Special lifting appliance for demolding of TBM inverted arch precast block

Abstract

The utility model discloses a special lifting appliance for demoulding of a TBM (Tunnel Boring Machine) inverted arch precast block, which relates to the technical field of TBM inverted arch precast blocks and comprises a cross beam, vertical beams are arranged at two ends of the cross beam, lower lifting seats are arranged at the outer side ends of the two vertical beams, lower lifting steel cables are arranged at the lower ends of the lower lifting seats, lifting hooks are arranged at the lower ends of the four lower lifting steel cables, and the lifting hooks are arranged on the cross beam. A rotating shaft seat is arranged in the middle of the upper surface of the cross beam, a hoisting beam is arranged on the upper surface of the rotating shaft seat, upper hoisting seats are arranged on the outer surfaces of the two sides of the outer side end of the hoisting beam, and an upper hoisting steel cable is connected between the two upper hoisting seats. And it is guaranteed that the inverted arch precast block is separated from the mold through vertical lifting, a worker can conveniently adjust the lifted precast block, and damage to the precast block caused by collision between the precast block and the mold is avoided.

Description

Technical Field

[0001] This utility model relates to the field of TBM inverted arch precast block technology, specifically to a special lifting tool for demolding TBM inverted arch precast blocks. Background Technology

[0002] With the rapid development of tunnel construction in China, the invert arch, as a permanent structure at the bottom of the tunnel, is an important component of the tunnel structure. As TBM (Tunnel Boring Machine) tunnel construction technology matures year by year, precast invert arch blocks, as a supporting construction technology for TBMs, are also gradually becoming standard. Precast invert arch blocks represent a departure from the traditional cast-in-place construction method, employing factory prefabrication and on-site installation. This allows tunnel invert arch construction to proceed via prefabrication and installation, minimizing construction interference, schedule delays, and quality issues caused by on-site concrete pouring. After the precast invert arch blocks are poured, specialized lifting equipment is needed to hoist them, ensuring vertical lifting to detach the precast invert arch blocks from the mold. Utility Model Content

[0003] The purpose of this utility model is to provide a special lifting tool for demolding TBM invert precast blocks, so as to solve the problem mentioned in the background art that after the invert precast blocks are poured, a special lifting tool is needed to lift the precast blocks to ensure vertical lifting so that the invert precast blocks are separated from the mold.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a special lifting tool for demolding precast TBM invert blocks, comprising a crossbeam, with vertical beams at both ends of the crossbeam, a lower lifting seat at the outer end of each of the two vertical beams, a lower lifting steel cable at the lower end of each of the lower lifting seats, and lifting hooks at the lower ends of the four lower lifting steel cables. A pivot seat is provided at the middle position of the upper surface of the crossbeam, and a lifting beam is provided on the upper surface of the pivot seat. Upper lifting seats are provided on both outer surfaces of the outer ends of the lifting beams, and upper lifting steel cables are connected between the two upper lifting seats.

[0005] Preferably, reinforcing plates are fixedly connected to the upper and lower surfaces of the position where the crossbeam connects with the two vertical beams, the crossbeam and the two vertical beams form an I-shaped structure, and end plates are provided at the outer ends of the crossbeam, the vertical beams and the hoisting beam.

[0006] Preferably, both the interior of the lower lifting base and the interior of the upper lifting base are connected with lifting pins, and the lower lifting steel cable and the upper lifting steel cable are fixedly connected after being wrapped with the lifting pins.

[0007] Preferably, the upper lifting base has two sets of two plate structures in each set, and the upper lifting base is fixedly connected to the outer surface of the lifting beam by welding, and the outer surface of the upper lifting base is provided with reinforcing ribs.

[0008] Preferably, the lower lifting base includes four groups of two plate structures in each group, and the lower lifting base is sleeved with the vertical beam and fixedly connected by welding.

[0009] Compared with the prior art, the beneficial effects of this utility model are: after the precast blocks of the invert arch are poured, the precast blocks are hoisted by special lifting tools to ensure vertical lifting so that the precast blocks of the invert arch are separated from the mold, which makes it convenient for workers to adjust the precast blocks after hoisting and avoids damage to the precast blocks caused by collision between the precast blocks and the mold. Attached Figure Description

[0010] Figure 1 This is an isometric view of the main structure of this utility model;

[0011] Figure 2 This is a front view schematic diagram of the main structure of this utility model;

[0012] Figure 3 This is a left-side view of the main structure of this utility model;

[0013] Figure 4 This is a top view of the main structure of this utility model.

[0014] In the diagram: 1-Horizontal beam, 2-Vertical beam, 3-Lower lifting seat, 4-Lower lifting cable, 5-Lifting hook, 6-Spindle seat, 7-Lifting beam, 8-Upper lifting seat, 9-Upper lifting cable, 10-Reinforcing plate, 11-End plate, 12-Lifting pin, 13-Reinforcing rib. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-4 This utility model provides a special lifting tool for demolding precast TBM invert arch blocks, including a crossbeam 1, with vertical beams 2 at both ends of the crossbeam 1, and a lower lifting seat 3 at the outer end of each of the two vertical beams 2. A lower lifting steel cable 4 is provided at the lower end of each of the lower lifting seats 3, and a lifting hook 5 is provided at the lower end of each of the four lower lifting steel cables 4. A pivot seat 6 is provided at the middle position of the upper surface of the crossbeam 1, and a lifting beam 7 is provided on the upper surface of the pivot seat 6. Upper lifting seats 8 are provided on both outer surfaces of the outer ends of the lifting beam 7, and an upper lifting steel cable 9 is connected between the two upper lifting seats 8.

[0017] In use, the crossbeam 1 and two vertical beams 2 form an I-shaped structure. A lower lifting seat 3 is set at the outer end of the two vertical beams 2. The upper end of the lower lifting steel cable 4 is set inside the lower lifting seat 3, and a lifting hook 5 is set at the lower end of the lower lifting steel cable 4. The lifting hook 5 is hooked to the pre-embedded lifting hole of the precast block. The lifting beam 7 is rotatably connected to the upper surface of the crossbeam 1 through the swivel seat 6. An upper lifting seat 8 is set at the outer end of the lifting beam 7. An upper lifting steel cable 9 is set between the two upper lifting seats 8. The entire lifting device is hooked to the upper lifting equipment through the upper lifting steel cable 9. The precast block is hoisted and connected to the lifting equipment through the special lifting device structure. The crossbeam 1 and the lifting beam 7 are rotatably connected through the swivel seat 6, so that the angle of the precast block can be adjusted, thereby hoisting and demolding the precast block.

[0018] Reinforcing plates 10 are fixedly connected to the upper and lower surfaces of the joint between the horizontal beam 1 and the two vertical beams 2. The horizontal beam 1 and the two vertical beams 2 form an I-shaped structure. End plates 11 are provided at the outer ends of the horizontal beam 1, the vertical beams 2 and the hoisting beam 7. The four hoisting hooks 5 are set to correspond to the four hoisting holes of the precast block. The vertical beams 2 are fixed to both ends of the horizontal beam 1 by the reinforcing plates 10 to improve the connection strength between the horizontal beam 1 and the vertical beams 2. The end plates 11 are provided at the outer ends of the horizontal beam 1, the vertical beams 2 and the hoisting beam 7 to seal the cavities of the horizontal beam 1, the vertical beams 2 and the hoisting beam 7 and reduce corrosion.

[0019] Lifting pins 12 are inserted into the interior of both the lower lifting base 3 and the upper lifting base 8. The lower lifting steel cable 4 and the upper lifting steel cable 9 are fixedly connected to the lifting pins 12 after being wound together. By inserting the lifting pins 12 into the interior of the lower lifting base 3 and the upper lifting base 8, the lower lifting steel cable 4 and the lower lifting base 3 can be easily disassembled, and the upper lifting steel cable 9 and the upper lifting base 8 can be easily disassembled.

[0020] The upper lifting seat 8 consists of two sets of two plate structures each. The upper lifting seat 8 is fixedly connected to the outer surface of the lifting beam 7 by welding. The outer surface of the upper lifting seat 8 is provided with reinforcing ribs 13. The upper lifting seat 8 structure designed by welding ensures the connection strength between the upper lifting seat 8 and the lifting beam 7, and the reinforcing ribs 13 improve the connection strength between the upper lifting seat 8 and the lifting beam 7.

[0021] The lower lifting seat 3 includes four sets of two plate structures in each set. The lower lifting seat 3 is sleeved with the vertical beam 2 and fixedly connected by welding. By setting the lower lifting seat 3 structure that is sleeved and fixed by welding, the connection strength between the lower lifting seat 3 and the vertical beam 2 is ensured.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A TBM inverted arch prefabricated block demolding special lifting appliance, characterized in that: The utility model provides a kind of lifting device, including crossbeam (1), the outer side end of two vertical girders (2) is equipped with lower lifting seat (3) in both ends of crossbeam (1), the lower end of lower lifting seat (3) is equipped with lower lifting steel cable (4), the lower end of four lower lifting steel cables (4) is equipped with lifting hook (5), the upper surface middle position of crossbeam (1) is equipped with rotating shaft seat (6), the upper surface of rotating shaft seat (6) is equipped with lifting beam (7), the outer side end both sides outer surface of lifting beam (7) is equipped with upper lifting seat (8), and upper lifting steel cable (9) is connected between two upper lifting seats (8).

2. The special lifting appliance for TBM inverted arch prefabricated block demolding according to claim 1, characterized in that: The upper surface of the position where crossbeam (1) and two vertical girders (2) meet is fixedly connected with reinforcing plate (10) up and down, and crossbeam (1) and two vertical girders (2) constitute I-shaped structure, and the outer side end of crossbeam (1), vertical girders (2) and lifting beam (7) is equipped with end plate (11).

3. The special lifting appliance for TBM inverted arch precast block demolding according to claim 1, characterized in that: The inside of lower lifting seat (3) and the inside of upper lifting seat (8) are all connected with lifting pin (12) by splicing, and lower lifting steel cable (4) and upper lifting steel cable (9) are fixedly connected after winding lifting pin (12).

4. The special lifting appliance for TBM inverted arch precast block demolding according to claim 1, characterized in that: Two groups of two plate structures are arranged in upper lifting seat (8), and the outer surface of upper lifting seat (8) is fixedly connected with lifting beam (7) by welding, and the outer surface of upper lifting seat (8) is equipped with reinforcing rib (13).

5. The special lifting appliance for TBM inverted arch precast block demolding according to claim 1, characterized in that: Lower lifting seat (3) includes four groups of two plate structures, and lower lifting seat (3) is sleeved with vertical girders (2) and fixedly connected by welding.

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