A tunnel arch section steel arch installation support device

Abstract

The utility model discloses a tunnel arch part section steel arch frame installation support device relates to tunnel construction support equipment technical field, the problem of low support reliability caused by the lack of angle limiting of the support structure in the prior art is solved. The utility model discloses at least a pair of support base plate, and the distance between the adjacent support base plate is adjusted and locked through the connecting mechanism adjustable connection, and the connecting mechanism is used for adjusting and locking the distance between the adjacent support base plate, and the connecting seat is equipped on the support base plate, and the first support mechanism is hingedly arranged on the connecting seat, and the locking mechanism for adjusting the angle of first support mechanism is equipped on the connecting seat, and the second support mechanism is fixedly arranged on the support base plate, and the corresponding first support mechanism between the adjacent support base plate, and the corresponding second support mechanism are connected through the telescopic link. Through setting locking mechanism, the support angle of first support mechanism can be locked, thereby improving the anti-interference ability such as anti-vibration in the construction process.

Description

Technical Field

[0001] This utility model relates to the technical field of tunnel construction support equipment, and in particular to a support device for installing a steel arch frame in the tunnel arch. Background Technology

[0002] In tunnel construction, steel arch frames are the core components of the initial support of the tunnel. Their installation accuracy and stability directly determine the load-bearing capacity and construction safety of the tunnel structure. Since the tunnel arch is arc-shaped and the steel arch frame has a large self-weight, the traditional manual carrying and rope pulling installation method is inefficient. Therefore, some support components are used to temporarily support and position the steel arch frame.

[0003] For example, Chinese patent publication number "CN219034759U" discloses "a rapid support and positioning device for tunnel steel arch frame erection, which includes a spacing adjustment and positioning component and two support mechanisms... The support component can support the steel arch frame, the first adjustment component can position the two bases, and the second adjustment component can position the two corresponding support components located on the two bases respectively. This application has the effect of improving the quality and speed of erecting the steel arch frame".

[0004] However, in the aforementioned patent, the support rod is only connected to the base by a hinge, without any angle limiting or locking mechanism. In actual construction scenarios, the tunnel interior is often accompanied by external forces such as surrounding rock disturbance and mechanical vibration (such as rock drill operation and vehicle passage). The hinge is prone to unexpected rotation due to the lack of fixed constraints, which causes the support rod angle to deviate, thereby causing the steel arch frame above to sway or shift, affecting the support effect on the steel arch frame and reducing the reliability of the support. Utility Model Content

[0005] To address the shortcomings in the aforementioned background technology, this utility model proposes a tunnel arch steel arch frame installation support device, which solves the problem of low support reliability caused by the lack of angle limiting in the existing support structure.

[0006] The technical solution of this utility model is implemented as follows: a support device for installing a steel arch frame in a tunnel arch includes at least one pair of support base plates. Adjacent support base plates are adjustablely connected by a connecting mechanism, which is used to adjust and lock the distance between adjacent support base plates. A connecting seat is provided on the support base plate, and a first support mechanism is hinged on the connecting seat. A locking mechanism for adjusting the angle of the first support mechanism is provided on the connecting seat. A second support mechanism is fixedly provided on the support base plate. Corresponding first support mechanisms and corresponding second support mechanisms on adjacent support base plates are connected by telescopic rods.

[0007] Preferably, both the first and second support mechanisms include a support rod, and a support member is provided on the support rod. The upper end of the support rod has a threaded hole, and the support member includes a threaded rod that mates with the threaded hole, with a support block fixedly provided at the top end of the threaded rod.

[0008] Preferably, the support rod end of the first support mechanism is fixedly provided with a rotating shaft, and the rotating shaft is rotatably engaged with the connecting seat. The end of the rotating shaft extends out of the connecting seat, and the locking mechanism includes a disc coaxially fixedly provided at the end of the rotating shaft, a connecting plate fixedly provided on one side of the connecting seat, and a locking rod threadedly connected to the connecting plate, the end of the locking rod engaging with the outer wall of the disc.

[0009] Preferably, the outer wall of the disc has several limiting holes arranged in a circumferential array, and the inner end of the locking rod is inserted into the corresponding limiting hole to achieve angle locking. A handle is fixedly provided at the tail end of the locking rod. Corresponding connecting plates between adjacent support base plates are connected by auxiliary telescopic tubes.

[0010] Preferably, the adjusting mechanism includes a sleeve and a movable plate disposed on opposite surfaces of adjacent support base plates, the sleeve and the movable plate being inserted into and slidably fitted together. The sleeve is provided with fastening bolts, and the movable plate has several connecting holes for engaging with the fastening bolts.

[0011] The beneficial effects of this utility model are as follows: By setting at least one pair of supporting base plates and connecting them through a connecting mechanism, the distance between adjacent supporting base plates can be adjusted and locked according to actual needs, thereby adjusting the support range. By setting a first supporting mechanism, the angle can be adaptively adjusted on-site according to the curvature of the steel arch to meet the support requirements in the tilt direction. By setting a locking mechanism, the support angle of the first supporting mechanism can be locked, thereby improving the anti-vibration and anti-interference capabilities during construction, preventing unexpected rotation of the support rods due to construction vibration, surrounding rock disturbance, and other external forces, significantly improving the support stability of the steel arch, and reducing the risk of swaying, displacement, or even falling of the steel arch. Setting a second supporting mechanism enables vertical support, further improving the reliability of the support. Attached Figure Description

[0012] To more clearly illustrate the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial structural schematic diagram of the present invention; Figure 3 for Figure 2 Enlarged schematic diagram of section A of the structure; Figure 4 This is a partial cross-sectional view of the support mechanism in this utility model; Figure 5 This is a diagram showing the state of the steel arch frame being supported in this utility model.

[0014] In the diagram: 1. Support base plate; 2. Adjustment mechanism; 21. Sleeve; 22. Moving plate; 23. Fastening bolt; 24. Round opening; 3. Connecting seat; 4. First support mechanism; 41. Support rod; 42. Support component; 421. Threaded rod; 422. Support block; 5. Locking mechanism; 51. Connecting plate; 52. Locking rod; 53. Telescopic plate; 6. Telescopic rod; 7. Rotating shaft; 8. Disc; 9. Limiting hole; 10. Second support mechanism. Detailed Implementation

[0015] 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.

[0016] like Figure 1 , 5 As shown in Embodiment 1, a support device for installing a steel arch frame in a tunnel arch includes at least one pair of support base plates 1. Adjacent support base plates 1 are tunably connected by a connecting mechanism 2. The connecting mechanism 2 is used to adjust and lock the distance between adjacent support base plates 1, thereby adjusting and locking the distance between adjacent support base plates according to actual needs and thus adjusting the support range.

[0017] A connecting seat 3 is provided on the supporting base plate 1, and a first supporting mechanism 4 is hinged to the connecting seat 3. The first supporting mechanism can be adaptively adjusted on-site according to the curvature of the steel arch to meet the support requirements in the tilt direction. The connecting seat 3 is provided with a locking mechanism 5 for adjusting the angle of the first supporting mechanism 4. The locking mechanism can lock the support angle of the first supporting mechanism, thereby improving the anti-vibration and anti-interference capabilities during construction, avoiding unexpected rotation of the support rod due to external forces such as construction vibration and surrounding rock disturbance, significantly improving the support stability of the steel arch, and reducing the risk of swaying, displacement, or even falling of the steel arch. A second supporting mechanism 10 is fixedly provided on the supporting base plate 1. The second supporting mechanism 10 is vertically set and can achieve vertical support, further improving the reliability of the support.

[0018] In actual use, the spacing between the two support base plates 1 is first adjusted according to the width of the steel arch frame by adjusting mechanism 2. Then, through the coordinated action of multiple sets of first support mechanisms 4 and second support mechanisms 10, stable support can be formed for different parts of the steel arch frame. At the same time, the locking mechanism 5 can be used to ensure the stability of the first support mechanisms 4 on both sides during use, and prevent them from rotating unexpectedly under the action of external forces such as construction vibration, further ensuring the support stability of the first support mechanism 4 for the steel arch frame.

[0019] In Example 2, based on Example 1, both the first support mechanism 4 and the second support mechanism 10 include a support rod 41, on which a support member 42 is provided. The support rod of the second support mechanism 10 is vertically arranged and fixedly connected to the support base plate 1. The end of the support rod 41 of the first support mechanism 4 is fixedly provided with a rotating shaft 7, which is rotatably engaged with the connecting seat 3 through the rotating shaft 7.

[0020] Furthermore, such as Figure 4 As shown, in order to achieve the purpose of adjusting the support length of the first support mechanism 4 and the second support mechanism 10, the upper end of the support rod 41 is provided with a threaded hole, the support member 42 includes a threaded rod 421 that mates with the threaded hole, and a support block 422 is fixedly provided at the top end of the threaded rod 421.

[0021] In addition, in order to maintain synchronous adjustment between the corresponding first support mechanisms 4 and between the corresponding second support mechanisms 10, and to maintain structural stability, the corresponding first support mechanisms 4 and between the corresponding second support mechanisms 10 on adjacent support base plates 1 are connected by telescopic rods 6.

[0022] When adjusting the spacing between the two support base plates 1, the telescopic rod 6 will extend and retract synchronously with the movement of the support base plates 1, ensuring that the support rods 41 on both sides always maintain a symmetrical distribution and move synchronously. When supporting the steel arch frame, rotate the threaded rod 421 at the upper end of each support rod 41 so that the support block 422 accurately abuts against the bottom of the steel arch frame. Through the coordinated support of the middle support rod 41 and the support rods 41 on both sides, the steel arch frame is stably lifted.

[0023] As a further specific implementation method, such as Figure 2 , 3 As shown, the end of the rotating shaft 7 extends through the connecting seat 3. The locking mechanism 5 includes a disc 8 coaxially fixedly mounted at the end of the rotating shaft 7. A connecting plate 51 is fixedly mounted on one side of the connecting seat 3, and a locking rod 52 is threadedly connected to the connecting plate 51. The end of the locking rod 52 engages with the outer wall of the disc 8. In this embodiment, a plurality of limiting holes 9 arranged in a circumferential array are provided on the outer wall of the disc 8. The inner end of the locking rod 52 is inserted into the corresponding limiting hole 9 to achieve angle locking.

[0024] When adjusting the angle of the support rods 41 located on both sides, first rotate the locking rod 52 to move it out of the corresponding limiting hole 9 on the disc 8, releasing the locking constraint on the rotating shaft 7, until the support rod 41 is adjusted to the angle that matches the support requirements of the steel arch frame. After the angle is determined, rotate the locking rod 52 in the opposite direction to re-insert it into the corresponding limiting hole 9 on the disc 8. The rotating shaft 7 is fixed by the insertion and cooperation of the locking rod 52 and the limiting hole 9, thereby locking the support angle of the support rod 41 to match the arc profile of the steel arch frame and to prevent it from rotating unexpectedly during construction.

[0025] As a further optional implementation, a handle is fixedly provided at the tail end of the locking rod 52 to facilitate the rotation adjustment of the locking rod. Adjustment is made by gripping the handle. In addition, the corresponding connecting plates between adjacent support base plates 1 are connected by auxiliary telescopic tubes 53 to further improve the overall stability of the structure.

[0026] In Example 3, based on Example 2, the adjusting mechanism 2 includes a sleeve 21 and a movable plate 22 disposed on opposite surfaces of adjacent support base plates 1. The sleeve 21 and the movable plate 22 are inserted into and slidably fitted together. The sleeve 21 is provided with fastening bolts 23, and the movable plate 22 is provided with several connecting holes 24 for use with the fastening bolts 23.

[0027] When adjusting the spacing between the two support base plates 1, first tighten the fastening bolt 23 so that the bottom end of the fastening bolt 23 is completely removed from the corresponding connecting hole 24 on the moving plate 22, releasing the fixed constraint between the sleeve 21 and the moving plate 22. Then, according to the width of the steel arch frame to be installed, pull the front support base plate 1 forward or backward or push the rear support base plate 1, causing the moving plate 22 to slide along the length direction within the sleeve 21 until the spacing between the two support base plates 1 matches the specifications of the steel arch frame. After the spacing is adjusted to the correct position, tighten the fastening bolt 23 again so that the bottom end of the fastening bolt 23 is reinserted into the corresponding connecting hole 24 on the moving plate 22, locking the sleeve 21 and the moving plate 22, thereby fixing the spacing between the two support base plates 1, which facilitates subsequent support of the steel arch frame.

[0028] In practical use, when installing and supporting the steel arch frame of the tunnel arch, the distance between the two support base plates 1 is first adjusted according to the width specifications of the steel arch frame to be installed. Specifically, the fastening bolts 23 are first tightened so that the bottom end of the fastening bolts 23 moves out of the moving round hole 24. Then, the front support base plate 1 is pulled or the rear support base plate 1 is pushed. During this process, the telescopic rods 6 between the corresponding support rods 41 on both sides will extend and retract synchronously to ensure that the support rods 41 on both sides always maintain a symmetrical distribution and move synchronously. After the distance between the two support base plates 1 is adapted to the width of the steel arch frame, the fastening bolts 23 are tightened again so that the bottom end is inserted into the corresponding connecting hole 24 to lock the distance between the adjacent support base plates 1. Then, the locking rod 52 is rotated so that it moves out of the corresponding limiting hole 9 on the disc 8 to release the lock on the rotating shaft 7. Then, the support rods 41 on both sides are rotated. The support rod 41 drives the rotating shaft 7 and the disk 8 fixed thereto to rotate synchronously. After the angle of the support rod 41 is adjusted to meet the support requirements of the steel arch frame, the locking rod 52 is rotated in the opposite direction to re-insert it into the corresponding limiting hole 9 on the disk 8, thereby locking the angle of the support rod 41. Finally, by rotating the threaded rod 421 in the threaded groove at the upper end of each support rod 41, the extension length of the threaded rod 421 is adjusted so that the support block 422 at the top of the threaded rod 421 accurately abuts against the bottom of the steel arch frame. Through the coordinated action of the support rod 41 in the middle and the support rods 41 on both sides with the locked angle, a multi-point stable support is formed, thereby completing the installation and support operation of the steel arch frame of the tunnel arch. The whole process can effectively avoid the unexpected rotation of the support rod 41 or the displacement of the support base plate 1 caused by construction vibration, ensuring the installation accuracy and support stability of the steel arch frame.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A support device for installing a steel arch frame in a tunnel arch, characterized in that: It includes at least one pair of support base plates (1), and the adjacent support base plates (1) are adjustablely connected by a connecting mechanism (2). The connecting mechanism (2) is used to adjust and lock the distance between the adjacent support base plates (1). The support base plate (1) is provided with a connecting seat (3), and a first support mechanism (4) is hinged on the connecting seat (3). The connecting seat (3) is provided with a locking mechanism (5) for adjusting the angle of the first support mechanism (4). A second support mechanism (10) is fixedly provided on the support base plate (1). The corresponding first support mechanism (4) and the corresponding second support mechanism (10) on the adjacent support base plates (1) are connected by a telescopic rod (6).

2. The tunnel arch steel arch frame installation support device according to claim 1, characterized in that: Both the first support mechanism (4) and the second support mechanism (10) include a support rod (41), and a support member (42) is provided on the support rod (41).

3. The tunnel arch steel arch frame installation support device according to claim 2, characterized in that: The upper end of the support rod (41) is provided with a threaded hole, and the support member (42) includes a threaded rod (421) that mates with the threaded hole. The top end of the threaded rod (421) is fixed with a support block (422).

4. The tunnel arch steel arch frame installation support device according to claim 3, characterized in that: The first support mechanism (4) has a rotating shaft (7) fixedly installed at the end of the support rod (41), and rotates in cooperation with the connecting seat (3) through the rotating shaft (7).

5. The tunnel arch steel arch frame installation support device according to claim 4, characterized in that: The end of the rotating shaft (7) passes through the connecting seat (3). The locking mechanism (5) includes a disc (8) coaxially fixed at the end of the rotating shaft (7). A connecting plate (51) is fixedly provided on one side of the connecting seat (3). A locking rod (52) is threadedly connected to the connecting plate (51). The end of the locking rod (52) cooperates with the outer wall of the disc (8).

6. The tunnel arch steel arch frame installation support device according to claim 5, characterized in that: The outer wall of the disc (8) is provided with several limiting holes (9) arranged in a circular array. The inner end of the locking rod (52) is inserted into the corresponding limiting hole (9) to achieve angle locking.

7. The tunnel arch steel arch frame installation support device according to claim 6, characterized in that: A handle is fixedly provided at the end of the locking lever (52).

8. The tunnel arch steel arch frame installation support device according to claim 5, characterized in that: The corresponding connecting plates (51) between adjacent support base plates (1) are connected by auxiliary telescopic pipes (53).

9. The tunnel arch steel arch frame installation support device according to any one of claims 1 to 8, characterized in that: The adjustment mechanism (2) includes a sleeve (21) and a movable plate (22) disposed on opposite surfaces of adjacent support base plates (1), with the sleeve (21) and the movable plate (22) being inserted into and slidingly engaged.

10. The tunnel arch steel arch frame installation support device according to claim 9, characterized in that: The sleeve (21) is provided with fastening bolts (23), and the moving plate (22) is provided with several connecting holes (24) for use with the fastening bolts (23).

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