Tunnel lagging jack convenient to install

Abstract

The utility model discloses a tunnel arch frame convenient to install, which comprises a first frame body, the two ends of the first frame body are respectively hinged with a group of second frame bodies, the two groups of second frame bodies are arranged in a mirroring manner and can be locked with the first frame body through a limiting assembly, the first frame body and the two groups of second frame bodies form a complete arch frame, and the two sides of the arch frame are respectively provided with a clamping groove. Due to the fact that the first frame body is hinged to the second frame body, the arch frame formed by the first frame body and the second frame body can be folded, storage and installation are convenient, in the using process, the second frame body only needs to be rotated to be unfolded, the arch frame can be unfolded, then the shielding piece is inserted into the clamping groove, and the arch frame can be folded conveniently. Compared with the prior art, the tunnel lagging jack has the advantages that the tunnel lagging jack can be quickly mounted and fixed, and the mounting efficiency of the tunnel lagging jack is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel arch frames, in particular to a tunnel arch frame which is easy to install. Background Art

[0002] The tunnel arch is one of the most important components in tunnel engineering, mainly used to support the top of the tunnel. Its shape is similar to an arch bridge, and its main function is to bear the loads of the roads and buildings on the ground, and transfer these loads to the foundation. Specifically, the functions of the tunnel arch include bearing the weight and pressure of the top of the tunnel, dispersing the pressure of the surrounding soil on the tunnel, and serving as a support structure for advancement during tunnel construction.

[0003] Some of the arch frames in the prior art adopt a modular design, which provides certain conveniences compared to the method of using all welding. However, the connection between the components generally still requires the cooperation of multiple sets of bolts and nuts for fastening. The connection method is not quick and convenient enough, which reduces the installation efficiency. For this reason, we propose a tunnel arch frame that is easy to install. Utility Model Content

[0004] The utility model aims to provide a tunnel arch frame which is easy to install, so as to solve the problems raised by the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tunnel arch frame that is easy to install, comprising a first frame body, a group of second frames are hingedly connected at both ends of the first frame body, the two groups of second frames are mirror-imaged, and can be locked with the first frame body through a limit assembly, the first frame body and the two groups of second frames form a complete arch frame, both sides of the arch frame are provided with card slots, the inner cavity of the card slots is provided with a shielding member, and is locked by a locking member.

[0006] Preferably, a group of first connecting blocks are respectively installed at both ends of the first frame body, and the first connecting blocks are rotatably connected to a second connecting block installed at one end of the second frame body through an axle pin.

[0007] Preferably, the limiting assembly includes a bolt and a limiting member, the second connecting block is threadedly connected to the bolt, the bolt is rotationally connected to the limiting member, and the limiting member can lock the first frame and the second frame.

[0008] Preferably, the limiting member includes a first limiting seat and a second limiting seat, the two ends of the first limiting seat can be respectively inserted into the first frame and the second frame, the outer wall of the first limiting seat is integrally formed with the second limiting seat, and the second limiting seat is rotatably connected to the bolt.

[0009] Preferably, the shielding member is provided with one group corresponding to the first frame and two groups of the second frame, and is locked by the locking member.

[0010] Preferably, the shielding member includes a first baffle and a second baffle, a group of the second baffles are welded to both sides of the first baffle, and the second baffles can be inserted into the slot.

[0011] Preferably, the first baffle is specifically an arc-shaped mesh structure.

[0012] Preferably, the locking member includes a sliding rod and a spring, the arch frame is slidably connected to multiple groups of the sliding rods, one end of the sliding rod can be inserted into the second baffle, the spring is sleeved on the outside of the other end of the sliding rod, and one end of the spring is welded to the first frame.

[0013] Preferably, bases are welded at both ends of the bottom of the arch frame, and four groups of first positioning holes are formed through the base.

[0014] Preferably, a second positioning hole is formed through one side of the two groups of bases that are opposite to each other.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. Since the first frame and the second frame are hinged, the utility model can form an arch frame that can be folded, which is convenient for storage and installation. When in use, it is only necessary to rotate the second frame to unfold it to complete the deployment of the arch frame, and then insert the shielding member into the slot and then use the locking member to lock it. Compared with the prior art, it can be quickly installed and fixed, thereby improving the installation efficiency of the tunnel arch frame.

[0017] 2. The first connecting block and the second connecting block of the utility model are staggered and rotatably connected by an axle pin, so that the first frame and the second frame form a movable connection. When the second frame is rotated outward to the maximum extent, the bolt is rotated to penetrate into the second connecting block threadedly connected thereto, so that the limit member can be driven to lock the first frame and the second frame. The bolt is rotatably connected to the limit member, which will not drive the limit member to rotate and will not affect its locking effect. When the bolt penetrates into the second connecting seat, it will drive the second limit seat to move, so that it drives the first limit seat to be inserted into the first frame and the second frame respectively, so that the two can no longer rotate, thereby improving their stability after deployment.

[0018] 3. The locking member of the utility model has the same structure and can lock the shielding member. The first baffle of the arc-shaped mesh structure can play a certain protective role. The shielding member is provided with a group corresponding to the first frame and the two groups of second frames, and can be disassembled and decomposed for convenient transportation. When installing the second baffle, pull the slide bar to drive the spring to stretch, and then insert the second baffle into the slot, release the slide bar, the spring resets, pull the slide bar to insert the second baffle, and lock it to prevent it from separating from the arch frame. The installation is quick and convenient. The first positioning hole can be used in conjunction with the expansion bolts in the prior art to complete the installation and fixation of the base. The second positioning hole can be used in conjunction with the cable ties or binding straps in the prior art to limit the arch frame when it is folded to prevent it from loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an exploded view of the overall structure and the limiting parts of the utility model;

[0020] Figure 2 It is an enlarged view of structure A of the utility model;

[0021] Figure 3 It is a schematic diagram of the folding of the arch frame of the utility model;

[0022] Figure 4 It is an enlarged view of structure B of the utility model;

[0023] Figure 5 It is a schematic diagram of the expansion of the arch frame of the utility model.

[0024] In the figure: 1, first frame, 2, second frame, 3, slot, 4, shielding member, 5, first connecting block, 6, second connecting block, 7, bolt, 8, limiting member, 9, first limiting seat, 10, second limiting seat, 11, first baffle, 12, second baffle, 13, sliding rod, 14, spring, 15, base, 16, first positioning hole, 17, second positioning hole. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Embodiment 1

[0027] Please refer to Figure 1-5As shown, the utility model provides a tunnel arch frame which is easy to install, including a first frame body 1, a group of second frames 2 are hinged at both ends of the first frame body 1, the two groups of second frames 2 are arranged in a mirror image, and can be locked with the first frame body 1 through a limit assembly, the first frame body 1 and the two groups of second frames 2 form a complete arch frame, both sides of the arch frame are provided with card slots 3, the inner cavity of the card slot 3 is provided with a shielding member 4, and is locked by a locking member.

[0028] In this embodiment, since the first frame 1 and the second frame 2 are hinged, the arch frame formed by them can be folded for easy storage and installation. When in use, it is only necessary to rotate the second frame 2 to unfold it to complete the deployment of the arch frame, and then insert the shielding member 4 into the slot 3, and then use the locking member to lock it. Compared with the prior art, it can be quickly installed and fixed, thereby improving the installation efficiency of the tunnel arch frame.

[0029] Please refer to Figure 1-5 As shown, a group of first connecting blocks 5 are installed at each end of the first frame 1, and the first connecting block 5 is rotatably connected to the second connecting block 6 installed at one end of the second frame 2 through an axle pin. The limiting assembly includes a bolt 7 and a limiting member 8. The second connecting block 6 is threadedly connected to the bolt 7, and the bolt 7 is rotatably connected to the limiting member 8. The limiting member 8 can lock the first frame 1 and the second frame 2. The limiting member 8 includes a first limiting seat 9 and a second limiting seat 10. The two ends of the first limiting seat 9 can be inserted into the first frame 1 and the second frame 2 respectively. The outer wall of the first limiting seat 9 is integrally formed with the second limiting seat 10, and the second limiting seat 10 is rotatably connected to the bolt 7.

[0030] In this embodiment, the first connecting block 5 and the second connecting block 6 are staggered and rotatably connected by an axle pin, so that the first frame 1 and the second frame 2 form a movable connection. When the second frame 2 is rotated outward to the maximum extent, by rotating the bolt 7 to make it penetrate into the second connecting block 6 threadedly connected thereto, the limiting member 8 can be driven to lock the first frame 1 and the second frame 2. The bolt 7 is rotatably connected to the limiting member 8 and will not drive the limiting member 8 to rotate, and will not affect its locking effect. When the bolt 7 penetrates into the second connecting seat 6, it will drive the second limiting seat 10 to move, so that it drives the first limiting seat 9 to be inserted into the first frame 1 and the second frame 2 respectively, so that the two can no longer rotate, thereby improving their stability after deployment.

[0031] Please refer to Figure 1-5As shown, the shielding member 4 is provided with a group corresponding to the first frame 1 and the two groups of second frames 2, and is locked by a locking member. The shielding member 4 includes a first baffle 11 and a second baffle 12. A group of second baffles 12 are welded on both sides of the first baffle 11, and the second baffle 12 can be inserted into the slot 3. The first baffle 11 is specifically an arc-shaped mesh structure. The locking member includes a slide bar 13 and a spring 14. The arch frame is slidably connected to multiple groups of slide bars 13. One end of the slide bar 13 can be inserted into the second baffle 12. The other end of the slide bar 13 is sleeved on the outside. The spring 14 is welded to the first frame 1. Both ends of the bottom of the arch frame are welded with a base 15. The base 15 is provided with four groups of first positioning holes 16, and the opposite side of the two groups of bases 15 is provided with a second positioning hole 17.

[0032] In this embodiment, the locking member has the same structure and can lock the shielding member 4. The first baffle 11 of the arc-shaped mesh structure can play a certain protective role. The shielding member 4 is provided with a group corresponding to the first frame 1 and the two groups of second frames 2, and can be disassembled and decomposed for convenient transportation. When installing the second baffle 12, pull the slide bar 13 to drive the spring 14 to stretch, and then insert the second baffle 12 into the slot 3, release the slide bar 13, the spring 14 resets, pull the slide bar 13 to insert the second baffle 12, lock it to prevent it from separating from the arch frame, and the installation is completed. The installation is quick and convenient. The first positioning hole 16 opened can be used in conjunction with the expansion bolts in the prior art to complete the installation and fixation of the base 15. The second positioning hole 17 opened can be used in conjunction with the cable ties or binding straps in the prior art to limit the position of the arch frame when it is folded to prevent it from loosening.

[0033] Working principle: First, when the second frame 2 is rotated outward to the maximum extent, by rotating the bolt 7, it penetrates into the second connecting block 6 threadedly connected thereto, and the limiting member 8 can be driven to lock the first frame 1 and the second frame 2. The bolt 7 is rotatably connected to the limiting member 8, which will not drive the limiting member 8 to rotate and will not affect its locking effect. When the bolt 7 penetrates into the second connecting seat 6, it will drive the second limiting seat 10 to move, so that it drives the first limiting seat 9 to be inserted into the first frame 1 and the second frame 2 respectively, so that the two can no longer rotate, thereby improving their stability after deployment. The first positioning hole 16 opened can be used in conjunction with the expansion bolt in the prior art to complete the installation and fixation of the base 15. When installing the second baffle plate 12, pull the sliding rod 13 to drive the spring 14 to stretch. Then, after the second baffle plate 12 is inserted into the card slot 3, release the sliding rod 13, the spring 14 resets, and pulls the sliding rod 13 to insert the second baffle plate 12 to lock it to prevent it from detaching from the arch frame, and the installation of the shielding member 4 can be completed.

[0034] The contents not described in detail in this specification belong to the prior art known to professionals in this field.

[0035] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A tunnel arch frame that is easy to install, comprising a first frame body (1), characterized in that: A group of second frames (2) are hingedly connected at each end of the first frame (1); the two groups of second frames (2) are arranged in a mirror image and can be locked with the first frame (1) through a limit assembly; the first frame (1) and the two groups of second frames (2) form a complete arch frame; both sides of the arch frame are provided with a card slot (3); the inner cavity of the card slot (3) is provided with a shielding member (4) and is locked by a locking member.

2. A tunnel arch frame that is easy to install according to claim 1, characterized in that: A set of first connection blocks (5) are respectively installed at both ends of the first frame body (1), and the first connection blocks (5) are rotatably connected to a second connection block (6) installed at one end of the second frame body (2) via an axle pin.

3. The tunnel arch frame that is easy to install according to claim 2 is characterized in that: The limiting assembly comprises a bolt (7) and a limiting member (8); the second connecting block (6) is threadedly connected to the bolt (7); the bolt (7) is rotatably connected to the limiting member (8); and the limiting member (8) can lock the first frame (1) and the second frame (2).

4. The tunnel arch frame that is easy to install according to claim 3 is characterized in that: The limiting member (8) comprises a first limiting seat (9) and a second limiting seat (10); the two ends of the first limiting seat (9) can be respectively inserted into the first frame (1) and the second frame (2); the outer wall of the first limiting seat (9) is integrally formed with the second limiting seat (10); and the second limiting seat (10) is rotatably connected to the bolt (7).

5. The tunnel arch frame that is easy to install according to claim 1 is characterized in that: The shielding member (4) is provided with one group corresponding to the first frame (1) and two groups of the second frame (2), and is locked by using the locking member.

6. The tunnel arch frame that is easy to install according to claim 5, characterized in that: The shielding member (4) comprises a first baffle (11) and a second baffle (12); a group of the second baffles (12) are welded to each of the two sides of the first baffle (11); and the second baffles (12) can be inserted into the card slot (3).

7. The tunnel arch frame that is easy to install according to claim 6 is characterized by: The first baffle (11) is specifically an arc-shaped mesh structure.

8. The tunnel arch frame that is easy to install according to claim 6 is characterized by: The locking member comprises a sliding rod (13) and a spring (14); the arch frame is slidably connected to a plurality of groups of the sliding rods (13); one end of the sliding rod (13) can be inserted into the second baffle (12); the spring (14) is sleeved on the outside of the other end of the sliding rod (13); and one end of the spring (14) is welded to the first frame (1).

9. The tunnel arch frame that is easy to install according to claim 1 is characterized by: Bases (15) are welded at both ends of the bottom of the arch frame, and the base (15) is provided with four groups of first positioning holes (16) extending therethrough.

10. The tunnel arch frame that is easy to install according to claim 9, characterized in that: A second positioning hole (17) is formed through one side of the two groups of bases (15) facing each other.

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