Auxiliary device for installing tunnel primary support arch steel frame

Abstract

The utility model relates to an auxiliary device for installing a tunnel primary support arch steel frame, which belongs to the technical field of engineering construction and comprises a support rod fixing base, a support rod, a lifting rod, a steel frame fixing pedestal and a pulley block. The top of the lifting rod is fixedly connected with a steel frame fixing pedestal. The lifting rod is connected with a supporting rod in an up-down sliding mode. The pulley block comprises a movable pulley block and a fixed pulley block; the bottom of the lifting rod is connected with the movable pulley block; the bottom of the supporting rod is connected with a supporting rod fixing base. The steel frame lifting device is simple in structure, easy to machine, light in overall weight, capable of being rapidly and conveniently assembled and disassembled, convenient for constructors to move and place, and capable of achieving the purposes of saving manpower and reducing labor intensity in the whole steel frame lifting process.

Description

Technical Field

[0001] This utility model relates to the field of engineering construction technology, specifically an auxiliary device for installing the steel frame of the initial support arch of a tunnel. Background Technology

[0002] With the rapid development of tunnel construction technology and transportation demands, the ratio of bridges to tunnels in newly built land transportation routes has increased dramatically, and tunnel construction is increasingly venturing into complex geological conditions. Therefore, the application of steel frames for initial tunnel support is growing. Although the use of steel frames improves the rigidity of initial support and the safety of tunnel construction, the large weight of the steel frames themselves and the difficulty of mechanized construction at the tunnel face make the installation of steel frames time-consuming and labor-intensive.

[0003] Chinese patent CN 215057456 U proposes a simple temporary support rod that allows for adjustable length of the temporary support frame. However, the steel frame still requires manual lifting and is not effective during the most strenuous process of positioning the steel frame.

[0004] Chinese patent CN 220165717 U discloses an auxiliary lifting device for tunnel steel frames. It enhances lifting functionality through folding rods and a hand-operated hoist, enabling the steel frame to be lifted within a certain height. However, since the lifting function is achieved through the extension and retraction of support rods, manual labor is required to lift the steel frame onto a steel frame pallet at a certain height, thus not reducing the labor demand. Utility Model Content

[0005] The purpose of this utility model is to provide an auxiliary device for installing the steel frame of the tunnel initial support arch that is simple in structure, easy to disassemble, and easy to move. It can adapt to the harsh construction environment of tunnels, save time and labor throughout the tunnel erection process, and improve construction efficiency and safety.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] In the aforementioned auxiliary device for installing the steel frame of the initial support arch of the tunnel, the support rod fixing base includes four base limbs, a base fixing sleeve, and a base reinforcing diagonal brace; the four base limbs and the base fixing sleeve are vertically connected by welding, and the base reinforcing diagonal brace is welded between the four base limbs and the base fixing sleeve; the support rod is nested and connected to the base fixing sleeve.

[0008] In the aforementioned auxiliary device for installing the steel frame of the tunnel initial support arch, the lifting rod includes a lifting rod main rod and a lifting rod sleeve. The top of the lifting rod main rod is fixedly connected to a steel frame fixing platform, and the bottom side of the lifting rod main rod is fixedly connected to the lifting rod sleeve. The support rod includes a support rod main rod and a directional guide rail. The directional guide rail is fixedly connected to the surface of the support rod main rod, and the support rod main rod is movably nested inside the lifting rod sleeve. A directional guide groove is also provided inside the lifting rod sleeve, and the directional guide groove is slidably connected to the directional guide rail.

[0009] In the aforementioned auxiliary device for installing the steel frame of the tunnel initial support arch, the top of the main support rod is fixedly connected to the support rod cantilever, and the outer surface of the lifting rod sleeve is fixedly connected to the lifting rod iron ring; the support rod cantilever is connected to the fixed pulley block, and the lifting rod iron ring is connected to the movable pulley block.

[0010] In the aforementioned auxiliary device for installing the steel frame of the tunnel initial support arch, the steel frame fixing platform includes a fixed clamping component, a movable clamping component, and a strong spring. The movable clamping component is movably connected to the fixed clamping component, and a strong spring is also connected between the fixed clamping component and the movable clamping component.

[0011] The beneficial effects of this utility model are:

[0012] (1) An auxiliary device for installing the steel frame of the initial support arch of a tunnel, which is easy to process, disassemble, and assemble. The device can be processed on-site in the tunnel, and the processing dimensions of each structure can be flexibly determined according to the characteristics of tunnel construction. At the same time, the device has low processing cost, convenient material acquisition, simple structure, and high adaptability to the complex construction environment of tunnels, and has advantages for application and promotion.

[0013] (2) The device is lightweight, labor-saving, and highly safe. It saves labor by using a pulley system, which helps on-site construction personnel to install the arch steel frame efficiently. At the same time, when the steel frame is lifted by the lifting rod, there is a directional guide rail to ensure that the lifting rod moves vertically up and down. The steel frame is fixed by a fixed platform, which ensures the safety of the steel frame installation process.

[0014] (3) This device overcomes the shortcomings of other similar devices that cannot save manpower throughout the entire steel frame lifting process, thus saving manpower throughout the entire steel frame lifting process and truly achieving the goal of saving manpower and reducing the labor intensity of construction workers. At the same time, this device has room for further development, and can be mechanized by installing electric hoists to replace manpower. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the support rod fixing base structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the support rod structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the lifting rod structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the steel frame fixing base structure of this utility model;

[0020] Figure 6 This is a schematic diagram of the fixing and clamping components of the steel frame fixing platform of this utility model;

[0021] Figure 7 This is a schematic diagram of the movable clamping component of the steel frame fixing base of this utility model;

[0022] Figure 8 This is a schematic diagram of the pulley block structure of this utility model;

[0023] Figure 9 This is a schematic diagram illustrating the application of the steel frame in this utility model.

[0024] In the diagram: 1—Support rod fixing base; 11—Base limbs; 12—Base fixing sleeve; 13—Base reinforcement diagonal brace; 2—Support rod; 21—Support rod main rod; 22—Support rod cantilever; 23—Directional guide rail; 3—Lifting rod; 31—Lifting rod main rod; 32—Lifting rod sleeve; 33—Directional guide groove; 34—Lifting rod lifting ring; 4—Steel frame fixing platform; 41—Fixed clamping component; 42—Modible clamping component; 43—Strong spring; 5—Pulley block; 51—Modible pulley block; 52—Fixed pulley block; 6—Steel frame. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this utility model.

[0026] See Figures 1-9 .like Figure 1 As shown in the figure, this utility model embodiment provides an auxiliary device for installing a tunnel arch steel frame, which assists construction personnel in safely and labor-savingly installing the tunnel arch steel frame. The device consists of a support rod fixing base 1, a support rod 2, a lifting rod 3, a steel frame fixing platform 4, and a pulley block 5. The top of the lifting rod 3 is fixedly connected to the steel frame fixing platform 4, and the lifting rod 3 is slidably connected to the support rod 2. The pulley block 5 includes a movable pulley block 51 and a fixed pulley block 52. The top of the support rod 2 is connected to the fixed pulley block 52, and the bottom of the lifting rod 3 is connected to the movable pulley block 51. The bottom of the support rod 2 is connected to the support rod fixing base 1.

[0027] like Figure 2 As shown, the support rod fixing base 1 consists of base limbs 11 made of angle steel or square steel, a base fixing sleeve 12 made of seamless steel pipe, and diagonal bracing 13 welded between the limbs and the sleeve. It is used to fix the support rod and prevent the device from tipping over during use. The base limbs 11 and the base fixing sleeve 12 are connected by welding, and a base reinforcement diagonal bracing 13 is welded between them for reinforcement.

[0028] like Figure 3 As shown, the support rod 2 consists of a support rod main rod 21 made of seamless steel pipe, a support rod cantilever 22 welded to the top of the main rod, and a directional guide rail 23 on the upper surface of the main rod. The outer diameter of the support rod main rod 21 is the same as or slightly smaller than the inner diameter of the base fixing sleeve 12. The support rod cantilever 22 is welded to the top of the support rod main rod 21, and the directional guide rail 23 is provided on the surface of the support rod main rod 21. The directional guide rail 23 is only provided within a certain range on the surface of the support rod 2. Before the lifting rod 3 is lifted, the directional guide rail 23 is not provided at the connection between the lifting rod sleeve 32 and the support rod main rod 31, so that the lifting rod main rod 31 can rotate around the support rod main rod 21.

[0029] refer to Figures 4 to 6 The lifting rod 3 includes a main lifting rod 31, lifting rod sleeves 32, directional guide grooves 33, and lifting rod rings 34. The main lifting rod 31 is made of seamless steel pipe of the same type as the main support rod 21 and is welded to two lifting rod sleeves 32 at the lower part of the main lifting rod 31. The lifting ring 34 is welded to the side wall of the lowermost lifting rod sleeve 32. The upper part of the main lifting rod 31 is welded to the steel frame fixing base 4 for supporting the steel frame. The lifting rod sleeves 32 are fitted onto the main support rod 21 and have directional guide grooves 33 inside.

[0030] like Figure 7 As shown, the steel frame fixing platform 4 consists of three parts: a fixed clamping component 41, a movable clamping component 42, and a strong spring 43. The movable clamping component 42 can move within the circular tube of the fixed clamping component 41, but is subject to the elastic force of the strong spring 43. The fixed clamping component 41 is welded to the top of the lifting rod main rod 31. The function of the steel frame fixing platform is to fix the steel frame during the lifting process and prevent the steel frame from falling. The clamping width can be adjusted by sliding between the fixed clamping component 41 and the movable clamping component 42, and the clamping force is provided by the strong spring 43.

[0031] like Figure 8 As shown, pulley block 5 consists of a fixed pulley block 52 with hanging hooks at both the top and bottom, and a movable pulley block 51 with a hanging hook only at the bottom. The labor intensity can be adjusted by changing the number of pulley blocks. The fixed pulley block 52 is hooked to the support rod cantilever 22 via the upper hook, while the movable pulley block 51 lifts the steel frame and raises the lifting rod 3 via the lower hook. The fixed pulley block 52 can be suspended from the support rod cantilever 22 via the upper hook, allowing for assembly and disassembly.

[0032] The working principle of this utility model is as follows: When installing the arch steel frame, the components are assembled on-site. First, the support rod fixing base 1 is placed. Next, the bottom of the support rod main rod 21 is passed through the lifting rod sleeve 32 and then inserted into the support rod base fixing sleeve 12. Finally, the pulley block 5 is suspended on the support rod cantilever 22, thus completing the assembly. At this time, there is no directional guide rail 23 between the lifting rod sleeve 32 and the support rod main rod 21, so the lifting rod 3 can rotate freely around the support rod main rod 21 through its sleeve 32. When lifting the steel frame, the steel frame is placed on the ground or on the working platform of the erecting trolley, and a wire rope is tied to the center of the steel frame. The hook of the movable pulley block 51 is hooked onto the wire rope, and the lifting rope of the pulley block 5 is pulled manually to lift the steel frame above the height of the steel frame fixing base 4. Then, the lifting rod main rod 31 is rotated to one side of the pulley block 5 using the lifting rod sleeve 32. Figure 9 As shown, after the steel frame is clamped and fixed by the steel frame fixing platform 4, the steel wire rope attached to the steel frame is untied, and the hook of the movable pulley block 51 is hooked onto the lifting rod iron ring 34. The lifting rod 3 is then used to further lift the steel frame to the installation position along the direction guide rail 23. After the arch steel frame installation is completed, this utility model is disassembled to avoid affecting subsequent face operations.

[0033] This utility model features a simple and easy-to-manufacture structure, a lightweight overall design, and quick and convenient assembly and disassembly, facilitating movement and placement by construction personnel. Utilizing a movable pulley system and a "lift-then-raise" design, it achieves labor savings and reduces labor intensity throughout the entire steel frame lifting process. Simultaneously, the design of a fixed steel frame platform ensures safety during the lifting process. This utility model overcomes the drawbacks of manual scaffolding erection, such as high labor intensity, large labor requirements, and low construction efficiency. It also overcomes the shortcomings of previous similar devices that could not achieve labor-saving throughout the steel frame lifting process, truly achieving the goal of saving manpower and reducing the labor intensity of construction workers.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, these are merely preferred embodiments of the present invention. However, the scope of protection of the present invention is not limited thereto. For those skilled in the art, modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An auxiliary device for installing the steel frame of the initial support arch of a tunnel, characterized in that, It includes a support rod fixing base (1), a support rod (2), a lifting rod (3), a steel frame fixing platform (4), and a pulley block (5); the top of the lifting rod (3) is fixedly connected to the steel frame fixing platform (4), and the lifting rod (3) is slidably connected to the support rod (2) up and down; the pulley block (5) includes a movable pulley block (51) and a fixed pulley block (52); the top of the support rod (2) is connected to the fixed pulley block (52), and the bottom of the lifting rod (3) is connected to the movable pulley block (51); the bottom of the support rod (2) is connected to the support rod fixing base (1).

2. The auxiliary device for installing the steel frame of the tunnel initial support arch according to claim 1, characterized in that, The support rod fixing base (1) includes base limbs (11), base fixing sleeve (12) and base reinforcing diagonal brace (13); the base limbs (11) and the base fixing sleeve (12) are vertically connected by welding, and the base reinforcing diagonal brace (13) is welded between the base limbs (11) and the base fixing sleeve (12); the base fixing sleeve (12) is nested and connected to the support rod (2).

3. The auxiliary device for installing the steel frame of the tunnel initial support arch according to claim 1, characterized in that, The lifting rod (3) includes a lifting rod main rod (31) and a lifting rod sleeve (32). The top of the lifting rod main rod (31) is fixedly connected to a steel frame fixing base (4), and the bottom side of the lifting rod main rod (31) is fixedly connected to the lifting rod sleeve (32). The support rod (2) includes a support rod main rod (21) and a directional guide rail (23). The directional guide rail (23) is fixedly connected to the surface of the support rod main rod (21), and the support rod main rod (21) is movably nested in the lifting rod sleeve (32). A directional guide groove (33) is also provided in the lifting rod sleeve (32), and the directional guide groove (33) is slidably connected to the directional guide rail (23).

4. The auxiliary device for installing the steel frame of the tunnel initial support arch according to claim 1, characterized in that, The support rod main rod (21) is fixedly connected to the support rod cantilever (22) at the top end, and the lifting rod sleeve (32) is fixedly connected to the lifting rod iron ring (34) on the outer surface; the support rod cantilever (22) is connected to the fixed pulley group (52), and the lifting rod iron ring (34) is connected to the movable pulley group (51).

5. The auxiliary device for installing the steel frame of the tunnel initial support arch according to claim 1, characterized in that, The steel frame fixed platform (4) includes a fixed clamping component (41), a movable clamping component (42) and a strong spring (43). The movable clamping component (42) is movably connected to the fixed clamping component (41). A strong spring (43) is also connected between the fixed clamping component (41) and the movable clamping component (42).

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