged view of point A. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0014] like Figures 1-6As shown in the figure, a concrete precast block clamping and transfer device of this embodiment includes a transfer vehicle, on which a clamping device and a pushing device are installed. The transfer vehicle, the clamping device and the pushing device are all prior art, and their structure and working principle are also prior art, and will not be described in detail here.

[0015] The clamping device is used to clamp the precast blocks, the transfer vehicle is used to move the precast blocks to a designated location, and the pushing device is used to push the precast blocks 2 into the mounting holes 300 in the inner wall of the tunnel.

[0016] Multiple foldable guide rails 1 are embedded in the mounting hole 300 by rivets. When prefabricating the precast block 2, multiple guide rods 3 are fixed on the edge of the precast block 2. The guide rods 3 are set one-to-one with the foldable guide rails 1, and the guide rods 3 can slide in the foldable guide rails 1. During the sliding process, the upper end of the guide rod 3 can be embedded into the hole wall of the mounting hole 300. After the precast block 2 is installed in the designated position, the lower end of the foldable guide rail 1 is folded and fixed together with the precast block 2, providing a permanent lifting force for the precast block 2.

[0017] To achieve the above objectives, this embodiment is designed as follows: The foldable guide rail 1 includes an upper guide rail 11 and a lower guide rail 13, which are hinged together by a hinge 12. The hinge 12 is prior art and will not be described in detail here. An upper guide groove is provided on one side of the upper guide rail 11, and a lower guide groove is provided on one side of the lower guide rail 13. The upper and lower guide grooves are correspondingly arranged, and the guide rod 3 can move sequentially on the lower and upper guide grooves. An opening is provided in the upper guide groove, and a reinforcing rod 111 is hinged within the opening. The side of the reinforcing rod 111 facing the guide groove is inclined. As the guide rod 3 moves upward within the upper guide groove, it exerts a compressive force on the reinforcing rod 111, causing the guide rod 3 to rotate outward. This allows the reinforcing rod 111 to embed into the inner wall of the mounting hole 300. Specifically, the inner wall of the tunnel consists of a reinforcing layer 100 and a soil layer 200 from the inside out. During use, the upper end of the upper guide rail 11 is located in the soil layer 200, meaning the reinforcing rod 111 will eventually embed into the soil layer 200. This ensures that the precast block 2 is more firmly fixed, preventing it from shifting downwards as a whole.

[0018] A clearance hole 132 is provided on the lower guide groove, and an embedded part is provided at the bottom of the precast block 2. The embedded part is detachably fixed to the lower guide rail 13 at the clearance hole 132. Specifically, the embedded part includes a metal plate 4 embedded in the precast block 2. Multiple studs 41 are fixedly connected to the metal plate 4. The studs 41 pass through the clearance hole 132 and are fixed to the lower guide rail 13 by nuts. After the upper surface of the precast block 2 is flush with the inner side of the reinforcing layer 100, the lower guide rail 13 rotates 90 degrees, so that the precast block 2 is fixedly connected to the lower guide rail 13, thereby providing a permanent lifting force to the precast block 2 through the lower guide rail 13. To ensure the lower guide rail 13 provides better support and thus makes the precast block 2 more stable, in this embodiment, a groove is provided on one side of the lower guide rail 13, and a sliding rod 131 is slidably connected within the groove. Simultaneously, a fixing hole is provided on the inner wall of the mounting hole 300. When the lower guide rail 13 is fixed together with the embedded part, the sliding rod 131 can be inserted into the fixing hole. Thus, the sliding rod 131 further stabilizes the position of the lower guide rail 13, effectively preventing deformation and further improving the stability of the precast block 2. After the precast block 2 is installed and fixed, grout is injected into the gap between the precast block 2 and the mounting hole 300, so that the precast block forms an integral whole with the surrounding reinforcement layer 100 and soil layer 200. In order to facilitate the flow of grout, grout flow channels 31 are provided around the guide rod 3. The grout can flow to the surrounding area through the grout flow channels 31, which can avoid local voids during grouting.

Claims

1. A clamping and transferring device for precast concrete blocks, characterized in that: The system includes a transfer vehicle equipped with a clamping device and a pushing device. The pushing device is used to push the precast block (2) into the mounting hole (300) on the inner wall of the tunnel. Multiple foldable guide rails (1) are embedded in the mounting hole (300) by rivets. When the precast block (2) is precast, multiple guide rods (3) are fixed on the edge of the precast block (2). The guide rods (3) are set one-to-one with the foldable guide rails (1), and the guide rods (3) can slide in the foldable guide rails (1). During the sliding process, the upper end of the guide rods (3) can be embedded into the hole wall of the mounting hole (300). After the precast block (2) is installed in the designated position, the lower end of the foldable guide rail (1) is folded and fixed together with the precast block (2) to provide a permanent lifting force for the precast block (2).

2. The precast concrete block clamping and transfer device according to claim 1, characterized in that: The foldable guide rail (1) includes an upper guide rail (11) and a lower guide rail (13), which are hinged together by a hinge (12).

3. The precast concrete block clamping and transfer device according to claim 2, characterized in that: The upper guide rail (11) has an upper guide groove on one side, and an opening is provided on the upper guide groove. A reinforcing rod (111) is hinged in the opening, and the side of the reinforcing rod (111) facing the guide groove is an inclined surface.

4. The precast concrete block clamping and transfer device according to claim 2, characterized in that: The lower guide rail (13) has a lower guide groove on one side, and a clearance hole (132) is provided on the lower guide groove. The precast block (2) has an embedded part at the bottom, and the embedded part is detachably fixed to the lower guide rail (13) at the clearance hole (132).

5. The precast concrete block clamping and transfer device according to claim 4, characterized in that: The embedded part includes a metal plate (4) embedded in the precast block (2), and a plurality of studs (41) are fixedly connected to the metal plate (4). The studs (41) pass through the relief hole (132) and are fixed together with the lower guide rail (13) by nuts.

6. The precast concrete block clamping and transfer device according to claim 4, characterized in that: The lower guide rail (13) has a groove on one side, and a sliding rod (131) is slidably connected in the groove. The mounting hole (300) has a fixing hole on its inner wall. When the lower guide rail (13) is fixed together with the embedded part, the sliding rod (131) can be inserted into the fixing hole.

7. The precast concrete block clamping and transfer device according to claim 1, characterized in that: The guide rod (3) is provided with slurry flow channels (31) around its perimeter.

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