Demoulding and hoisting device for shield segment production

Abstract

The utility model discloses a demoulding hoisting device for shield segment production, which comprises a hoisting platform, a vacuum chuck and a protective claw hook are rotatably mounted below the hoisting platform, and the vacuum chuck comprises a middle chuck positioned in the middle of the hoisting platform and side chucks positioned on two sides of the middle chuck; the protective grabber comprises middle grabber bodies located outside the two ends of the middle suction cup and side grabber bodies located outside the two ends of the side suction cup, and the middle grabber bodies and the side grabber bodies rotate outwards to be lifted through an air cylinder driving mechanism and are locked by the air cylinder driving mechanism after being restored to be in the vertical state under the action of the gravity of the middle grabber bodies and the side grabber bodies. According to the utility model, the protective grabber is additionally arranged on the basis of the vacuum chuck, so that a good protective effect is achieved in the process of hoisting the shield segment.

Description

Technical Field

[0001] This utility model relates to a hoisting device, and more particularly to a demolding hoisting device for the production of tunnel segments. Background Technology

[0002] Tunnel boring machine (TBM) segments are the main assembly components in TBM construction, and their quality directly affects the overall quality and safety of the tunnel. During production, TBM segments are fabricated in molds. After fabrication, they are removed and transported using hoisting equipment. Currently, most manufacturers use vacuum suction cups as hoisting equipment. During removal, the vacuum suction cup is placed against the outer surface of the TBM segment in the mold. A vacuum pump is activated, creating a vacuum in the vacuum accumulator. When suction is needed, the vacuum accumulator is connected to the inner cavity of the vacuum suction cup, creating a pressure difference between the inner cavity and the external atmospheric pressure, thus lifting the TBM segment. However, practical use has revealed that relying solely on vacuum suction cups for lifting lacks adequate safety measures. For example, in the event of a sudden power outage or equipment malfunction, the vacuum suction cup may lose its suction capacity, causing the TBM segment to detach, posing a significant safety hazard. Utility Model Content

[0003] The purpose of this utility model is to provide a demolding and hoisting device for the production of tunnel segments, which adds a protective claw hook to the vacuum suction cup, and plays a good protective role in the process of hoisting and transporting tunnel segments.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A demolding and hoisting device for tunnel segment production includes a hoisting platform. Vacuum suction cups and protective claw hooks are rotatably mounted below the hoisting platform. The vacuum suction cups include a central suction cup located in the middle of the hoisting platform and side suction cups located on either side of the central suction cup. The protective claw hooks include a central claw hook located outside both ends of the central suction cup and a side claw hook located outside both ends of the side suction cups. The central claw hook and the side claw hooks are rotated outwards and lifted by a cylinder-driven mechanism, and then locked by the cylinder-driven mechanism after returning to a vertical state under their own gravity.

[0006] The advantages of this utility model are:

[0007] This invention uses a vacuum suction cup to lift the tunnel boring machine (TBM) segments while simultaneously employing protective claw hooks to provide excellent protection for the segments. In the event of a sudden power outage or equipment malfunction, even if the vacuum suction cup loses its suction capacity and the TBM segments fall, the protective claw hooks will firmly hold the segments in place, ensuring effective protection during the lifting and transportation of the TBM segments and guaranteeing production safety. Attached Figure Description

[0008] Figure 1 This is a three-dimensional schematic diagram of the demolding and hoisting device of this utility model.

[0009] Figure 2 This is the front view of the demolding and hoisting device of this utility model (the protective claw hook is not open).

[0010] Figure 3 This is a side view of the demolding and hoisting device of this utility model.

[0011] Figure 4 yes Figure 2 The diagram shows the protective claw hook after it has been opened.

[0012] Figure 5 This is an instruction diagram for the demolding and hoisting device of this utility model. Detailed Implementation

[0013] like Figures 1 to 5 As shown, this utility model proposes a demolding and hoisting device for shield tunnel segment production, which includes a hoisting platform 10. Vacuum suction cups and protective claw hooks are rotatably installed below the hoisting platform 10. The vacuum suction cups include a central suction cup 21 located in the middle of the hoisting platform 10 and side suction cups 22 located on both sides of the central suction cup 21. The protective claw hooks include a central claw hook 31 located outside both ends of the central suction cup 21 and a side claw hook 32 located outside both ends of the side suction cups 22. The central claw hook 31 and the side claw hook 32 are rotated outward and lifted by a cylinder drive mechanism. After returning to a vertical state under their own gravity, they are locked by the cylinder drive mechanism.

[0014] In actual use, the hoisting platform 10 can be slidably installed on the hoisting beam via connectors to achieve hoisting.

[0015] like Figure 1 The hoisting platform 10 includes two parallel central longitudinal beams 11, and a side longitudinal beam 12 is provided on each side of the two central longitudinal beams 11. The central longitudinal beams 11 and the side longitudinal beams 12 are connected by two parallel cross beams 13, which are perpendicular to the central longitudinal beams 11 and the side longitudinal beams 12.

[0016] In actual design, the structure of the hoisting platform 10 is not subject to the above restrictions, and the configuration of the central longitudinal beam 11, side longitudinal beams 12, and cross beams 13 can vary widely, not limited to those shown in the figure, as long as it provides installation and operating space for the protective claw hooks and vacuum suction cups. For example, as... Figure 5 The longitudinal beam 11 and side longitudinal beam 12 shown in the figure include L-shaped profiles. Protective claw hooks are pinned to the L-shaped profiles. A top plate is welded to the top surface of the L-shaped profiles, and reinforcing sealing plates are welded to both ends of the L-shaped profiles. The reinforcing sealing plates have elongated through holes for the protective claw hooks to pass through. Additionally, the L-shaped profiles have holes for the crossbeam 13 to pass through. Furthermore, Figure 5The crossbeam 13 shown is a hollow square steel tube, with the two ends of the tube sealed with sealing plates.

[0017] like Figures 1 to 5 The side suction cup 22 is connected to the crossbeam 13 via the first rotating component 40. The first rotating component 40 includes a first suction cup connecting plate 41. Each crossbeam 13 is connected to a first suction cup connecting plate 41. A first connecting shaft 43 is installed on both first suction cup connecting plates 41. A first mounting plate 42 is rotatably installed on the first connecting shaft 43. The first mounting plate 42 is fixed to the side suction cup 22. The side suction cup 22 can rotate around the first connecting shaft 43 by means of the first mounting plate 42 to closely adhere to the surfaces of the shield tunnel segments with different inclinations and improve the suction force. Figure 1 The illustration shows a case where a first mounting plate 42 is installed at each end of the first connecting shaft 43.

[0018] Furthermore, the central suction cup 21 is connected to the crossbeam 13 via a second rotating component 70. The second rotating component 70 includes a second suction cup connecting plate 71, with each crossbeam 13 connected to a second suction cup connecting plate 71. A second connecting shaft 73 is mounted on both second suction cup connecting plates 71. A second mounting plate 72 is rotatably mounted on the second connecting shaft 73. The second mounting plate 72 is fixed to the central suction cup 21, allowing the central suction cup 21 to rotate around the second connecting shaft 73 via the second mounting plate 72, thus adhering closely to the surfaces of the tunnel segments at different inclinations and enhancing the suction force. Similar to the side suction cups 22, a second mounting plate 72 is typically mounted at each end of the second connecting shaft 73.

[0019] A preferred design is that the second suction cup connecting plate 71 of the second rotating component 70 has protruding abutment tops 710 on both sides of its top, making the second suction cup connecting plate 71 T-shaped. Two top bars 79 are separately provided on the crossbeam 13, and sealing plates 76 are provided on the outer sides of the two top bars 79. A vertically penetrating sliding space is formed between the sealing plates 76, the two top bars 79, and the crossbeam 13, allowing the second suction cup connecting plate 71 to slide vertically through the sliding space. Positioning nuts 74 are fixed to the abutment tops 710 extending upwards from the second suction cup connecting plate 71 into the sliding space. Adjusting bolts 75 are movably screwed onto the positioning nuts 74. The portion of the adjusting bolt 75 extending downwards from the abutment top 710 abuts against the corresponding top bar 79. By adjusting the tightness of the adjusting bolts 75 screwed onto the positioning nuts 74, the lifting height of the abutment top 710 on the top bar 79 is changed, thus adjusting the height of the second suction cup connecting plate 71, thereby adjusting the height of the central suction cup 21. The second suction cup connecting plate 71 is provided with a positioning hole (not shown in the figure), and the sealing plate 76 is provided with a hole. A locking nut 78 is fixed in the hole, and a locking bolt 77 is movably screwed onto the locking nut 78. The locking bolt 77 is used to extend into the corresponding positioning hole on the second suction cup connecting plate 71 through the hole on the sealing plate 76 after the height of the second suction cup connecting plate 71 is adjusted by adjusting the degree of screwing with the locking nut 78, so as to lock the height of the second suction cup connecting plate 71.

[0020] In the actual design, the second suction cup connecting plate 71 can be provided with multiple positioning holes in the vertical direction, and the sealing plate 76 can be provided with at least one hole as appropriate. Each hole is fixed with a locking nut 78 and movably screwed with a locking bolt 77.

[0021] In this invention, the height of the central suction cup 21 is adjustable, enabling the invention to meet the adsorption and lifting requirements of shield tunnel segments with different curvatures.

[0022] In actual control, the central suction cup 21 and the side suction cup 22 are synchronously controlled by an adsorption control device, which includes a vacuum pump and a vacuum accumulator.

[0023] In this invention, the adsorption control device is an existing device in the field. Typically, the adsorption control device includes a vacuum pump, which is connected to a vacuum accumulator via an air pipe. The vacuum accumulator is connected to the inner cavities of the central suction cup 21 and the side suction cup 22 via a vent pipe, and a solenoid valve is installed on the vent pipe. In use, the central suction cup 21 and the side suction cup 22 are pressed tightly against the outer surface of the shield tunnel segment. Then, the vacuum pump is started to evacuate the vacuum accumulator. When adsorption is needed, the solenoid valve is opened, connecting the vacuum accumulator with the inner cavities of the central suction cup 21 and the side suction cup 22. This creates a pressure difference between the air pressure inside the central suction cup 21 and the side suction cup 22 and the external atmosphere, thus allowing the central suction cup 21 and the side suction cup 22 to adsorb the shield tunnel segment and lift it.

[0024] In the actual design, the cylinder drive mechanism includes a first drive mechanism 50 and a second drive mechanism 60, wherein: the first drive mechanism 50 includes a first cylinder 51, the piston rod of the head of the first cylinder 51 is equipped with a first connecting piece (Y-type connecting piece) 52, the first connecting piece 52 is pinned to the upper part of the middle claw hook 31 by a pin 80, the tail of the first cylinder 51 is pinned to the first connecting seat (slanted ear seat) 53 fixed on the middle longitudinal beam 11 by a pin 80, the top of the middle claw hook 31 is pinned to the middle longitudinal beam 11 by a pin 80, and the first drive mechanism 50 and the middle claw hook 60 are connected to each other. 1. A triangular arrangement is formed between the middle longitudinal beams 11; the second drive mechanism 60 includes a second cylinder 61, the piston rod of the head of the second cylinder 61 is equipped with a second connector (Y-type connector) 62, the second connector 62 is pinned to the upper part of the side claw hook 32 by a pin 80, the tail of the second cylinder 61 is pinned to the second connecting seat (oblique ear seat) 63 fixed on the side longitudinal beam 12 by a pin 80, the top of the side claw hook 32 is pinned to the side longitudinal beam 12 by a pin 80, and the second drive mechanism 60, the side claw hook 32, and the side longitudinal beam 12 form a triangular arrangement.

[0025] like Figure 1 Each side longitudinal beam 12 has a rotatable claw hook 32 mounted on both ends, and the two side claw hooks 32 form a pair. Each side claw hook 32 is equipped with a second drive mechanism 60. Each middle longitudinal beam 11 has a rotatable central claw hook 31 mounted on both ends. Two central claw hooks 31 at the same end are connected as one unit by a claw hook connecting plate 310. One of the two central claw hooks 31 connected as one unit is equipped with a first drive mechanism 50. The four central claw hooks 31 form a group.

[0026] In actual control, each first cylinder 51 and each second cylinder 61 are synchronously driven by the pneumatic control device. Specifically, the first cylinder 51 and the second cylinder 61 are locking cylinders. These cylinders are used to lift the central claw hook 31 and the side claw hook 32 outwards by pushing them with their piston rods. Once lifted to the correct position, the pneumatic control device disengages the drive to the locking cylinders, allowing the central claw hook 31 and the side claw hook 32 to return to their original vertical position under their own weight. At this point, the locking cylinders engage a locking action, locking the positions of the central claw hook 31 and the side claw hook 32. This reduces the cylinders' prolonged exposure to load, lowers the failure rate, and extends their service life.

[0027] In this invention, the pneumatic control device and locking cylinder are well-known in the art, and therefore will not be described in detail here. The first cylinder 51 and the second cylinder 61 are miniature cylinders, which will not increase the overall weight.

[0028] In this invention, the protective claw hook adopts the above-mentioned pneumatic drive and reset self-locking mechanism, which effectively ensures the stable support of the tunnel segment without the need for manual intervention, thereby improving production efficiency.

[0029] like Figure 1 The height of the middle claw hook 31 is less than the height of the side claw hook 32, that is, there is a height difference between the middle claw hook 31 and the side claw hook 32. This design makes the present invention applicable to shield tunnel segments of different specifications and sizes.

[0030] In the actual design, the central claw hook 31 and the side claw hooks 32 are made of steel. Furthermore, the central claw hook 31 and the side claw hooks 32 in this invention are evenly arranged under the hoisting platform 10, providing strong impact resistance and good load-bearing capacity. In the event of an accident, if a tunnel segment falls onto the protective claw hook, the protective claw hook provides uniform support to the tunnel segment. Here, when the vacuum suction cup holds the tunnel segment and the tunnel segment does not fall, there is a gap between the hook of the protective claw hook and the tunnel segment above it (e.g., ...). Figure 5 ).

[0031] When the tunnel segment 90 is completed in the tunnel segment mold and needs to be removed and hoisted, the first cylinder 51 and the second cylinder 61 are driven by the pneumatic control device, causing their piston rods to press against the central claw hook 31 and the side claw hook 32, causing the central claw hook 31 and the side claw hook 32 to rotate outward and lift. At this time, the entire protective claw hook is in an open state, as... Figure 4 As shown. Then, the central suction cup 21 and the side suction cup 22 are made to adhere tightly to the outer surface of the shield segment 90. The vacuum pump is started, and the vacuum pump evacuates the vacuum accumulator. Then, the solenoid valve is opened, connecting the vacuum accumulator with the inner cavity of the central suction cup 21 and the side suction cup 22, so that the central suction cup 21 and the side suction cup 22 adsorb the shield segment 90, thus lifting the shield segment 90. Then, the pneumatic control device is deactivated, and the central claw hook 31 and the side claw hook 32 return to their original vertical state under their own gravity (as shown). Figure 2 and Figure 5 At this time, the first cylinder 51 and the second cylinder 61 lock themselves, locking the positions of the middle claw hook 31 and the side claw hook 32. At this time, there is a gap between the hooks of the middle claw hook 31 and the side claw hook 32 and the shield tunnel segment 90. Figure 5 Therefore, the tunnel segment 90 can be transported.

[0032] During hoisting, if a sudden power outage or equipment malfunction occurs in the workshop, the vacuum suction cup may lose its suction capacity, causing the tunnel segment to fall. However, due to the design of the protective claw hooks, such as... Figure 5 As shown, the falling tunnel segment 90 will be firmly held in place by the central claw hook 31 and the side claw hook 32. It can be seen that the protective claw hooks play a good protective role and ensure production safety.

[0033] The advantages of this utility model are:

[0034] This invention uses a vacuum suction cup to lift the tunnel boring machine (TBM) segments while simultaneously employing protective claw hooks to provide excellent protection for the segments. In the event of a sudden power outage or equipment malfunction, even if the vacuum suction cup loses its suction capacity and the TBM segments fall, the protective claw hooks will firmly hold the segments in place, ensuring effective protection during the lifting and transportation of the TBM segments and guaranteeing production safety.

[0035] The above describes the preferred embodiment of this utility model and the technical principles used therein. For those skilled in the art, any obvious changes such as equivalent transformations or simple substitutions based on the technical solution of this utility model without departing from the spirit and scope of this utility model shall fall within the protection scope of this utility model.

Claims

1. A demolding and hoisting device for shield segment production, characterized in that, The lifting platform is provided with vacuum suction cups and protective claw hooks rotatably installed below the lifting platform, wherein the vacuum suction cups include middle suction cups in the middle of the lifting platform and side suction cups on both sides of the middle suction cups; the protective claw hooks include middle claw hooks outside both ends of the middle suction cups and side claw hooks outside both ends of the side suction cups, and the middle claw hooks and the side claw hooks are driven to rotate outward by a cylinder driving mechanism and are locked by the cylinder driving mechanism after being restored to a vertical state under the action of their own gravity.

2. The mold release hoisting device for shield segment production according to claim 1, wherein The lifting platform includes two parallel middle longitudinal beams, and each of the two middle longitudinal beams is provided with a side longitudinal beam in parallel on both sides.

3. The mold release hoisting device for shield segment production according to claim 2, wherein The side suction cups are connected with the cross beams through first rotating members, wherein the first rotating members include first suction cup connecting plates, each of the cross beams is connected with a first suction cup connecting plate, a first connecting shaft is commonly installed on the two first suction cup connecting plates, a first assembly plate is rotatably installed on the first connecting shaft, and the first assembly plate is fixed with the side suction cups.

4. The mold release hoisting device for shield segment production according to claim 2, wherein The middle suction cups are connected with the cross beams through second rotating members, wherein the second rotating members include second suction cup connecting plates, each of the cross beams is connected with a second suction cup connecting plate, a second connecting shaft is commonly installed on the two second suction cup connecting plates, a second assembly plate is rotatably installed on the second connecting shaft, and the second assembly plate is fixed with the middle suction cups.

5. The mold release hoisting device for shield segment production according to claim 4, wherein The second suction cup connecting plates are provided with abutting top portions on both sides of the top portions, and the second suction cup connecting plates are in T shape; two top strips are separately provided on the cross beams, and outer sides of the two top strips are provided with sealing plates; a sliding space is formed between the sealing plates, the two top strips and the cross beams, and the second suction cup connecting plates can slide up and down through the sliding space; positioning nuts are fixed on the abutting top portions of each of the second suction cup connecting plates which extend upward out of the sliding space, adjusting bolts are movably screwed on the positioning nuts and abut against corresponding top strips; positioning holes are provided on the second suction cup connecting plates, and a hole is provided on the sealing plate, a locking nut is fixed on the hole, a locking bolt is movably screwed on the locking nut, and the locking bolt is used to extend into the corresponding positioning hole on the second suction cup connecting plate after the height of the second suction cup connecting plate is adjusted to lock the height of the second suction cup connecting plate.

6. The mold release hoisting device for shield segment production according to claim 2, wherein The middle suction cups and the side suction cups are synchronously controlled by suction control devices, wherein the suction control devices include vacuum pumps and vacuum accumulators.

7. The mold release hoisting device for shield segment production according to claim 2, wherein The cylinder driving mechanism comprises a first driving mechanism and a second driving mechanism, wherein: the first driving mechanism comprises a first cylinder, a first connecting piece is installed on the piston rod of the head of the first cylinder, the first connecting piece is connected with the middle claw hook pin, and the tail of the first cylinder is connected with a first connecting seat fixed on the middle longitudinal beam; the second driving mechanism comprises a second cylinder, a second connecting piece is installed on the piston rod of the head of the second cylinder, the second connecting piece is connected with the side claw hook pin, and the tail of the second cylinder is connected with a second connecting seat fixed on the side longitudinal beam.

8. The mold release hoisting device for shield segment production according to claim 7, wherein Each side longitudinal beam is rotatably installed with a side claw hook at both ends, and each side claw hook is configured with a second driving mechanism; each middle longitudinal beam is rotatably installed with a middle claw hook at both ends, two middle claw hooks at the same end are connected into one through a claw hook connecting plate, and one of the two connected middle claw hooks is configured with a first driving mechanism.

9. The mold release hoisting device for shield segment production according to claim 8, wherein Each first cylinder and each second cylinder is synchronously driven by a pneumatic control device, wherein: the first cylinder and the second cylinder are locking cylinders.

10. The mold release hoisting device for shield segment production according to claim 8, wherein The height of the middle claw hook is less than the height of the side claw hook.

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