Tunnel engineering secondary lining steel bar feeding and distributing device

Abstract

The utility model provides a tunnel engineering secondary lining steel bar feeding and arranging device, relates to the steel bar feeding and arranging technology, and particularly discloses a trolley structure, a suspension arm structure is installed at the top of a trolley, a traction rope is installed at the telescopic end of the suspension arm structure, and a lifting structure is installed at the end of the traction rope. A conveying structure used for conveying reinforcing steel bars is arranged at the top of the trolley structure, a lifting structure used for controlling the horizontal height of the suspension arm is arranged on the trolley structure, a position adjusting structure is installed between the lifting structure and the suspension arm structure and used for driving the suspension arm structure to rotate, and materials are automatically conveyed through the conveying structure. Mechanical suspension carrying replaces a large amount of traditional manual carrying and lifting, the manual operation intensity is greatly reduced, the manual operation time is greatly shortened, the conveying structure achieves automatic forward feeding of the reinforcing steel bars, seamless connection with the lifting operation of the suspension arm is achieved, the waiting time is shortened, and the continuity of the operation process is kept; the device can meet the rib arrangement requirements of positions such as different section shapes, vaults and side walls of tunnels.

Description

Technical Field

[0001] This utility model relates to the field of steel bar feeding and placement technology, and more specifically, to a device for feeding and placing steel bars for secondary lining in tunnel engineering. Background Technology

[0002] In tunnel construction, the binding of secondary lining reinforcement is a core process for ensuring structural safety. Traditional secondary lining reinforcement placement relies heavily on manual handling and positioning: workers must carry the reinforcement bars on their shoulders and by hand from a scaffolding platform atop a mobile trolley, manually transferring, lifting, and binding them at challenging locations such as the tunnel arch and sidewalls. This method has significant drawbacks: individual secondary lining reinforcement bars are heavy (usually over 50kg) and long (6-12m), requiring multiple workers to coordinate the transport. The physical exertion of workers traveling between the ground and the elevated platform is enormous, and the placement speed is limited by the efficiency of manual handling, severely hindering construction progress. Traditional large-scale hoisting equipment (such as tower cranes and truck cranes) cannot enter due to cross-sectional size limitations, while simple winch hoisting suffers from problems such as excessive swaying, crude positioning, and inability to adapt to the tunnel's curvature. Utility Model Content

[0003] The purpose of this utility model is to provide a device for feeding and placing steel bars for secondary lining in tunnel engineering, which addresses the shortcomings of existing technologies and solves the problems mentioned in the background.

[0004] The technical solution of this utility model is implemented as follows:

[0005] This utility model provides a device for feeding and placing steel reinforcement in the secondary lining of a tunnel, including a trolley structure, a boom structure installed on the top of the trolley, a traction rope installed on the telescopic end of the boom structure, a lifting structure installed at the end of the traction rope, a conveying structure for conveying steel reinforcement on the top of the trolley structure, a lifting structure for controlling the horizontal height of the boom on the trolley structure, and an adjusting structure installed between the lifting structure and the boom structure, the adjusting structure being used to drive the boom structure to rotate.

[0006] In some technical solutions of this utility model, the boom structure includes a base, an mounting seat is installed on the side wall of the base, a boom is rotatably mounted on the side wall of the mounting seat, and a second push rod structure is provided on the base and hinged to the boom.

[0007] In some technical solutions of this utility model, the lifting structure includes an arc-shaped lifting frame, a limit plate is installed on one side of the lifting frame, a locking plate is slidably provided on the lifting frame, and a first push rod structure connected to the locking plate is provided on the lifting frame.

[0008] In some technical solutions of this utility model, the conveying structure includes a conveyor belt installed on a trolley structure, two transmission gears meshing with the conveyor belt are provided inside the trolley structure, and a number of transmission plates are arranged around the outer side wall of the conveyor belt, with slots opened on the side wall of the transmission plates.

[0009] In some technical solutions of this utility model, the adjustment structure includes a rotating frame, the top of the trolley structure is provided with an assembly port adapted to the rotating frame, an external gear ring is installed on the outer side wall of the rotating frame, a gear meshing with the external gear ring is installed in the assembly port, and a drive motor connected to the gear transmission is installed in the assembly port.

[0010] In some technical solutions of this utility model, the lifting structure includes a third push rod structure installed in the rotating frame, the suspension seat is slidably disposed in the rotating frame, and the telescopic end of the third push rod structure is connected to the suspension seat.

[0011] In some technical solutions of this utility model, guide columns are installed on the side wall of the rotating frame along its extension direction, and guide grooves adapted to the guide columns are opened on the outer side wall of the hanging seat.

[0012] In some technical solutions of this utility model, wear-resistant pads are installed on the outer side wall of the support frame.

[0013] Compared with existing technologies, this utility model has at least the following advantages or beneficial effects: The conveying structure is responsible for continuously transporting the prepared steel bars from the rear of the storage point trolley to the material picking station at the front of the trolley, forming an assembly line operation. The trolley structure is equipped with a lifting structure for controlling the horizontal height of the boom. The lifting structure controls the height of the boom installation point. An adjusting structure is installed between the lifting structure and the boom structure, controlling the overall rotation of the boom and driving the boom structure to rotate. By automatically conveying materials through the conveying structure, mechanical suspension and handling replace traditional manual handling and lifting, significantly reducing the intensity and time of manual labor, achieving semi-automation of the rebar placement operation. The conveying structure enables automated forward supply of steel bars, seamlessly connecting with the boom's lifting operation, reducing waiting time, maintaining the continuity of the work process, and enabling the device to adapt to the rebar placement requirements of different tunnel cross-sectional shapes, arches, and sidewalls. Attached Figure Description

[0014] Figure 1 This is a front view structural diagram of the present invention.

[0015] Figure 2 This is a schematic diagram of the installation structure of the boom in this utility model.

[0016] Figure 3 This is a front view schematic diagram of the support frame in this utility model.

[0017] Figure 4This is a cross-sectional view of the support frame in this utility model.

[0018] Reference numerals: 1. Trolley structure; 2. Conveyor belt; 3. Transmission gear; 4. Conveyor plate; 5. Slot; 6. Boom; 7. Traction rope; 8. Lifting frame; 9. Mounting base; 10. Drive motor; 11. Gear; 12. Third push rod structure; 13. Rotating frame; 14. External gear ring; 15. Guide column; 16. Lifting seat; 18. Second push rod structure; 19. Reinforcing bar; 20. Locking plate; 21. Limiting plate; 22. First push rod structure. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without inventive effort are within the scope of protection of this invention.

[0021] Example

[0022] This utility model provides a device for feeding and placing steel reinforcement in the secondary lining of tunnel engineering, such as... Figure 1 , Figure 2As shown, the system includes a trolley structure 1, which is manufactured based on the secondary lining trolley. A boom 6 structure is mounted on the top of the trolley, serving as the core actuator for hoisting the reinforcing bars 19. A traction rope 7 is installed on the telescopic end of the boom 6 structure, and a lifting structure is installed at the end of the traction rope. The traction rope 7 connects the end of the boom 6 structure and the lifting structure, enabling the suspension, lifting, and lowering of the reinforcing bars 19. This method is suitable for the uneven working surfaces within the tunnel and facilitates overcoming obstacles on the trolley itself. A conveying structure for transporting the reinforcing bars 19 is located on the top of the trolley structure 1. This conveying structure continuously transports the prepared reinforcing bars 19 from the rear of the storage point trolley to the material handling station at the front of the trolley, forming an assembly line operation. A lifting structure is installed on the trolley structure 1 to control the horizontal height of the boom 6. The lifting structure controls the height of the boom 6 installation point. An adjusting structure is installed between the lifting structure and the boom 6 structure. The adjusting structure controls the overall rotation of the boom 6 and drives the boom 6 structure to rotate. The material is automatically transported by the conveying structure, and mechanical suspension and handling replace the traditional large-scale manual handling and lifting, which greatly reduces the intensity and time of manual work and realizes the semi-automation of the reinforcement laying operation. The conveying structure realizes the automatic forward supply of the steel bars 19 and seamlessly connects with the lifting operation of the boom 6, reducing waiting time and maintaining the continuity of the operation process. This allows the device to adapt to the reinforcement laying requirements of different tunnel cross-section shapes, arches and side walls.

[0023] In some technical solutions of this utility model, the boom 6 structure includes a base 16, a mounting seat 9 is installed on the side wall of the base 16, and the boom 6 is rotatably mounted on the side wall of the mounting seat 9. The boom 6 is a self-extending structure. A second push rod structure 18 is provided on the base 16 and hinged to the boom 6. The traction rope 7 is installed on the free end of the boom 6. The second push rod structure 18 (usually a hydraulic cylinder or electric cylinder) serves as the power source, driving the boom 6 to perform a fan-shaped swing motion on the mounting seat 9, changing the height and horizontal projection distance of the working end of the boom 6 (i.e., the connection point of the traction rope 7) relative to the base 16, thus expanding the reachable area of ​​the free end of the boom 6. The second push rod structure 18 controls the pitch of the boom 6 in conjunction with its extension and retraction, allowing for more flexible obstacle avoidance and precise positioning of the lifting position.

[0024] In some technical solutions of this utility model, the lifting structure includes an arc-shaped lifting frame 8, which is connected to a traction rope 7. An electric hoist structure for rewinding the traction rope 7 is provided on the mounting base 9. A limit plate 21 is installed on one side of the lifting frame 8, and a locking plate 20 is slidably provided on the lifting frame 8. A first push rod structure 22 connected to the locking plate 20 is provided on the lifting frame 8. The lifting frame 8 in the lifting structure is designed as an arc-shaped structure to match the shape of the reinforcing bar 19. In conjunction with the locking plate 20, it clamps or stops the reinforcing bar 19, realizing quick and stable gripping and temporary fixation of the reinforcing bar 19. The locking plate 20 is a C-shaped structure. Under the push of the first push rod structure 22, the locking plate 20 and the limit plate 21 together form an openable clamping structure on the lifting frame 8, which clamps the reinforcing bar 19 between the arc-shaped surface of the lifting frame 8, the locking plate 20, and the limit plate 21, effectively preventing the reinforcing bar 19 from accidentally slipping during operation and improving safety. After the reinforcing bar 19 is placed in place, the telescopic end of the first push rod structure 22 retracts its body, and the locking plate 20 slides open and unlocks under its influence.

[0025] In some technical solutions of this utility model, the conveying structure includes a conveyor belt 2 installed on a trolley structure 1. The trolley structure 1 has two transmission gears 3 that mesh with the conveyor belt 2. Several transmission plates 4 are arranged around the outer wall of the conveyor belt 2, and slots 5 are formed on the side walls of the transmission plates 4. A motor is installed on the trolley structure 1, and the motor transmits rotational power to the conveyor belt 2, which is composed of a chain or belt, through the transmission gears 3. The transmission plates 4 installed on the conveyor belt 2 are bearing units, and the slots 5 on the transmission plates 4 position and restrict the rolling of the reinforcing bars 19. Subsequently, the conveyor belt 2 transports the reinforcing bars 19 in a predetermined direction, delivering the reinforcing bars 19 in batches to the lifting position of the boom 6, reducing manual handling intervention and improving the conveying efficiency of the reinforcing bars 19.

[0026] In some technical solutions of this utility model, the positioning structure includes a rotating frame 13. The top of the trolley structure 1 has an assembly port adapted to the rotating frame. An external gear ring 14 is installed on the outer wall of the rotating frame 13. A gear 11 meshing with the external gear ring 14 is installed inside the assembly port, and a drive motor 10, which is connected to the gear 11, is installed inside the assembly port. The rotating frame 13, as the core component of the rotating platform, has its bottom connected to the external gear ring 14 as a large gear. The drive motor 10 drives the small gear meshing with it to rotate, thereby driving the gear ring and the rotating frame 13 to rotate, providing the boom 6 system with rotational freedom around the vertical axis. This allows the boom 6 to place the reinforcing bars 19 at any position in the circumferential direction of the tunnel.

[0027] In some technical solutions of this utility model, the lifting structure includes a third push rod structure 12 installed in the rotating frame 13, and a hanging seat 16 slidably disposed in the rotating frame 13. The telescopic end of the third push rod structure 12 is connected to the hanging seat 16. The third push rod structure 12, such as a hydraulic cylinder / pneumatic cylinder / electric push rod, serves as a power source to directly drive the hanging seat 16 to perform vertical lifting and lowering movements relative to the rotating frame 13, thereby preventing the boom 6 and its auxiliary structures from obstructing the steel bar 19 from entering the transmission plate 4.

[0028] In some technical solutions of this utility model, guide posts 15 are installed on the side wall of the rotating frame 13 along its extension direction, and guide grooves adapted to the guide posts 15 are opened on the outer side wall of the hanging seat 16. When the hanging seat 16 is raised and lowered within the rotating frame 13, the guide posts 15 on the side wall of the frame are embedded in the guide grooves on the side wall of the hanging seat 16. The guide posts 15 and the guide grooves are tightly fitted, constraining the movement direction of the hanging seat 16, so that it can only slide along the direction perpendicular to the guide posts 15 (i.e., the vertical direction), preventing swaying, deviation or jamming, and resisting the lateral force or bending moment generated by the cantilever operation of the boom 6, thereby improving the overall rigidity.

[0029] In some technical solutions of this utility model, a wear-resistant pad is installed on the outer wall of the lifting frame 8. During the insertion and locking of the reinforcing bar 19 onto the lifting structure and during transportation, the outer surface of the reinforcing bar 19 directly contacts the bearing surface of the lifting frame 8 and generates relative sliding friction. The wear-resistant pad, fixed to the outer wall of the lifting frame 8, is located between the reinforcing bar 19 and the metal lifting frame 8, and bears the main frictional wear. The wear-resistant pad is made of materials such as nylon, polyurethane, and ultra-high molecular weight polyethylene. This wear-resistant pad acts as a sacrificial layer, replacing the metal frame to bear wear and extending the service life of the lifting frame 8.

[0030] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for feeding and placing reinforcing bars for secondary lining in tunnel engineering, characterized in that, The trolley structure (1) includes a trolley structure (1) with a boom (6) structure installed on its top. A traction rope (7) is installed on the telescopic end of the boom (6) structure. A lifting structure is installed at the end of the traction rope (7). A conveying structure for conveying steel bars (19) is provided on the top of the trolley structure (1). A lifting structure for controlling the horizontal height of the boom (6) is provided on the trolley structure (1). An adjustment structure is installed between the lifting structure and the boom (6) structure. The adjustment structure is used to drive the boom (6) structure to rotate.

2. The device for feeding and placing reinforcing bars for secondary lining in tunnel engineering according to claim 1, characterized in that, The boom (6) structure includes a base (16), a mounting seat (9) is installed on the side wall of the base (16), the boom (6) is rotatably mounted on the side wall of the mounting seat (9), the base (16) is provided with a second push rod structure (18) hinged to the boom (6), and the traction rope (7) is installed on the free end of the boom (6).

3. The device for feeding and placing secondary lining steel bars in tunnel engineering according to claim 2, characterized in that, The lifting structure includes an arc-shaped lifting frame (8), which is connected to the traction rope (7). A limit plate (21) is installed on one side of the lifting frame (8), and a locking plate (20) is slidably provided on the lifting frame (8). A first push rod structure (22) connected to the locking plate (20) is provided on the lifting frame (8).

4. A device for feeding and placing secondary lining steel bars in tunnel engineering according to any one of claims 1-3, characterized in that, The conveying structure includes a conveyor belt (2) installed on the trolley structure (1), and two transmission gears (3) meshing with the conveyor belt (2) are provided in the trolley structure (1). Several transmission plates (4) are arranged around the outer side wall of the conveyor belt (2), and slots (5) are opened on the side wall of the transmission plate (4).

5. A device for feeding and placing reinforcing bars for secondary lining in tunnel engineering according to claim 2, characterized in that, The adjustment structure includes a rotating frame (13), and the top of the trolley structure (1) is provided with an assembly port adapted to the rotating frame (13). An external gear ring (14) is installed on the outer side wall of the rotating frame (13), and a gear (11) meshing with the external gear ring (14) is installed in the assembly port. A drive motor (10) that is connected to the gear (11) is installed in the assembly port.

6. A device for feeding and placing secondary lining steel bars in tunnel engineering according to claim 5, characterized in that, The lifting structure includes a third push rod structure (12) installed in the rotating frame (13), the hanging seat (16) is slidably disposed in the rotating frame (13), and the telescopic end of the third push rod structure (12) is connected to the hanging seat (16).

7. A device for feeding and placing secondary lining steel bars in tunnel engineering according to claim 6, characterized in that, The rotating frame (13) has a guide column (15) installed on its side wall along its extension direction, and the outer side wall of the hanging seat (16) has a guide groove adapted to the guide column (15).

8. A device for feeding and placing secondary lining steel bars in tunnel engineering according to claim 3, characterized in that, Wear-resistant pads are installed on the outer side wall of the support frame (8).

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