Hoisting device for secondary lining template construction in tunnel hole

Abstract

A hoisting device for construction of a secondary lining formwork in a tunnel hole comprises an excavator olecranon hook and an excavator mechanical arm, the excavator olecranon hook is installed at the front end of the excavator mechanical arm, the back of the excavator olecranon hook is connected with a hoisting rod extending forwards, and the rear end of the hoisting rod is fixedly connected with a U-shaped plate in a riding buckle mode. Two leg plates of the U-shaped plate downwards extend out of the belly part of the excavator olecranon hook and are provided with limiting holes, and limiting bolts used for connecting the U-shaped plate with the belly part of the excavator olecranon hook in a limiting mode are installed in the limiting holes in a penetrating mode; a limiting bolt penetrates through a limiting hole in one leg plate of the U-shaped plate and a limiting hole in the other leg plate of the U-shaped plate and then is locked through a flat gasket, an elastic washer and a nut, the excavator olecranon hook is fixedly limited in the U-shaped plate, the front end of the lifting rod is fixedly connected with a lifting ring, and the lifting ring is connected with a lifting hook through a steel wire rope. The hoisting device for construction of the secondary lining template in the tunnel hole is formed by detachably installing the hoisting tool on the olecranon hook of the excavator, is used for hoisting construction in the tunnel hole, and can improve the working efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of tunnel construction hoisting, specifically to a tunnel secondary lining formwork construction hoisting device. Background Technology

[0002] With the continuous acceleration of infrastructure construction in my country, tunnels are accounting for an increasingly large proportion of civil engineering projects such as water conservancy and hydropower, highways, and railways. During the construction of tunnel sections, secondary lining formwork needs to be assembled inside the tunnel for the purpose of constructing the secondary lining. However, due to the large size and weight of the secondary lining formwork, and the limited space in tunnels preventing the access of cranes and other mechanical equipment to the site, manual handling and assembly are often the only options in routine operations. This manual handling and assembly is time-consuming, inefficient, and carries high safety risks. Therefore, some construction companies have designed tunnel construction hoisting devices, and published literature has reported on several hoisting devices suitable for tunnel construction, such as:

[0003] 1. Chinese Patent: A lifting device for tunnels, Application No.: 202122937416.4, Application Date: 2021.11.27, Abstract: This utility model belongs to the technical field of auxiliary equipment for civil construction and is a lifting device for tunnels. It includes a bucket, an I-beam fixedly connected to the lower end of the bucket, and reinforcing bars fixedly connected to the upper two sides of the bucket and the ends of the I-beam away from the bucket. A U-shaped ring is fitted on one end of the I-beam, and a first frame and a second frame are slidably connected to the two sides of the I-beam respectively. A bracket is fixedly connected to the lower end of the first frame. The first iron ring is welded to both sides of the upper end of the bucket, and the second iron ring is welded to the middle of the lower end of the bucket. The user then welds the I-beam to the second iron ring, and then welds the reinforcing bars between the first iron rings. This setup only requires simple processing of the loader at the construction site. It mostly uses welding connections, which is convenient to install. The user connects the steel cable to the construction material to be lifted, and the construction material can be lifted by operating the loader bucket. The steel cable is connected to the I-beam through a U-shaped ring, making its structure more stable.

[0004] 2. Chinese Patent: A Demountable Loader Combination Lifting Tool, Application No.: 201822161282.X, Application Date: 2018.12.22, Abstract: This utility model relates to the technical field of building material handling tools, specifically to a demountable loader combination lifting tool, including a loader bucket and a load-bearing bottom beam. A limiting block is provided on the inner wall of the loader bucket with edge shovel teeth, and at least two limiting rings are provided between the limiting block and the edge shovel teeth. The load-bearing bottom beam... The outer end is located outside the loader bucket, and the inner end of the load-bearing bottom beam passes through two limiting rings in sequence and is supported on the outer side of the limiting top block; three lifting holes are opened at the upper end of the loader bucket near the edge, and steel wire ropes are installed in the lifting holes. The end of the steel wire rope connected to the middle lifting hole is connected to the position near the outer end of the load-bearing bottom beam, and the end of the steel wire rope connected to the two side lifting holes is connected to the middle position of the load-bearing bottom beam. This lifting tool can be quickly disassembled and installed, and automatically loads and unloads materials smoothly and labor-savingly, which can speed up the construction progress.

[0005] 3. Chinese Patent: A Loader Bucket with Lifting Function, Application No.: 202011539488.7, Application Date: 2020.12.23, Abstract: This invention belongs to the technical field of loader bucket equipment and discloses a loader bucket with lifting function, solving the problem that existing bucket lifting components cannot be easily disassembled and installed; its key technical points are: including a body, on the back of which a long strip-shaped mounting block is fixedly installed, and the bottom of the mounting block has a long strip-shaped T-slot opened inward. Two sets of T-shaped plates, matching the T-slot, are detachably installed inside the T-slot. A vertical lifting ring is fixedly installed at the bottom of the T-shaped plate. A horizontal bearing shaft is detachably installed on the two sets of lifting rings through a central hole. A connecting ring located between the two sets of lifting rings is detachably sleeved on the circumferential surface of the bearing shaft. Fixing nuts that fit tightly against the side walls of the lifting rings are threaded to the left and right ends of the bearing shaft. A sleeve is fixedly installed at the bottom of the connecting ring. A threaded hole is opened in the sleeve, and a hook is threadedly connected to the sleeve through the threaded hole.

[0006] Application research revealed that the aforementioned lifting device requires damaging modifications to the loader bucket, affecting its subsequent use. Therefore, a new lifting device for tunnel construction needs to be designed. Summary of the Invention

[0007] The purpose of this utility model is to provide a hoisting device for tunnel secondary lining formwork construction. This hoisting device is composed of a detachable lifting tool installed on the excavator hook commonly used in engineering construction. After disassembly, it does not affect the normal use of the excavator hook. It is installed on the excavator's mechanical arm for hoisting construction inside the tunnel, which can improve work efficiency and reduce construction safety risks.

[0008] This utility model is achieved using the following technical solution:

[0009] A hoisting device for tunnel secondary lining formwork construction includes an excavator hook and an excavator boom. The excavator hook is installed at the front end of the excavator boom. A forward-extending lifting rod is connected to the back of the excavator hook. A U-shaped plate is fixedly connected to the rear end of the lifting rod. The two legs of the U-shaped plate extend downward beyond the belly of the excavator hook, and limit holes are provided on the two legs of the U-shaped plate. Limit bolts for limiting the connection between the U-shaped plate and the belly of the excavator hook are installed in the limit holes. The limit bolts pass through the limit holes on one leg of the U-shaped plate and the limit holes on the other leg of the U-shaped plate, and are locked by a flat washer, an elastic washer, and a nut, thus fixing the excavator hook in the U-shaped plate. A lifting ring is fixedly connected to the front end of the lifting rod. The lifting ring is connected to a hook by a wire rope. The hook is used to suspend the secondary lining formwork. The lifting boom is detachably fixed and limited to the excavator hook. The excavator hook is installed at the front end of the excavator arm. The lifting boom can swing up and down with the excavator arm to realize the lifting and transfer of the secondary lining template.

[0010] A further preferred embodiment includes a pad plate placed on the underside of the excavator hook. The pad plate comprises a pad body, the shape of which matches the shape of the excavator hook's underside. A connecting lug is fixedly connected to the bottom of the pad body at a position corresponding to the limiting hole of the U-shaped plate. The connecting lug also has a corresponding limiting hole. A limiting bolt passes sequentially through the limiting holes on one leg of the U-shaped plate, the limiting holes of the connecting lug, and the limiting holes on the other leg of the U-shaped plate, and is then locked in place by a flat washer, an elastic washer, and a nut. The shape of the pad plate body matches the shape of the excavator hook's underside, and the pad plate securely limits the U-shaped plate to the excavator hook, preventing the lifting rod from slipping off the excavator hook during hoisting.

[0011] A further preferred embodiment: an anti-slip pad is placed between the pad and the belly of the excavator hook, the anti-slip pad reducing the sliding of the pad on the belly of the excavator hook.

[0012] The hoisting device for the secondary lining formwork construction inside the tunnel has a simple structure and is easy to operate. The structural materials are all leftover materials from the construction site. The hoisting rod is detachably fixed and limited to the excavator hook, serving as an extension rod for the excavator hook. It is operated by swinging up and down with the help of the excavator's mechanical arm. The secondary lining formwork is suspended through the lifting ring, wire rope and hook. It is used to transfer and hoist the secondary lining formwork inside the tunnel, reducing the intensity of manual labor, improving the quality of construction technology, and shortening the construction time. Moreover, the hoisting rod does not affect the normal use of the excavator hook after being removed, which has significant economic benefits. Attached Figure Description

[0013] Figure 1This is a schematic diagram of the hoisting state of the hoisting device for the secondary lining formwork construction inside the tunnel.

[0014] Figure 2 This is a exploded view of the hoisting device for the secondary lining formwork construction inside the tunnel.

[0015] The names corresponding to the serial numbers in the figure are:

[0016] 1. Secondary lining template; 2. Hook; 3. Wire rope; 4. Lifting ring; 5. Lifting rod; 6. Excavator hook; 7. Pad plate; 8. U-shaped plate; 9. Limit bolt; 10. Excavator robotic arm; 11. Limit hole; 12. Anti-slip mat; 13. Pad plate body; 14. Connecting lug; 15. Elastic washer; 16. Flat washer; 17. Nut. Detailed Implementation

[0017] The technical solutions of the invention will be clearly and completely described below with reference to the embodiments. The described embodiments are only a part of the present utility model, and not all of the embodiments. Example

[0018] A hoisting device for tunnel lining formwork construction includes an excavator hook 6 and an excavator boom 10. The excavator hook 6 is installed at the front end of the excavator boom 10. A forward-extending lifting rod 5 is connected to the back of the excavator hook 6. A U-shaped plate 8 is fixedly connected to the rear end of the lifting rod 5. The two legs of the U-shaped plate 8 extend downward beyond the belly of the excavator hook 6, and limit holes 11 are provided on the two legs of the U-shaped plate 8. A limiting bolt 9 is installed to limit the connection between the U-shaped plate 8 and the excavator hook 6. The limiting bolt 9 passes through the limiting hole 11 on one leg plate of the U-shaped plate 8 and the limiting hole 11 on the other leg plate of the U-shaped plate 8, and is locked by a flat washer 16, an elastic washer 15 and a nut 17, thus fixing the excavator hook 6 within the U-shaped plate 8. A lifting ring 4 is fixedly connected to the front end of the lifting rod 5. The lifting ring 4 is connected to a hook 2 by a wire rope 3. The hook 2 is used to suspend the secondary lining template 1. The lifting rod 5 and the excavator hook 6 are detachably fixed and limited. The excavator hook 6 is installed at the front end of the excavator arm 10. The lifting rod 5 can swing up and down with the excavator arm 10 to realize the lifting and transfer of the secondary lining template 1.

[0019] A pad 7 is placed on the underside of the excavator hook 6. The pad 7 includes a pad body 13, the shape of which is consistent with the shape of the underside of the excavator hook 6. A connecting lug 14 is fixedly connected to the bottom of the pad body 13 at a position corresponding to the limiting hole 11 of the U-shaped plate 8. The connecting lug 14 is also provided with a corresponding limiting hole 11. The limiting bolt 9 passes through the limiting hole 11 on one leg plate of the U-shaped plate 8, the limiting hole 11 of the connecting lug 14, and the limiting hole 11 on the other leg plate of the U-shaped plate 8, and is then locked by a flat washer 16, an elastic washer 15, and a nut 17. The shape of the pad body 13 is consistent with the shape of the underside of the excavator hook 6. The pad body 13 can stably limit the U-shaped plate 8 and the excavator hook 6, preventing the lifting rod 5 from slipping off the excavator hook 6 during the lifting process.

[0020] An anti-slip pad 12 is placed between the pad 7 and the belly of the excavator hook 6. The anti-slip pad 12 can reduce the sliding of the pad 7 on the belly of the excavator hook 6.

[0021] The above description is not intended to limit the present utility model, nor is the present utility model limited to the above examples. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should be protected by the present utility model.

Claims

1. A hoisting device for tunnel lining formwork construction, comprising an excavator hook (6) and an excavator arm (10), wherein the excavator hook (6) is installed at the front end of the excavator arm (10), characterized in that: The back of the excavator hook (6) is connected to a forward-extending lifting rod (5). The rear end of the lifting rod (5) is fixedly connected to a U-shaped plate (8). The two legs of the U-shaped plate (8) extend downward beyond the belly of the excavator hook (6). Limiting holes (11) are provided on the two legs of the U-shaped plate (8). Limiting bolts (9) for limiting the connection between the U-shaped plate (8) and the belly of the excavator hook (6) are installed in the limiting holes (11). The limiting bolts (9) pass through the limiting holes (11) on one leg of the U-shaped plate (8) and the limiting holes (11) on the other leg of the U-shaped plate (8) and are locked by a flat washer (16), an elastic washer (15) and a nut (17) to fix the excavator hook (6) in the U-shaped plate (8). The front end of the lifting rod (5) is fixedly connected to a lifting ring (4). The lifting ring (4) is connected to a hook (2) by a wire rope (3).

2. The tunnel lining formwork hoisting device according to claim 1, characterized in that: The excavator hook (6) has a pad (7) placed on its belly. The pad (7) includes a pad body (13). The shape of the pad body (13) is consistent with the shape of the belly of the excavator hook (6). The bottom of the pad body (13) is fixedly connected to the corresponding position of the limiting hole (11) of the U-shaped plate (8). The connecting ear (14) is also provided with a limiting hole (11). The limiting bolt (9) passes through the limiting hole (11) on one leg plate of the U-shaped plate (8), the limiting hole (11) of the connecting ear (14), and the limiting hole (11) on the other leg plate of the U-shaped plate (8) in sequence, and is then locked by a flat washer (16), an elastic washer (15), and a nut (17).

3. The tunnel lining formwork hoisting device according to claim 2, characterized in that: An anti-slip mat (12) is placed between the pad (7) and the belly of the excavator hook (6).

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