Multifunctional excavation gantry

Abstract

The utility model discloses a kind of multifunctional excavation gantries, excavation gantry includes portal frame body, the front end and rear end of the top of portal frame body are equipped with arch frame installation platform and arch frame assembly platform, the rear end of arch frame assembly platform is equipped with arch frame hoist device;Arch frame assembly platform's left and right sides each are equipped with a group of first lifting device, the top of each group of first lifting device is connected with a first moving track, first moving track is equipped with several first fixing device for fixing arch frame;Arch frame installation platform's left and right sides each are equipped with a group of second lifting device, the top of each group of second lifting device is connected with a second moving track, second moving track is equipped with several second fixing device for fixing arch frame;Second moving track is located in the inside of first moving track, second moving track and first moving track partially overlap in front-back direction.The utility model has the advantages that: hoisting, assembly and installation of arch frame are realized simultaneously.

Description

Technical Field

[0001] This utility model relates to the technical field of tunnel construction equipment, and in particular to a multi-functional excavation platform. Background Technology

[0002] In the field of tunnel engineering, especially in projects such as mine roadways and traffic tunnels constructed using the New Austrian Tunneling Method (NATM) or similar methods, steel arch frames serve as a primary initial support structure. Their efficient and precise installation is crucial for ensuring construction safety, controlling surrounding rock deformation, and accelerating project progress. The construction process for steel arch frames typically includes key steps such as hoisting and transporting arch frame units to the working face, precisely assembling and connecting them at the working face, and finally installing, positioning, and fixing the assembled arch frame along the tunnel's design outline.

[0003] Currently, the trolley equipment commonly used in tunnel construction can be mainly divided into two categories: 1. Specialized hoisting equipment: such as gantry cranes or simple boom trolleys, mainly used for horizontal and vertical hoisting and transportation of arch frame units from the storage area to the tunnel working face. These types of equipment usually have a certain lifting capacity and mobility, but their functions are limited, and they lack the specialized tooling, operating platform, and fine-tuning positioning mechanism required for arch frame assembly and precise positioning installation.

[0004] 2. Support Work Trolleys: These trolleys are mainly used for subsequent support operations such as drilling, anchor bolt installation, and shotcreting, or to provide a working platform for manual arch frame assembly. Although some trolleys may be equipped with simple lifting points or auxiliary supports, their core design is not centered around the entire construction process of the arch frame; their structure often cannot meet the requirements for efficient and safe hoisting of arch frame units, and they lack the systematic function to achieve high-precision and rapid assembly between arch frame segments (such as bolt hole alignment, flange face fitting, and temporary fixing) and multi-degree-of-freedom precise installation and positioning of the entire arch frame in the tunnel space (including radial, circumferential, and pitch angle adjustments).

[0005] The main problems and shortcomings of existing technologies are: 1. Functional fragmentation and frequent process transitions: The three core processes of arch frame hoisting, assembly, and installation typically require different equipment or manual assistance to complete in stages. For example, hoisting equipment is first used to unload the arch frame unit to the vicinity of the work surface (or even the ground), then manual labor or simple machinery is used for ground or low-altitude assembly, and finally, a support trolley platform or manual scaffolding is erected for installation and positioning. These process transitions are not only inefficient but also increase the safety risks associated with equipment scheduling, site occupation, and overlapping work by personnel and equipment.

[0006] 2. Lack of integrated operation capability: Existing trolley equipment generally cannot continuously and smoothly complete the entire process of arch frame hoisting, precise splicing, and final installation and fixing on an integrated platform. Hoisting equipment lacks the conditions for assembly and fine-tuning installation; support trolleys are unable to efficiently complete hoisting and specialized assembly. Especially for large-span, large-tonnage arch frames, existing equipment is unable to safely and efficiently complete assembly operations at high altitudes such as the arch crown, and cannot provide stable and reliable support or strong multi-directional adjustment capabilities to achieve precise installation of the arch frame.

[0007] 3. Limited efficiency and precision: The segmentation of processes and the lack of equipment functions result in low overall efficiency of arch frame construction, excessive manual intervention, high labor intensity, and difficulty in ensuring the precision of arch frame assembly (such as the tightness of connecting bolts and the roundness of the arch frame) and the accuracy of final installation positioning (such as spacing, verticality, and conformity of outline) in the narrow and complex tunnel space, which directly affects the support quality and construction safety.

[0008] 4. Safety challenges: Manual handling, high-altitude assembly, and unstable temporary supports pose high safety risks, especially in complex geological conditions or when the arch frame is heavy. Summary of the Invention

[0009] The purpose of this utility model is to provide a multi-functional excavation platform to address the shortcomings of the prior art. The top of the portal frame of the excavation platform is equipped with an arch frame installation platform and an arch frame assembly platform, and the arch frame assembly platform is equipped with an arch frame lifting device, which simultaneously realizes the hoisting, assembly and installation of the arch frame.

[0010] The objective of this utility model is achieved through the following technical solution: A multi-functional excavation platform includes a gantry frame. An arch frame installation platform and an arch frame assembly platform are respectively located at the front and rear ends of the top of the gantry frame. The arch frame installation platform is higher than the arch frame assembly platform, and an arch frame lifting device is located at the rear end of the arch frame assembly platform. A set of first lifting devices is provided on each of the left and right sides of the arch frame assembly platform. Each set of first lifting devices includes several first lifting devices spaced apart along the front-rear direction of the arch frame assembly platform. A first moving track is connected to the top of each set of first lifting devices, and several first fixing devices for fixing the arch frame are installed on the first moving track. A set of second lifting devices is provided on each of the left and right sides of the arch frame installation platform. Each set of second lifting devices includes several second lifting devices spaced apart along the front-rear direction of the arch frame installation platform. A second moving track is connected to the top of each set of second lifting devices, and several second fixing devices for fixing the arch frame are installed on the second moving track. The second moving track is located inside the first moving track, and the second moving track partially overlaps with the first moving track in the front-rear direction.

[0011] The arch frame lifting device is provided on each of the left and right sides of the arch frame assembly platform. The arch frame lifting device includes a base plate, a rotating plate, a hydraulic telescopic rod, a fixed pulley, and a winch. The hydraulic telescopic rod is provided on each of the left and right sides of the base plate. The bottom of the rotating plate and the fixed end of the hydraulic telescopic rod are respectively hinged to the front and rear ends of the base plate. The telescopic end of the hydraulic telescopic rod is hinged to the top of the rotating plate. The fixed pulley is installed at the top of the rotating plate. The steel rope of the winch is wound around the fixed pulley and used to connect the arch frame.

[0012] Both the first fixing device and the second fixing device are connected to the first moving track and the second moving track respectively via sliders. Both the first fixing device and the second fixing device include two opposing limiting plates and a support rod connected to the two limiting plates.

[0013] The bottom of the gantry frame is equipped with wheels on both the left and right sides.

[0014] The advantage of this utility model is that it simultaneously realizes the hoisting, assembly, and installation of the arch frame. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the excavation platform of this utility model; Figure 2 for Figure 1 Enlarged view of A in the middle; Figure 3 This is a top view showing the installation of the first and second moving tracks of this utility model; Figure 4 This is a top view of the first fixing device of this utility model; Figure 5 This is a schematic diagram of the arch frame lifting device of this utility model; like Figures 1-5 As shown in the figure, the markings represent: The frame includes: 10 portal frame, 20 traveling wheels, 30 arch frame assembly platform, 301 first lifting device, 302 first moving track, 303 first fixing device, 3031 limit plate, 3032 support rod, 304 slider, 40 arch frame installation platform, 401 second lifting device, 402 first moving track, 403 second fixing device, 50 arch frame lifting device, 50 base plate, 502 rotating plate, 503 hydraulic telescopic rod, and 504 fixed pulley. Detailed Implementation

[0016] The features and other related features of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments, so as to facilitate the understanding of those skilled in the art: Example: Figures 1-5 As shown, this embodiment relates to a multi-functional excavation platform, which mainly includes a gantry frame 10. The bottom left and right sides of the gantry frame 10 are each equipped with traveling wheels 20 for movement in the front-to-back direction. The front and rear ends of the top of the gantry frame 10 are respectively equipped with an arch frame mounting platform 40 and an arch frame assembly platform 30, with the arch frame mounting platform 40 being higher than the arch frame assembly platform 30. An arch frame lifting device 50 is provided at the rear end of the arch frame assembly platform 30. One arch frame lifting device 50 is located on each of the left and right sides of the arch frame assembly platform 30. The arch frame lifting device 50 includes a base plate 501, a rotating plate 502, a hydraulic telescopic rod 503, a fixed pulley 504, and a winch. The top of the rotating plate 502 extends beyond the rear end of the arch frame assembly platform 30. One hydraulic telescopic rod 503 is located on each of the left and right sides of the base plate 501. The bottom of the rotating plate 502 and the fixed end of the hydraulic telescopic rod 503 are hinged to the front and rear ends of the base plate 501, respectively. The telescopic ends of the hydraulic telescopic rod 503 extend and retract with the rotating plate 501. The top of the rotating plate 502 is hinged, and the fixed pulley 504 is installed at the top of the rotating plate 502. The steel rope of the winch is wound on the fixed pulley 504 and used to connect the arch frame. The steel ropes of the winches of the two arch frame lifting devices 50 are respectively connected to both ends of the same arch frame. When the winch is started, the steel rope pulls the arch frame upward to lift the arch frame above the arch frame assembly platform 30. The position of the top of the rotating plate 502 is adjusted by the extension and retraction of the hydraulic telescopic rod 503, thereby adjusting the position of the arch frame to facilitate the placement of the arch frame on the first fixed device 303 of the first moving track 302.

[0017] like Figures 1-5As shown, a set of first lifting devices 301 (hydraulic telescopic devices) is provided on each of the left and right sides of the arch frame assembly platform 30. Each set of first lifting devices 301 includes several first lifting devices 301 spaced apart along the front and rear direction of the arch frame assembly platform 30. The top (telescopic rod) of each set of first lifting devices 301 is connected to a first moving track 302. Several first fixing devices 303 for fixing the arch frame are installed on the first moving track 302. The first fixing devices 303 move on the first moving track 302 through a driving device. The first fixing device 303 is connected to the first moving track 302 via a slider 304. The first moving track 302 is made of I-beams. Correspondingly, the slider 304 has a T-shaped groove inside, which matches the top of the first moving track 302. The first fixing device 303 includes two opposing limiting plates 3031 and a support rod 3031 connected to the two limiting plates 3031. The space formed by the two limiting plates 3031 is used to hold the arch frame, and the support rod 3031 is used to support the support rod 3031. When an arch frame is above the first lifting device 301, the position of the first fixing device 303 on the first moving track 302 is adjusted, and the first lifting device 301 extends to hold the arch frame in the first fixing device 303. The connection between the steel cable and the arch frame is released, and the first fixing device 303 moves forward. When multiple single arch frames are installed on multiple first fixing devices 303, the multiple single arch frames can be assembled together to form multiple arch frames.

[0018] On each of the left and right sides of the arch frame mounting platform 40, there is a set of second lifting devices 401 (hydraulic telescopic devices). Each set of second lifting devices 401 includes several second lifting devices 401 spaced apart along the front-back direction of the arch frame mounting platform 40. The top (telescopic rod) of each set of second lifting devices 401 is connected to a second moving rail 402. Several second fixing devices 403 for fixing the arch frame are installed on the second moving rail 402. The second fixing devices 403 move on the second moving rail 402 through a drive device. The second fixing devices 403 are connected to the second moving rail 402 through a slider 304. The structure of the second fixing device 403 is the same as that of the first fixing device 303. The structure of the second moving rail 402 is the same as that of the first moving rail 302, so it will not be described in detail here. The second moving rail 402 is located inside the first moving rail 302, and the second moving rail 402 partially overlaps with the first moving rail 302 in the front-back direction. When multiple first fixing devices 303 move multiple arch frames to the overlapping position of the first moving track 302 and the second moving track 402, the position of the second fixing device 403 on the second moving track 402 is adjusted, and the second lifting device 401 extends so that the multiple arch frames are locked in the multiple second fixing devices 403. The multiple first fixing devices 303 disengage from the multiple arch frames, the multiple second fixing devices 403 move forward, and the first lifting device 301 continues to extend so that the multiple arch frames can be installed and fixed.

[0019] The beneficial technical effect of this embodiment is that it simultaneously realizes the hoisting, assembly, and installation of the arch frame.

[0020] Although the above embodiments have described the concept and embodiments of the present invention in detail with reference to the accompanying drawings, those skilled in the art will recognize that various improvements and modifications can still be made to the present invention without departing from the scope of the claims, and therefore will not be elaborated here.

Claims

1. A multi-functional excavation platform, characterized in that... The excavation platform includes a portal frame. An arch frame installation platform and an arch frame assembly platform are respectively located at the front and rear ends of the top of the portal frame. The arch frame installation platform is higher than the arch frame assembly platform. An arch frame lifting device is located at the rear end of the arch frame assembly platform. A set of first lifting devices is located on each of the left and right sides of the arch frame assembly platform. Each set of first lifting devices includes several first lifting devices spaced apart along the front-rear direction of the arch frame assembly platform. A first moving track is connected to the top of each set of first lifting devices, and several first fixing devices for fixing the arch frame are installed on the first moving track. A set of second lifting devices is located on each of the left and right sides of the arch frame installation platform. Each set of second lifting devices includes several second lifting devices spaced apart along the front-rear direction of the arch frame installation platform. A second moving track is connected to the top of each set of second lifting devices, and several second fixing devices for fixing the arch frame are installed on the second moving track. The second moving track is located inside the first moving track, and the second moving track partially overlaps with the first moving track in the front-rear direction.

2. The multi-functional excavation platform as described in claim 1, characterized in that... The arch frame lifting device is provided on each of the left and right sides of the arch frame assembly platform. The arch frame lifting device includes a base plate, a rotating plate, a hydraulic telescopic rod, a fixed pulley, and a winch. The hydraulic telescopic rod is provided on each of the left and right sides of the base plate. The bottom of the rotating plate and the fixed end of the hydraulic telescopic rod are respectively hinged to the front and rear ends of the base plate. The telescopic end of the hydraulic telescopic rod is hinged to the top of the rotating plate. The fixed pulley is installed at the top of the rotating plate. The steel rope of the winch is wound around the fixed pulley and used to connect the arch frame.

3. The multi-functional excavation platform as described in claim 1, characterized in that... Both the first fixing device and the second fixing device are connected to the first moving track and the second moving track respectively via sliders. Both the first fixing device and the second fixing device include two opposing limiting plates and a support rod connected to the two limiting plates.

4. A multi-functional excavation platform as described in claim 1, characterized in that... The bottom of the gantry frame is equipped with wheels on both the left and right sides.

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