Auxiliary device for tunnel steel arch mounting construction

Abstract

The utility model provides an auxiliary device for tunnel steel arch mounting construction, which comprises a plurality of steel arches erected in a tunnel in an array manner, a positioning adjusting mechanism is arranged between two sides of two adjacent steel arches, and the positioning adjusting mechanism is used for adjusting the distance between the two steel arches; the positioning adjusting mechanism comprises clamping devices at the two ends, the clamping devices are fixed to the steel arch, lead screws are fixedly arranged at the ends of the clamping devices, and a bidirectional screw sleeve is arranged between the clamping devices at the two ends and is in threaded connection with the lead screws. By means of threaded connection of the lead screw and the two-way screw sleeve, fine adjustment of the distance between the steel arches can be achieved, extremely high adjustment precision is achieved, and the strict requirements of tunnel engineering for structural stability and size precision are met.

Description

Technical Field

[0001] The utility model relates to the field of tunnel construction, in particular to an auxiliary device used for installation and construction of tunnel steel arch frames. Background Art

[0002] In tunnel construction, steel arches are an important temporary support structure that is crucial to maintaining the stability and safety of the tunnel excavation face. However, in the actual construction process, especially in tunnel environments with complex geological conditions and limited space, there are many challenges, especially the precise installation and reinforcement of steel arches.

[0003] Due to the irregularity of tunnel cross-sectional dimensions, measurement errors or minor changes during the construction process, the pre-set steel arch spacing is difficult to accurately match when it is actually placed on site. The inconsistency of the spacing directly affects subsequent welding operations, increasing construction difficulty and safety hazards.

[0004] If the spacing between the steel arches is inaccurate, it will directly hinder the smooth progress of welding work. Welding operations require a stable and suitable working space to ensure the quality of the weld and the overall stability of the structure. If the spacing is too small or too large, it will make it difficult for the welder to operate, affecting the welding quality, and may even require the position of the steel arch to be readjusted, resulting in a waste of time and resources.

[0005] Traditional manual adjustment methods rely on a lot of manpower and experience, which is not only time-consuming and laborious, but also has limited adjustment accuracy, which seriously slows down the overall construction progress and affects the project cycle and cost control. Improper spacing adjustment will also increase the safety risks of the construction site. Unstable steel arches may cause collapse accidents, while incorrect welding operations may cause fires or structural failures, threatening the lives of construction workers. Utility Model Content

[0006] The main purpose of the utility model is to provide an auxiliary device for tunnel steel arch installation construction to solve the problems in the above-mentioned background technology.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is: comprising a plurality of steel arch frames arranged in an array in a tunnel, a positioning adjustment mechanism is provided between the two sides of two adjacent steel arch frames, and the positioning adjustment mechanism is used to adjust the distance between the two steel arch frames;

[0008] The positioning and adjusting mechanism comprises clamping devices at both ends, the clamping devices are fixed on the steel arch frame, screw rods are fixed at the ends of the clamping devices, bidirectional thread sleeves are arranged between the clamping devices at both ends, and the bidirectional thread sleeves are threadedly connected with the screw rods.

[0009] Preferably, the clamping device includes a locking plate and a fixing plate, the locking plate and the fixing plate are L-shaped, the locking plate and the fixing plate are respectively against two sides of the steel arch frame, and the locking plate and the fixing plate are fixed by bolts.

[0010] Preferably, a screw is fixedly provided at the end of the fixing plate, the screw passes through the locking plate, and is fixed to the locking plate by a locking nut.

[0011] Preferably, L-shaped wing plates are fixedly provided on both sides of the fixing plate, and both sides of the locking plate slide against the L-shaped wing plates.

[0012] Preferably, the screw rod is fixed on a fixed plate in the clamping device, and the threads at both ends of the bidirectional thread sleeve have opposite rotation directions.

[0013] Preferably, the middle part of the bidirectional wire sleeve is a polygonal shaft, or a hand wheel is fixedly provided thereon.

[0014] The utility model provides an auxiliary device for tunnel steel arch installation construction, and the beneficial effects are:

[0015] 1. Through the threaded connection between the lead screw and the bidirectional thread sleeve, the spacing of the steel arch frames can be fine-tuned to achieve extremely high adjustment accuracy, meeting the strict requirements of tunnel engineering on structural stability and dimensional accuracy.

[0016] 2. The bidirectional thread sleeve with handwheel or polygonal shaft design allows the operator to easily adjust the spacing by simply rotating the handwheel or using a tool to clamp the polygonal shaft for rotation, which greatly simplifies the operation process and improves construction efficiency.

[0017] 3. The L-shaped locking plate and fixing plate design, coupled with double fixation by bolts and locking nuts, ensures a firm connection between the clamping device and the steel arch frame, maintaining good stability even in the complex environment of tunnel construction.

[0018] 4. The opposite thread design at both ends of the bidirectional thread sleeve enables a wide range of adjustment in a limited space, which is suitable for the installation requirements of steel arch frames with different diameters and spans, and improves the versatility and applicability of the device.

[0019] 5. The L-shaped wing plate provides a stable sliding track for the locking plate, which not only ensures the smoothness and stability during the adjustment process, but also provides convenience for later maintenance and adjustment, reduces construction risks, and improves operation safety.

[0020] 6. The design achieves precise control through mechanical structure, reduces dependence on complex electronic or hydraulic systems, and reduces costs. At the same time, due to its modularity and easy maintenance, it is conducive to long-term use and reuse, and complies with the principle of sustainable development. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0022] Figure 1 This is a schematic diagram of the installation of the utility model tunnel steel arch frame;

[0023] Figure 2 This utility model Figure 1 A local enlarged view b;

[0024] Figure 3 This utility model Figure 2 AA section view in;

[0025] In the figure: steel arch frame 1; positioning adjustment mechanism 2; locking plate 201; bidirectional thread sleeve 202; fixing plate 203; locking nut 204; screw rod 205; screw rod 206; L-shaped wing plate 207. DETAILED DESCRIPTION

[0026] like Figures 1 to 3 As shown, an auxiliary device for tunnel steel arch installation construction includes a plurality of steel arches 1 arrayed in the tunnel, and a positioning adjustment mechanism 2 is provided between the two sides of two adjacent steel arches 1, and the positioning adjustment mechanism 2 is used to adjust the distance between the two steel arches 1;

[0027] The positioning and adjusting mechanism 2 includes clamping devices at both ends, the clamping devices are fixed on the steel arch frame 1, and screw rods 205 are fixed at the ends of the clamping devices. A bidirectional thread sleeve 202 is provided between the clamping devices at both ends, and the bidirectional thread sleeve 202 is threadedly connected with the screw rod 205. The clamping devices in the positioning and adjusting mechanism 2 are respectively fixed on two adjacent steel arch frames 1, and then the clamping devices and the two steel arch frames 1 can be driven to move relative to each other by rotating the bidirectional thread sleeve 202, thereby achieving the purpose of adjusting the distance between the two steel arch frames 1.

[0028] The positioning adjustment mechanism 2 realizes fine adjustment of the spacing between the steel arch frames. Each positioning adjustment mechanism is located between two adjacent steel arch frames 1, ensuring the stability and accuracy of the entire tunnel steel arch frame array.

[0029] The clamping devices are fixed on both sides of each steel arch, firmly grasping the steel arch through physical clamping force, ensuring the stability of the steel arch position during adjustment. It can prevent the steel arch from moving or tilting unnecessarily when adjusting the spacing.

[0030] A screw 205 is mounted at each end of the clamping device, and the two screws are connected by a middle bidirectional thread sleeve 202. The bidirectional thread sleeve is a component that can simultaneously accept the rotation of the two screws and produce axial displacement, and its threaded connection with the screw allows precise linear motion during rotation.

[0031] The operator rotates the bidirectional thread sleeve 202 manually or with an electric tool, which causes the screw rod 205 to move along its axial direction. Since the clamping device is fixedly connected to the screw rod, the clamping device and the steel arch frame fixed thereto will also move accordingly. By accurately controlling the rotation direction and number of turns of the bidirectional thread sleeve, the distance between the two steel arch frames can be finely adjusted.

[0032] Preferably, the clamping device includes a locking plate 201 and a fixing plate 203, the locking plate 201 and the fixing plate 203 are L-shaped, the locking plate 201 and the fixing plate 203 are respectively against the two sides of the steel arch frame 1, and the locking plate 201 and the fixing plate 203 are locked and fixed by bolts. The locking plate 201 and the fixing plate 203 are respectively against the two sides of the steel arch frame 1 to clamp it, and are locked and fixed by bolts to achieve connection and fixation of the steel arch frame 1.

[0033] The locking plate 201 and the fixing plate 203 are both L-shaped structures, so that they can fit the surface of the steel arch frame 1 more closely, providing a stable support point and clamping effect. The L-shaped design increases the contact area, helps to disperse the force, avoid local stress concentration, and thus protect the steel arch frame from damage.

[0034] The locking plate 201 and the fixing plate 203 are respectively installed on both sides of the steel arch frame 1. Through their L-shaped structure, they can effectively "hold" the steel arch frame to ensure stability when adjusting the spacing. The close fit between the two plates and the way they directly abut against the steel arch frame provide good initial positioning and support for subsequent bolt fixing.

[0035] After the locking plate 201 and the fixing plate 203 are correctly installed and abutted against each other, bolts are passed through the two plates through the preset holes and tightened with nuts, thus completing the firm fixation of the steel arch frame 1. The bolt connection provides an adjustable degree of tightening, which is convenient for adjusting the clamping force according to actual needs, ensuring that the steel arch frame neither slides nor is over-pressed, and achieving the best fixing effect.

[0036] Preferably, a screw 206 is fixed to the end of the fixing plate 203, the screw 206 passes through the locking plate 201, and is fixed to the locking plate 201 through a locking nut 204. Through the threaded connection between the locking nut 204 and the screw 206, the fixing plate 203 and the locking plate 201 can be clamped and fixed on the steel arch frame 1.

[0037] A screw rod 206 is installed at the end of the fixing plate 203. The screw rod 206 not only penetrates the locking plate 201, but also its exposed portion can be adjusted by a locking nut 204, thereby realizing the function of precise clamping from the side.

[0038] By rotating the locking nut 204, a linear motion of advancement or retraction can be generated along the thread direction of the screw rod 206. When the locking nut 204 is tightened toward the fixing plate 203, the locking plate 201 and the fixing plate 203 are forced to move closer to each other, thereby applying a uniform and strong clamping force to the steel arch frame 1 sandwiched therebetween, thereby achieving a stable fixing effect.

[0039] Preferably, L-shaped wing plates 207 are fixed on both sides of the fixing plate 203, and both sides of the locking plate 201 slide against the L-shaped wing plates 207. The locking plate 201 slides against the fixing plate 203 through the limitation of the L-shaped wing plates 207 on both sides, ensuring the stability of the relative movement of the locking plate 201 and the fixing plate 203.

[0040] The L-shaped wing plates 207 are fixed on both sides of the fixing plate 203 to form a guide groove or a slide rail, and the two sides of the locking plate 201 can be inserted into these L-shaped wing plates to slide. This provides a precise guide path for the movement of the locking plate 201, and also ensures the lateral stability of the locking plate during the sliding process through the limiting effect of the wing plates to prevent deviation or shaking.

[0041] By limiting the locking plate 201 through the L-shaped wing plate, the relative position between the locking plate and the fixed plate can be kept stable even when a large clamping force is applied or there is a slight external disturbance. This is particularly important for application scenarios that require precise adjustment of the spacing between steel arch frames.

[0042] Preferably, the screw rod 205 is fixed on the fixing plate 203 in the clamping device, and the threads at both ends of the bidirectional thread sleeve 202 are in opposite directions. By rotating the bidirectional thread sleeve 202, the clamping devices at both ends can be driven to move relative to each other, thereby adjusting the spacing between the two steel arches 1.

[0043] The threads at both ends of the bidirectional thread sleeve 202 have opposite rotation directions, so that the clamping devices connected at the two ends can move synchronously in opposite directions, thereby adjusting the distance between the two steel arches 1.

[0044] The operator only needs to rotate the bidirectional thread sleeve 202 to accurately control the distance between the two steel arches, and it becomes simple and efficient to expand or reduce the distance. This method not only improves the flexibility of construction, but also greatly enhances the control ability of installation accuracy.

[0045] Preferably, the middle part of the bidirectional silk sleeve 202 is a polygonal shaft, or is provided with a hand wheel. By clamping the polygonal shaft with a wrench, it is convenient to drive the rotation of the bidirectional silk sleeve 202, or the manual drive hand wheel rotation also can drive the bidirectional silk sleeve 202 to rotate.

[0046] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. An auxiliary device for the installation and construction of a tunnel steel arch frame, comprising a plurality of steel arch frames (1) arranged in an array in a tunnel, characterized in that: A positioning adjustment mechanism (2) is provided between the two sides of two adjacent steel arch frames (1), and the positioning adjustment mechanism (2) is used to adjust the distance between the two steel arch frames (1); The positioning adjustment mechanism (2) comprises clamping devices at both ends, the clamping devices are fixed on the steel arch frame (1), a screw rod (205) is fixedly arranged at the end of the clamping device, a bidirectional thread sleeve (202) is arranged between the clamping devices at both ends, and the bidirectional thread sleeve (202) is threadedly connected to the screw rod (205).

2. The auxiliary device for tunnel steel arch installation construction according to claim 1 is characterized by: The clamping device comprises a locking plate (201) and a fixing plate (203); the locking plate (201) and the fixing plate (203) are L-shaped; the locking plate (201) and the fixing plate (203) are respectively abutted against two sides of the steel arch frame (1); and the locking plate (201) and the fixing plate (203) are locked and fixed by bolts.

3. The auxiliary device for tunnel steel arch installation construction according to claim 2 is characterized by: A screw rod (206) is fixedly disposed at the end of the fixing plate (203); the screw rod (206) passes through the locking plate (201) and is fixed to the locking plate (201) via a locking nut (204).

4. The auxiliary device for tunnel steel arch installation construction according to claim 2 is characterized by: L-shaped wing plates (207) are fixedly provided on both sides of the fixing plate (203), and both sides of the locking plate (201) abut against and slide inside the L-shaped wing plates (207).

5. The auxiliary device for tunnel steel arch installation construction according to claim 1 is characterized by: The screw rod (205) is fixed on a fixing plate (203) in the clamping device, and the threads at both ends of the bidirectional thread sleeve (202) have opposite rotation directions.

6. The auxiliary device for tunnel steel arch installation construction according to claim 1 is characterized by: The middle part of the bidirectional thread sleeve (202) is a polygonal shaft, or a hand wheel is fixedly arranged thereon.

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