A rapid installation structure of an arch frame for tunnel construction

Abstract

The utility model discloses a kind of arch frame quick installation structure for tunnel construction, it is related to arch frame main body installation technical field.The utility model includes arch frame main body and connecting rod, two sides of inside arch frame main body are symmetrically provided with rod slot, and positioning recess is symmetrically provided on the arch frame main body on the upper and lower sides of rod slot.The utility model is rotated by driving handle, makes cam rotate together with rotating shaft, makes cam and moves frame up, compresses spring, then positioning protrusion is aligned and is slipped into positioning recess, makes connecting rod slip into arch frame main body, finally loosens driving handle, under the elastic force of spring, it can drive moving frame and reset and move downwards, the lower end of spacing insertion rod is inserted into spacing insertion hole, positioning protrusion can be limited in positioning recess, the quick connection of arch frame main body and connecting rod is realized, by the way of installing connecting rod on side surface, adjacent connecting rod need not to be disassembled, single connecting rod can be disassembled from arch frame main body, it is more convenient to operate.

Description

Technical Field

[0001] This utility model belongs to the field of arch frame installation technology, and in particular relates to a quick installation structure for arch frames used in tunnel construction. Background Technology

[0002] During tunnel excavation, to improve tunnel stability and reduce the possibility of collapse, multiple arch frame bodies are typically erected along the tunnel's length. During installation, the arch frame bodies are transported into the tunnel using a three-arm trolley or other trolleys, supporting them against the tunnel wall. Multiple connecting rods are then installed on the arch frame bodies, extending along the tunnel's length to secure them and reinforce the tunnel, thus improving its stability. A search reveals that patent CN222045801U discloses a rapid installation structure for arch frames in tunnel construction, including an arch frame body. Two mounting holes are provided through the sidewall of the arch frame body, and connecting rods for connecting other arch frame bodies are installed inside these holes. The arch frame body also has two symmetrically symmetrical rectangular cavities. Through holes are formed between these rectangular cavities and the mounting holes, and insertion rods are installed inside these through holes. Multiple insertion holes, each matching the insertion rod, are evenly spaced on the connecting rods. A toggle mechanism for moving the insertion rods upwards is provided inside each rectangular cavity.

[0003] However, in actual use, the applicant found that the connecting rod passes through the main body of the arch frame through the insertion hole opened on the main body of the arch frame. Since the two ends of the connecting rod are connected to the adjacent connecting rods by nuts and connecting sleeves, when disassembling the connecting rod, it is necessary to remove the two connecting rods in front and behind before the connecting rod can be slid out along the axial direction. Therefore, it is impossible to disassemble and remove a single connecting rod. In view of this, we propose a quick installation structure for the arch frame for tunnel construction. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0005] This utility model relates to a quick-installation structure for an arch frame used in tunnel construction, comprising an arch frame body and connecting rods. The arch frame body has symmetrically arranged rod grooves on both sides inside. Positioning grooves are symmetrically arranged on the upper and lower sides of the arch frame body above the rod grooves. A movable frame is elastically connected to the arch frame body above the positioning grooves via a spring. A limiting rod is fixedly installed at the bottom of the movable frame. A cam is provided on the inner side of the movable frame, and the cam is sleeved and fixed on a rotating shaft. The connecting rod is inserted into the rod groove. Positioning protrusions are symmetrically arranged at the top and bottom of the connecting rod. A limiting hole is opened at the top of the positioning protrusion, and the lower end of the limiting rod is inserted into the limiting hole.

[0006] Preferably, the positioning protrusion is connected to the positioning groove.

[0007] Preferably, a guide groove is provided in the main body of the arch frame above the positioning groove, and the moving frame slides along the guide groove.

[0008] Preferably, the spring is disposed in a guide groove above the moving frame, with the upper end of the spring abutting against the top of the guide groove and the lower end of the spring abutting against the top of the moving frame.

[0009] Preferably, the rotating shaft is rotatably connected to the arch frame body via a bearing, and one end of the rotating shaft extends to the outside of the arch frame body and is fitted with a lever.

[0010] Preferably, the end of the cam away from the pivot abuts against the top of the inner side of the movable frame.

[0011] This utility model has the following beneficial effects:

[0012] This utility model discloses a quick-installation structure for an arch frame used in tunnel construction. By turning a lever, the rotating shaft and cam rotate, causing the cam to lift the moving frame upwards, compressing the spring. Then, the positioning protrusion is aligned and slid into the positioning groove, allowing the connecting rod to slide into the arch frame body. Finally, releasing the lever causes the moving frame to move downwards under the elastic force of the spring, allowing the lower end of the limiting rod to insert into the limiting hole, thus limiting the positioning protrusion in the positioning groove. This achieves a quick connection between the arch frame body and the connecting rod. By installing the connecting rod on the side, it is possible to remove a single connecting rod from the arch frame body without disassembling adjacent connecting rods, making the operation more convenient. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying 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.

[0014] Figure 1 This is a structural schematic diagram of a quick-installation arch frame structure for tunnel construction according to the present invention;

[0015] Figure 2 This is a schematic diagram of the main body of the arch frame in the quick installation structure of the arch frame for tunnel construction according to this utility model;

[0016] Figure 3 This is a schematic diagram of the connecting rod in a quick-installation arch frame structure for tunnel construction according to this utility model;

[0017] Figure 4This is a schematic diagram of the internal connection structure between the main body of the arch frame and the connecting rod in a quick-installation arch frame structure for tunnel construction according to this utility model.

[0018] The attached diagram lists the components represented by each number as follows:

[0019] 1. Arch frame body; 11. Rod groove; 12. Positioning groove; 13. Guide slide; 2. Connecting rod; 21. Positioning protrusion; 211. Limiting insertion hole; 3. Moving frame; 31. Limiting insertion rod; 4. Rotating shaft; 41. Actuating handle; 5. Cam; 6. Spring. Detailed Implementation

[0020] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4 As shown, this utility model provides a technical solution:

[0022] A quick-installation arch frame structure for tunnel construction includes an arch frame body 1 and connecting rods 2. The arch frame body 1 has symmetrically arranged rod grooves 11 on both sides inside. Positioning grooves 12 are symmetrically arranged on the upper and lower sides of the arch frame body 1 above the rod grooves 11. A movable frame 3 is elastically connected to the arch frame body 1 above the positioning grooves 12 via a spring 6. A guide groove 13 is provided in the arch frame body 1 above the positioning grooves 12, and the movable frame 3 slides along the guide groove 13. The spring 6 is disposed in the guide groove 13 above the movable frame 3, and its upper end abuts against... The top of the guide groove 13 and the lower end of the spring 6 abut against the top of the moving frame 3. A limit rod 31 is fixedly installed at the bottom of the moving frame 3. A cam 5 is provided on the inner side of the moving frame 3. The cam 5 is sleeved and fixed on the rotating shaft 4. The end of the cam 5 away from the rotating shaft 4 abuts against the top of the inner side of the moving frame 3. The rotating shaft 4 is rotatably connected to the arch frame body 1 through a bearing. One end of the rotating shaft 4 extends to the outside of the arch frame body 1 and is sleeved and fixed with a toggle handle 41. The connecting rod 2 is inserted into the rod groove 11. Positioning protrusions are symmetrically provided at the top and bottom of the connecting rod 2. Positioning protrusion 21 and positioning groove 12 are connected to each other to position the connecting rod 2, so that the limiting rod 31 can be smoothly inserted into the limiting hole 211 and the connecting rod 2 can be limited along the axial direction. The top of the positioning protrusion 21 has a limiting hole 211, and the lower end of the limiting rod 31 is inserted into the limiting hole 211. By turning the lever 41, the rotating shaft 4 and cam 5 are driven to rotate, so that the cam 5 pushes the moving frame 3 upward, compressing the spring 6. Then the positioning protrusion 21 is aligned and slid in. In the positioning groove 12, the connecting rod 2 slides into the arch frame body 1. Finally, the lever 41 is released, and under the elastic force of the spring 6, the moving frame 3 moves downward to reset, so that the lower end of the limiting rod 31 is inserted into the limiting hole 211, thus limiting the positioning protrusion 21 in the positioning groove 12. This achieves a quick connection between the arch frame body 1 and the connecting rod 2. By installing the connecting rod 2 on the side, there is no need to disassemble adjacent connecting rods 2, and a single connecting rod 2 can be removed from the arch frame body 1, making the operation more convenient.

[0023] Working principle: When connecting the connecting rod 2 to the arch frame body 1, the actuating handle 41 can be manually rotated to drive the rotating shaft 4 to rotate. The rotation of the rotating shaft 4 can drive the cam 5 to rotate. The cam 5 pushes the moving frame 3 upward along the guide groove 13, which can compress the spring 6 and move the lower end of the limiting insert 31 out of the positioning groove 12. At this time, the positioning protrusion 21 can be aligned and slid into the positioning groove 12, so that the connecting rod 2 is locked into the rod groove 11. Then, the actuating handle 41 is released. At this time, under the elastic force of the spring 6, the moving frame 3 can be driven to move downward, so that the lower end of the limiting insert 31 is inserted into the limiting insert hole 211, and the positioning protrusion 21 is limited in the positioning groove 12. The connecting rod 2 and the arch frame body 1 can be quickly connected. Finally, the two adjacent connecting rods 2 can be connected end to end by using the nut and connecting sleeve. By reversing the above steps, a single connecting rod 2 can be removed from the arch frame body 1.

[0024] The text shows and describes the basic principles, main features and advantages of this utility model. The standard parts used in this utility model can all be purchased from the market, and the irregular parts can be customized according to the description and drawings. The specific connection methods of each part can all adopt conventional methods such as bolts, rivets and welding that are mature in the prior art. The machinery, parts and equipment can all adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art. This part will not be described in detail in the text.

[0025] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0026] The above are merely preferred embodiments of the present utility model and do not limit the present utility model. Any modifications to the technical solutions described in the foregoing embodiments or equivalent substitutions of some of the technical features shall fall within the protection scope of the present utility model.

Claims

1. A quick-installation structure for an arch frame used in tunnel construction, comprising an arch frame body (1) and connecting rods (2), characterized in that: The arch frame body (1) has symmetrically provided rod grooves (11) on both sides inside. The arch frame body (1) on the upper and lower sides of the rod groove (11) has symmetrically provided positioning grooves (12). The arch frame body (1) above the positioning groove (12) is elastically connected to a moving frame (3) by a spring (6). The bottom of the moving frame (3) is fixedly provided with a limiting rod (31). The inner side of the moving frame (3) is provided with a cam (5). The cam (5) is sleeved and fixed on the rotating shaft (4). The connecting rod (2) is inserted into the rod groove (11). The top and bottom of the connecting rod (2) are symmetrically provided with positioning protrusions (21). The top of the positioning protrusion (21) is provided with a limiting hole (211). The lower end of the limiting rod (31) is inserted into the limiting hole (211).

2. The rapid installation structure for an arch frame in tunnel construction according to claim 1, characterized in that, The positioning protrusion (21) is connected to the positioning groove (12).

3. The rapid installation structure for an arch frame in tunnel construction according to claim 1, characterized in that, A guide groove (13) is provided in the arch frame body (1) above the positioning groove (12), and the moving frame (3) slides along the guide groove (13).

4. The rapid installation structure for an arch frame in tunnel construction according to claim 1, characterized in that, The spring (6) is disposed in the guide groove (13) above the moving frame (3), with the upper end of the spring (6) abutting the top of the guide groove (13) and the lower end of the spring (6) abutting the top of the moving frame (3).

5. The rapid installation structure for an arch frame in tunnel construction according to claim 1, characterized in that, The rotating shaft (4) is rotatably connected to the arch frame body (1) through a bearing. One end of the rotating shaft (4) extends to the outside of the arch frame body (1) and is fitted with a toggle handle (41).

6. The rapid installation structure for an arch frame in tunnel construction according to claim 1, characterized in that, The end of the cam (5) away from the pivot (4) abuts against the top of the inner side of the moving frame (3).

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