Tunnel clamp type steel arch positioning auxiliary device

Abstract

The utility model discloses a tunnel fixture type steel arch positioning auxiliary device which is arranged on one side of a fixture type steel arch and comprises a base, a fluted disc, a rotating rod, a first swing rod, a V-shaped connecting rod, a second swing rod, a first positioning arm, a second positioning arm and a third positioning arm. Anchor rods extending into the ground are arranged on the two sides of the rear end of the base, and a first positioning arm and a second positioning arm are hinged to the two sides of the front end of the base respectively; the fluted disc is installed on the base, the eccentric side of the front end face of the fluted disc is connected with the handle, the eccentric side of the rear end face of the fluted disc is hinged to the rotating rod, and ratchets used for limiting are arranged outside the fluted disc. Angle adjustment of the first positioning arm and the second positioning arm is achieved through a linkage mechanism composed of the fluted disc, the rotating rod, the swing rod and the connecting rod, and clamp type steel arches with different radians and inner diameters can be flexibly matched with the third positioning arm which is vertically fixed.

Description

Technical Field

[0001] This utility model relates to the field of tunnel engineering, specifically a tunnel clamp-type steel arch frame positioning auxiliary device. Background Technology

[0002] In tunnel construction, steel arch frames serve as a crucial support structure, and the accuracy of their installation and positioning directly impacts the safety and stability of tunnel construction. Due to their structural characteristics and ease of installation, clamp-type steel arch frames are widely used in tunnel construction.

[0003] The following are currently disclosed technologies for positioning assistance of steel arch frames:

[0004] 1) Patent application CN221609996U discloses a positioning auxiliary device for steel arch frames in tunnel construction. This patent application includes a steel arch frame with a positioning unit for clamping and fixing it. A base is installed on the tunnel surface. A connecting unit for providing support to the steel arch frame is provided between the positioning unit and the base. The positioning unit includes clamping plates clamping both sides of the steel arch frame. A mounting seat is provided below the steel arch frame, and the mounting seat has an adjustment unit for adjusting the clamping force of the clamping plates. This utility model, by setting clamping plates, lead screws, slide rods, mounting seats, bidirectional screws, connecting seats, electric actuators, universal balls, bases, and cover plates, forms a support structure positioned directly below the steel arch frame, replacing the existing side support structure. This provides better support, allows normal use on uneven ground, and improves the stability and ease of use of the support.

[0005] 2) Announcement No. CN218716849U discloses a positioning auxiliary device for steel arch frames in deep-buried tunnels in soft soil areas. This patent application includes a steel arch frame body, a fixed base plate, a lifting plate, a first telescopic column, a first telescopic spring, a flipping support arm, and an elastic support assembly. Two flipping support arms are symmetrically hinged at both ends of the lifting plate, and a second U-shaped support plate is fixed to the free end of each flipping support arm. Two symmetrically distributed L-shaped support plates are also fixed to the bottom surface of the lifting plate. This utility model's positioning auxiliary device for steel arch frames in deep-buried tunnels, relying on the cooperation of an electric push rod, a first telescopic column, a first U-shaped support plate, a flipping support arm, and a second U-shaped support plate, can more stably support the steel arch frame body, providing positioning assistance. Simultaneously, it can prevent the second U-shaped support plate from slipping relative to the steel arch frame body, improving the stability and safety of the device.

[0006] However, in actual construction, due to the complex and varied geological conditions of tunnels, the cross-sectional shape and size of tunnels differ in different sections. This requires steel arch frames to have different curvatures and inner diameters to adapt to different construction needs. While the currently available steel arch frame positioning assistance technology provides some support for the positioning of steel arch frames, it still has significant shortcomings in adaptability to steel arch frames with different curvatures and inner diameters. Utility Model Content

[0007] The purpose of this utility model is to provide a positioning auxiliary device for a tunnel clamp-type steel arch frame. Through a linkage mechanism consisting of a gear plate, a rotating rod, a swing rod, and a connecting rod, the angles of the first and second positioning arms can be adjusted. With the help of a vertically fixed third positioning arm, it can flexibly match clamp-type steel arch frames with different curvatures and inner diameters.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a positioning auxiliary device for a tunnel clamp-type steel arch frame. The positioning auxiliary device is configured on one side of the clamp-type steel arch frame. The positioning auxiliary device includes a base, a gear plate, a rotating rod, a first swing rod, a V-shaped connecting rod, a second swing rod, a first positioning arm, a second positioning arm, and a third positioning arm. The base has an opening in the middle, and anchor rods extending into the ground are provided on both sides of the rear end of the base. The first positioning arm and the second positioning arm are respectively hinged to both sides of the front end of the base. The gear plate is mounted on the base. A handle is connected to the eccentric side of the front end face of the gear plate, and a rotating rod is hinged to the eccentric side of the rear end face of the gear plate. The gear plate is provided with ratchet teeth for limiting positioning.

[0009] Preferably, the first swing arm and the V-shaped connecting rod are coaxially hinged to the free end of the rotating rod, the middle of the V-shaped connecting rod is movably connected to the bottom side of the base, and the upper end of the V-shaped connecting rod extends into the opening of the base and is hinged to the second swing arm.

[0010] Preferably, the end of the first swing arm is hinged to the first positioning arm, and the end of the second swing arm is hinged to the second positioning arm.

[0011] Preferably, the third positioning arm is vertically fixed inside the opening of the base, and adjustment grooves are provided on the third, first, and second positioning arms. A multi-stage linkage robotic arm is formed through the coaxial hinge design of the first swing rod, V-shaped connecting rod, and rotating rod. The third positioning arm is vertically fixed inside the opening of the base, forming an isosceles triangular support structure with the first and second positioning arms. The adjustment grooves on the three sets of positioning arms work together to achieve three-point positioning and multi-point tensioning of the steel arch frame through self-locking sliding shafts and expansion blocks.

[0012] Preferably, a positioning module is provided on the front side of the first positioning arm, the second positioning arm and the third positioning arm, and the positioning module includes a self-locking slide shaft and a expansion block.

[0013] Preferably, the self-locking slide shaft is slidably connected to the adjusting grooves on the first positioning arm, the second positioning arm, and the third positioning arm. An expansion block is connected to the front end of the self-locking slide shaft, extending into the groove on the outside of the clamp-type steel arch frame and being tensioned and fixed. The self-locking slide shaft is slidably connected to the adjusting grooves on the first, second, and third positioning arms, forming a three-dimensional dynamic adjustment system.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model utilizes a linkage mechanism consisting of a gear plate, a rotating rod, a swing rod, and a connecting rod to achieve angle adjustment of the first and second positioning arms. Combined with a vertically fixed third positioning arm, it can flexibly accommodate clamp-type steel arch frames with different curvatures and inner diameters. Compared to traditional fixed or single-adjustment positioning devices, this utility model can cover a wider range of steel arch frame specifications, significantly reducing construction equipment costs and improving construction efficiency.

[0016] 2. The positioning module of this utility model adopts a combination of self-locking sliding shaft and expansion block. Stepless positioning is achieved through adjustment groove. The tensioning cooperation between the expansion block and the steel arch frame groove provides high friction fixation to ensure zero displacement after positioning.

[0017] 3. This utility model simplifies the positioning process of the steel arch frame to three steps: rotation, sliding, and locking. A single person can complete the positioning of the steel arch frame within 5 minutes, significantly improving the construction pace. It is especially suitable for tunnel projects with complex geological conditions and frequent adjustments to the support scheme. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the positioning module in an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram illustrating the application of this utility model.

[0021] In the diagram: 1. Base; 2. Gear plate; 3. Rotating rod; 4. First swing rod; 5. V-shaped connecting rod; 6. Second swing rod; 7. First positioning arm; 8. Second positioning arm; 9. Third positioning arm; 10. Anchor rod; 11. Self-locking sliding shaft; 12. Expansion block. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] Please see Figure 1 , Figure 3 This utility model provides a technical solution: a positioning auxiliary device for a tunnel clamp-type steel arch frame. The positioning auxiliary device is configured on one side of the clamp-type steel arch frame. The positioning auxiliary device includes a base 1, a toothed disc 2, a rotating rod 3, a first swing rod 4, a V-shaped connecting rod 5, a second swing rod 6, a first positioning arm 7, a second positioning arm 8, and a third positioning arm 9.

[0026] In this embodiment, the base 1 has an opening in the middle, and anchor rods 10 extending into the ground are provided on both sides of the rear end of the base 1. The first positioning arm 7 and the second positioning arm 8 are respectively hinged to the two sides of the front end of the base 1. The gear plate 2 is mounted on the base 1. The eccentric side of the front end face of the gear plate 2 is connected to a handle, and the eccentric side of the rear end face of the gear plate 2 is hinged to a rotating rod 3. The gear plate 2 is provided with ratchet teeth for limiting positioning (not shown in the figure). The first swing rod 4 and the V-shaped connecting rod 5 are both coaxially hinged to the free end of the rotating rod 3. The middle of the V-shaped connecting rod 5 is movably connected to the bottom side of the base 1, and the upper end of the V-shaped connecting rod 5 extends into the opening of the base 1 and is hinged to the second swing rod 6. The end of the first swing rod 4 is hinged to the first positioning arm 7, and the end of the second swing rod 6 is hinged to the second positioning arm 8.

[0027] In this embodiment, the third positioning arm 9 is vertically fixed inside the opening of the base 1. Adjustment grooves are provided on the third positioning arm 9, the first positioning arm 7, and the second positioning arm 8. A multi-stage linkage robotic arm is formed through the coaxial hinge design of the first swing rod 4, the V-shaped connecting rod 5, and the rotating rod 3. When the rotating rod 3 rotates, the first swing rod 4 and the V-shaped connecting rod 5 swing synchronously. The V-shaped connecting rod 5 is movably connected to the bottom side of the base 1 in the middle to form a fulcrum, and its upper end drives the second swing rod 6 to move within the opening of the base 1, realizing synchronous, reverse, and non-linear angle adjustment of the first positioning arm 7 and the second positioning arm 8. This mechanism can transform the single rotational motion of the rotating rod 3 into multi-directional composite motion of the positioning arms, adapting to the rapid positioning requirements of steel arch frames with different curvatures. The third positioning arm 9 is vertically fixed inside the opening of the base 1, forming an isosceles triangular support structure with the first and second positioning arms 8. The adjustment grooves on the three sets of positioning arms work together, achieving three-point positioning and multi-point tensioning of the steel arch frame through the self-locking sliding shaft 11 and the expansion block 12. This layout disperses the radial force of the steel arch frame into three directions, improving positioning stability by 50% compared to traditional double-arm structures, and can automatically compensate for minor displacements caused by geological subsidence or construction vibrations.

[0028] Please see Figure 2 , Figure 3 In this embodiment, positioning modules are provided on the front sides of the first positioning arm 7, the second positioning arm 8, and the third positioning arm 9. Each positioning module includes a self-locking slide shaft 11 and an expansion block 12. The self-locking slide shaft 11 is slidably connected to the adjustment grooves on the first positioning arm 7, the second positioning arm 8, and the third positioning arm 9. The front end of the self-locking slide shaft 11 is connected to the expansion block 12, which extends into the groove on the outside of the clamp-type steel arch frame and is tensioned and fixed. The self-locking slide shaft 11 is slidably connected to the adjustment grooves on the first, second, and third positioning arms 9, forming a three-dimensional dynamic adjustment system. When the curvature or inner diameter of the steel arch frame changes, the operator adjusts the position of the expansion block 12 by sliding the self-locking slide shaft 11. The front end of the expansion block 12 adopts a tapered gradient structure, which can automatically adapt to changes in the width of the groove on the outside of the steel arch frame, achieving stepless tensioning. The expansion block 12 adopts a replaceable modular design, with the front contact surface offering three specifications: flat, curved, and toothed, to adapt to different groove cross-sectional shapes.

[0029] The embodiments of this utility model are given for the purpose of illustration and description. Although the embodiments of this utility model have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the utility model. Any changes, modifications, substitutions and variations made by those skilled in the art to the above embodiments within the scope of this utility model should be included within the protection scope of this utility model.

Claims

1. A tunnel clamp-type steel arch frame positioning auxiliary device, characterized in that, The positioning auxiliary device is configured on one side of the clamp-type steel arch frame. The positioning auxiliary device includes a base (1), a gear plate (2), a rotating rod (3), a first swing rod (4), a V-shaped connecting rod (5), a second swing rod (6), a first positioning arm (7), a second positioning arm (8), and a third positioning arm (9). The base (1) has an opening in the middle, and the rear ends of the base (1) are provided with anchor rods (10) extending into the ground on both sides. The front ends of the base (1) are respectively hinged to the first positioning arm (7) and the second positioning arm (8). The gear plate (2) is mounted on the base (1). The eccentric side of the front end face of the gear plate (2) is connected to a handle, and the eccentric side of the rear end face of the gear plate (2) is hinged to the rotating rod (3). The gear plate (2) is provided with ratchet teeth for limiting the position.

2. The tunnel clamp-type steel arch frame positioning auxiliary device according to claim 1, characterized in that: The first swing rod (4) and the V-shaped connecting rod (5) are both coaxially hinged to the free end of the rotating rod (3). The V-shaped connecting rod (5) is movably connected to the bottom side of the base (1) in the middle. The upper end of the V-shaped connecting rod (5) extends into the opening of the base (1) and is hinged to the second swing rod (6).

3. The tunnel clamp-type steel arch frame positioning auxiliary device according to claim 1, characterized in that: The first swing arm (4) is hinged to the first positioning arm (7) at its end, and the second swing arm (6) is hinged to the second positioning arm (8) at its end.

4. The tunnel clamp-type steel arch frame positioning auxiliary device according to claim 1, characterized in that: The third positioning arm (9) is vertically fixed to the opening of the base (1), and the third positioning arm (9), the first positioning arm (7) and the second positioning arm (8) are all provided with adjustment grooves.

5. The tunnel clamp-type steel arch frame positioning auxiliary device according to claim 1, characterized in that: Positioning modules are provided on the front side of the first positioning arm (7), the second positioning arm (8) and the third positioning arm (9). The positioning modules include a self-locking slide shaft (11) and a bulging block (12).

6. The tunnel clamp-type steel arch frame positioning auxiliary device according to claim 5, characterized in that: The self-locking slide shaft (11) is slidably connected to the adjustment grooves on the first positioning arm (7), the second positioning arm (8), and the third positioning arm (9). The front end of the self-locking slide shaft (11) is connected to the expansion block (12), which extends into the groove on the outside of the clamp-type steel arch frame and is tensioned and fixed.

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