Safety protection tool for tunnel construction

Abstract

The utility model discloses a tunnel construction safety protection tool, and belongs to the technical field of tunnel construction equipment, the tunnel construction safety protection tool comprises a U-shaped support frame, the upper end of the U-shaped support frame is provided with two telescopic rods, the telescopic ends of the two telescopic rods are fixedly connected with a mounting seat together, the upper end of the mounting seat is provided with a positioning groove, and the positioning groove is fixedly connected with the U-shaped support frame. Rectangular inner grooves are horizontally formed in the inner walls of the left side and the right side of the positioning groove correspondingly, and a supporting top is arranged at the upper end of the mounting base. And the limiting mechanism comprises limiting blocks which are respectively arranged in the two rectangular inner grooves. In order to solve the use problem, the equipment is provided with a limiting mechanism, the supporting top part can be conveniently assembled and disassembled by controlling two limiting blocks to limit a positioning block and cooperating with a positioning groove and two concentric-square-shaped electromagnets, the maintenance complexity is reduced, and meanwhile, dust can be prevented from interfering with normal work of two telescopic rods by arranging a folding dust-proof cover.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tunnel construction equipment technical field especially relates to a tunnel construction safety protection frock. BACKGROUND

[0002] Most people will use public transport and subway in urban traffic, and the subway needs to dig a tunnel before construction, and after the tunnel is completed, a safety protection frock is usually arranged in the tunnel to improve the safety of subsequent tunnel construction.

[0003] The existing safety protection frock is easy to be damaged when the upper end of the support top is in contact with the inner top of the tunnel for a long time, and the support top of most safety protection frocks is fixed by bolts and nuts, so that the subsequent disassembly and maintenance process is more complicated, increasing the workload of maintenance personnel, therefore, to solve this problem, a tunnel construction safety protection frock is designed. UTILITY MODEL CONTENT

[0004] The utility model discloses a tunnel construction safety protection frock, which sets a limiting mechanism to conveniently disassemble and assemble the support top by controlling the limiting of the two limiting blocks on the positioning block, cooperating with the positioning groove and the two return electromagnets, reduces the complexity of maintenance, and avoids dust interference with the normal work of the two telescopic rods by setting the folding dust cover.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A tunnel construction safety protection frock, comprising a U-shaped support frame, two telescopic rods are installed at the upper end of the U-shaped support frame, the telescopic ends of the two telescopic rods are fixedly connected with a mounting seat, a positioning groove is formed in the upper end of the mounting seat, rectangular inner grooves are horizontally formed in the left and right inner walls of the positioning groove, and a support top is arranged at the upper end of the mounting seat; a limiting mechanism, the limiting mechanism comprises limiting blocks arranged in the two rectangular inner grooves respectively, first connecting blocks are fixedly connected to the opposite sides of the two limiting blocks, second connecting blocks are fixedly connected to the inner walls of the corresponding rectangular inner grooves through the opposite sides of the two first connecting blocks, return electromagnets are arranged on the opposite sides of the two second connecting blocks, and the opposite sides of the two return electromagnets are in contact with the left and right sides of the mounting seat.

[0007] Preferably, U-shaped handles are fixedly connected to the opposite sides of the two second connecting blocks, and the two limiting blocks are slidingly connected with the inner walls of the corresponding rectangular inner grooves.

[0008] Preferably, the lower end of the support top is fixedly connected with a positioning block, the left and right sides of the positioning block are horizontally provided with limiting grooves, and the two limiting grooves are matched with corresponding limiting blocks.

[0009] Preferably, the upper end of the U-shaped support frame is fixedly connected with a first back-shaped mounting frame, the lower end of the mounting seat is fixedly connected with a second back-shaped mounting frame, and a folding dust cover is mounted between the first back-shaped mounting frame and the second back-shaped mounting frame.

[0010] Preferably, the left and right sides of the U-shaped support frame are fixedly connected with fixed plates, and the two fixed plates are threadedly connected with threaded rods.

[0011] Preferably, the lower ends of the two threaded rods are in a sharp cone shape, and the upper ends of the two threaded rods are fixedly connected with circular handles.

[0012] Preferably, the lower end of the U-shaped support frame is symmetrically provided with four universal wheels, and the two telescopic rods are hydraulic telescopic rods.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] The limiting mechanism is arranged, two U-shaped handles are pulled, the limiting of the positioning block by the two limiting blocks can be controlled, the positioning groove and the two back-shaped electromagnets are matched, the support top part can be conveniently and quickly disassembled and assembled, the complexity of subsequent maintenance operation of the staff is effectively reduced, the folding dust cover is arranged between the mounting seat and the U-shaped support frame, the normal work of the two telescopic rods can be effectively avoided from being affected by dust in the tunnel, and the service life of the whole safety protection tool is guaranteed. DRAWINGS

[0015] Figure 1 A structural schematic view of a tunnel construction safety protection tool is provided in the utility model;

[0016] Figure 2 A Figure 1 enlarged view of A;

[0017] Figure 3 A Figure 1 partial structural schematic view after the folding dust cover is removed;

[0018] Figure 4 A structural schematic view of a support top;

[0019] Figure 5 A structural schematic view of a mounting seat;

[0020] Figure 6 A Figure 5 partial structural sectional view.

[0021] In the figure: 1U-shaped support frame, 2 telescopic rod, 3 mounting seat, 4 positioning groove, 5 rectangular inner groove, 6 support top, 7 limiting block, 8 first connecting block, 9 second connecting block, 10 return-shaped electromagnet, 11 U-shaped handle, 12 positioning block, 13 limiting groove, 14 first return-shaped mounting frame, 15 second return-shaped mounting frame, 16 folding dust cover, 17 fixed plate, 18 threaded rod, 19 round handle, 20 universal wheel. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0023] Referring to Figures 1-6 A tunnel construction safety protection tool, comprising a U-shaped support frame 1, two telescopic rods 2 are installed at the upper end of the U-shaped support frame 1, both of the telescopic rods 2 are hydraulic telescopic rods, a mounting seat 3 is fixedly connected to the telescopic ends of both of the telescopic rods 2, a positioning groove 4 is formed at the upper end of the mounting seat 3, rectangular inner grooves 5 are horizontally formed on the inner walls of the left and right sides of the positioning groove 4, a support top 6 is arranged at the upper end of the mounting seat 3, a positioning block 12 is fixedly connected to the lower end of the support top 6, the positioning block 12 can be inserted into the positioning groove 4 to realize the pre-positioning of the part of the support top 6 before the limiting, limiting grooves 13 are horizontally formed on the left and right sides of the positioning block 12, both of the limiting grooves 13 are matched with corresponding limiting blocks 7, and the limiting blocks 7 are inserted into the limiting grooves 13 to realize the limiting installation of the positioning block 12 and the support top 6;

[0024] The limiting mechanism comprises limiting blocks 7 arranged in both of the rectangular inner grooves 5, both of the limiting blocks 7 are slidably connected with the inner walls of the corresponding rectangular inner grooves 5, first connecting blocks 8 are fixedly connected to the opposite sides of both of the limiting blocks 7, the opposite sides of both of the first connecting blocks 8 penetrate through the inner walls of the corresponding rectangular inner grooves 5 and are fixedly connected with second connecting blocks 9, return-shaped electromagnets 10 are arranged on the opposite sides of both of the second connecting blocks 9, both of the return-shaped electromagnets 10 are return-shaped electromagnets, the opposite sides of both of the return-shaped electromagnets 10 are respectively attached to the left and right sides of the mounting seat 3, the left and right sides of the mounting seat 3 are made of iron, the left and right sides of the mounting seat 3 are magnetically attracted to both of the return-shaped electromagnets 10 when the return-shaped electromagnets 10 are turned on, so that the stable limiting of the positioning block 12 by both of the limiting blocks 7 is ensured, and U-shaped handles 11 are fixedly connected to the opposite sides of both of the second connecting blocks 9;

[0025] The upper end of the U-shaped support frame 1 is fixedly connected with a first back-shaped mounting frame 14, the lower end of the mounting seat 3 is fixedly connected with a second back-shaped mounting frame 15, a folding dust isolation cover 16 is mounted between the first back-shaped mounting frame 14 and the second back-shaped mounting frame 15, the folding dust isolation cover 16 is made of rubber skin material, can adapt to the extension and contraction of the two telescopic rods 2 to change the height of the folding dust isolation cover 16, the left side and the right side of the U-shaped support frame 1 are fixedly connected with fixed plates 17, the two fixed plates 17 are threadedly connected with threaded rods 18, the lower ends of the two threaded rods 18 are in the shape of a sharp cone, the upper ends of the two threaded rods 18 are fixedly connected with circular handles 19, and the lower end of the U-shaped support frame 1 is symmetrically provided with four universal wheels 20.

[0026] In use, the whole device is pushed to a specified position through the four universal wheels 20, then the two circular handles 19 are rotated in sequence, the corresponding threaded rods 18 are driven to move downwards, until the sharp cone portions at the lower ends of the two threaded rods 18 are completely inserted into the ground, so that the movement and fixing of the whole device are completed, then the two telescopic rods 2 drive the mounting seat 3 to move upwards, the support top 6 is driven to move upwards, until the upper end of the support top 6 supports the inner top of the tunnel, so that the support of the inner top of the tunnel by the support top 6 can achieve the safety protection effect.

[0027] When the support top 6 needs to be replaced and maintained subsequently, the maintenance personnel can close the power supply of the two back-shaped electromagnets 10, then pull out the two U-shaped handles 11 in sequence, drive the two second connecting blocks 9, the two first connecting blocks 8 and the two limiting blocks 7 to move in opposite directions synchronously, until the two limiting blocks 7 are separated from the corresponding limiting grooves 13, so that the limiting of the positioning block 12 and the support top 6 is cancelled, at this time, the maintenance personnel can move the support top 6 upwards and disassemble it, after disassembly, the positioning block 12 at the lower end of the new support top 6 is inserted into the positioning groove 4 to realize the positioning before installation, then the two U-shaped handles 11 are pushed inwards, so that the two limiting blocks 7 move relatively and are inserted into the corresponding limiting grooves 13, finally, the two back-shaped electromagnets 10 are controlled to be magnetically attracted to the left and right sides of the mounting seat 3, so that the stable limiting of the two limiting blocks 7 is ensured, the whole mounting and dismounting process is convenient and fast, and the maintenance workload of the maintenance personnel is reduced.

[0028] It is worth mentioning that the folding dust isolation cover 16 is arranged between the mounting seat 3 and the U-shaped support frame 1, can isolate the dust in the tunnel, so that the normal work of the two telescopic rods 2 is not affected, and the folding dust isolation cover 16 can adapt to the extension and contraction of the two telescopic rods 2 to change the height of the folding dust isolation cover 16.

[0029] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A tunnel construction safety protection tool, characterized in that, The utility model relates to a kind of U-shaped support frame (1), the upper end of the U-shaped support frame (1) is equipped with two telescopic rods (2), the telescopic end of two telescopic rods (2) is fixedly connected with mounting seat (3) in common, the upper end of mounting seat (3) is equipped with positioning slot (4), the left and right two side inner walls of positioning slot (4) are horizontally equipped with rectangular inner slot (5), and the upper end of mounting seat (3) is provided with support top (6). Limiting mechanism, the limiting mechanism includes limiting block (7) being set in two rectangular inner slots (5) respectively, the opposite sides of two limiting blocks (7) are fixedly connected with first connecting block (8), the opposite sides of two first connecting blocks (8) are respectively fixedly connected with second connecting block (9) penetrating the inner wall of corresponding rectangular inner slot (5), and the opposite sides of two second connecting blocks (9) are provided with back-shaped electromagnet (10), and the opposite sides of two back-shaped electromagnets (10) are respectively attached with the left and right sides of mounting seat (3). The opposite sides of two second connecting blocks (9) are fixedly connected with U-shaped handle (11), and two limiting blocks (7) are slidably connected with the inner wall of corresponding rectangular inner slot (5).

2. The safety protection tool for tunnel construction according to claim 1, characterized in that, The lower end of support top (6) is fixedly connected with positioning block (12), and the left and right sides of positioning block (12) are horizontally equipped with limiting slot (13), and two limiting slots (13) are matched with corresponding limiting block (7).

3. The safety protection tool for tunnel construction according to claim 1, characterized in that, The upper end of the U-shaped support frame (1) is fixedly connected with first back-shaped mounting frame (14), the lower end of the mounting seat (3) is fixedly connected with second back-shaped mounting frame (15), and the first back-shaped mounting frame (14) and second back-shaped mounting frame (15) are installed with folding dust cover (16).

4. The safety protection tool for tunnel construction according to claim 1, characterized in that, The left and right sides of the U-shaped support frame (1) are fixedly connected with fixed plate (17), and the upper end of two fixed plates (17) is threadedly connected with threaded rod (18).

5. The safety protection tool for tunnel construction according to claim 1, characterized in that, The lower end of two threaded rods (18) is sharp cone, and the upper end of two threaded rods (18) is fixedly connected with circular handle (19).

6. A tunnel construction safety protection tool according to claim 5, characterized in that, The lower end of the U-shaped support frame (1) is symmetrically provided with four universal wheels (20), and two telescopic rods (2) are hydraulic telescopic rods.

7. The safety shield for tunnel construction according to claim 1, wherein ​

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