Protection device for tunnel construction

Abstract

The utility model relates to the technical field of tunnel construction, and provides a protective device for tunnel construction, which comprises first connecting vertical plates (2) detachably connected to a trolley frame body (1) and second connecting vertical plates (4) detachably connected to a working platform (3), and the free ends of the two first connecting vertical plates (2) and the free ends of the two second connecting vertical plates (4) are fixedly connected with sliding cross rods (5). A sliding block (6) is arranged on the sliding cross rod (5) in a sliding mode, an opening (61) is formed in the sliding block (6), an alarm mechanism (8) is arranged between the sliding block (6) and the safety rope (7), and the free end of the safety rope (7) is connected with a safety belt (9). According to the anti-falling device, a worker can be protected, meanwhile, transverse movement of the worker is not limited, and the alarm mechanism is arranged and used for reminding the worker to pay attention to falling prevention.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, and more specifically, particularly relates to a protective device for tunnel construction. Background Art

[0002] During the tunnel construction process, the waterproof board hanging trolley is mainly used for laying waterproof boards and geotextiles in tunnels. The waterproof board hanging trolley mainly includes a walking system, a lifting system, a hydraulic system, a trolley frame, and a steel bar positioning system. The advantage of the hanging trolley is that it solves the problem of large-area wrinkles that are prone to occur in the laying of waterproof boards in the past, ensures the convenience of the trolley's movement, greatly reduces the labor intensity of workers, and improves construction efficiency.

[0003] However, in the actual construction process, since the workers are required to operate on the edge of the work platform, where guardrails cannot be placed, a safety rope needs to be hung behind the workers, and the other end of the safety rope is usually fixed to a trolley frame (a frame composed of beams and columns). However, this restricts the lateral movement of the workers; and when the workers approach the edge for construction, there is a lack of alarm measures to remind the workers that they are already at the edge of the work platform and need to pay attention to safety. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings, the utility model aims to provide a protective device for tunnel construction, which can protect workers without restricting their lateral movement and is provided with an alarm mechanism to remind workers to prevent falling.

[0005] A protection device for tunnel construction comprises a first connecting vertical plate detachably connected to a trolley frame and a second connecting vertical plate detachably connected to a working platform, the free ends of the two first connecting vertical plates and the free ends of the two second connecting vertical plates are fixedly connected to a sliding cross bar, a slider slides on the sliding cross bar, an opening is formed on the slider, an alarm mechanism is arranged between the slider and a safety rope, and a safety belt is connected to the free end of the safety rope.

[0006] Further, the opening can pass through the first connecting upright plate and the second connecting upright plate.

[0007] Furthermore, the alarm mechanism includes an installation box fixedly connected to the slider, a moving block slides inside the installation box, one end of the safety rope passes through the installation box and is fixedly connected to the moving block, and a first spring is connected between the moving block and the inner wall of the installation box.

[0008] Furthermore, the alarm mechanism also includes a loudspeaker installed on the slider and a contact switch arranged in the installation box, and a power supply is arranged on one side of the slider.

[0009] Furthermore, the contact switch includes a first metal block and a second metal block.

[0010] Furthermore, the first metal block is fixed to the inner wall of the installation box.

[0011] Furthermore, a first sliding groove is provided on the moving block on one side close to the first metal block, a mounting block slides in the first sliding groove, a second spring is connected between the mounting block and the first sliding groove, and the second metal block is fixed to the mounting block.

[0012] Furthermore, the positive electrode of the power supply is electrically connected to the first metal block, the second metal block is electrically connected to the positive electrode of the loudspeaker, and the negative electrode of the loudspeaker is electrically connected to the negative electrode of the power supply.

[0013] Furthermore, second sliding grooves are symmetrically provided on both sides of the moving block, a clamping block slides in the second sliding groove, and a third spring is connected between the clamping block and the inner wall of the second sliding groove.

[0014] Furthermore, bayonet ports communicating with the interior are symmetrically provided on both sides of the installation box.

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

[0016] ① In the utility model, a slider is slid on the sliding crossbar, and an opening is provided on the slider that can just pass the first connecting vertical plate and the second connecting vertical plate, so that the slider can slide on the sliding crossbar without being blocked by the first connecting vertical plate or the second connecting vertical plate, an alarm mechanism is arranged between the slider and the safety rope, and a safety belt is connected to the free end of the safety rope. The safety belt is worn by the staff, and the safety rope, the alarm mechanism and the slider are connected, which can protect the staff without restricting the lateral movement of the staff.

[0017] ② In the utility model, when the worker ignores the pulling force of the first spring and continues to move outside the edge of the working platform, the movable block moves so that the second metal block approaches and contacts the first metal block, so that a circuit is formed between the loudspeaker, the contact switch and the power supply, and the loudspeaker emits an alarm sound to warn the worker that he is in a dangerous position; after the worker retreats, the pulling force of the first spring to restore its deformation pulls the movable block to move the second metal block away from the first metal block, and the loudspeaker stops the alarm. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1It is a schematic diagram of the overall structure of a protection device for tunnel construction;

[0020] Figure 2 It is a partial schematic diagram of a protection device for tunnel construction;

[0021] Figure 3 It is a schematic diagram of the protection mechanism;

[0022] Figure 4 is a cross-sectional view of the alarm mechanism;

[0023] Figure 5 It is a schematic diagram of the protection mechanism.

[0024] In the figure: 1. trolley frame; 2. first connecting vertical plate; 3. working platform; 4. second connecting vertical plate; 5. sliding cross bar; 6. slider; 61. opening; 7. safety rope; 8. alarm mechanism; 81. installation box; 811. bayonet; 82. moving block; 821. first slide groove; 822. second slide groove; 83. first spring; 84. loudspeaker; 85. contact switch; 851. first metal block; 852. second metal block; 86. power supply; 87. installation block; 88. second spring; 89. clamping block; 810. third spring; 9. safety belt. 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. Specific embodiment:

[0027] like Figure 1-5As shown, the waterproof cloth hanging trolley includes a trolley frame 1 and a working platform 3, a protective device for tunnel construction, including a first connecting vertical plate 2 detachably connected to the trolley frame 1 and a second connecting vertical plate 4 detachably connected to the working platform 3, at least two first connecting vertical plates 2 and second connecting vertical plates 4 are provided, the free ends of the two first connecting vertical plates 2 are fixedly connected to sliding cross bars 5, and the free ends of the two second connecting vertical plates 4 are fixedly connected to sliding cross bars 5; a slider 6 slides on the sliding cross bar 5, and an opening 61 is opened on the slider 6 that can just pass through the first connecting vertical plate 2 and the second connecting vertical plate 4, so that the slider 6 is not blocked by the first connecting vertical plate 2 or the second connecting vertical plate 4 and slides on the sliding cross bar 5, an alarm mechanism 8 is arranged between the slider 6 and the safety rope 7, a safety belt 9 is connected to the free end of the safety rope 7, and the safety belt 9 is used for workers to wear, the safety rope 7, the alarm mechanism 8 and the slider 6 are connected, which can protect the workers without restricting the lateral movement of the workers, and the alarm mechanism 8 is used to remind the workers to pay attention to anti-falling at the edge position of the working platform 3.

[0028] like Figure 1-5 As shown, the alarm mechanism 8 includes an installation box 81 fixedly connected to the slider 6, a moving block 82 slides in the installation box 81, the end of the safety rope 7 away from the safety belt 9 passes through the installation box 81 and is fixedly connected to the moving block 82, and a first spring 83 is connected between the moving block 82 and the inner wall of the installation box 81. When the worker wears the safety belt 9 and moves to the edge position of the working platform 3, continuing to move outside the working platform 3 will cause the safety rope 7 to pull the moving block 82 to move and stretch the first spring 83. At this time, due to the tension of the first spring 83 to restore the deformation, the worker feels the tension transmitted by the safety rope 7 and the safety belt 9, which plays a certain warning role for the worker and reminds the worker to pay attention to safety.

[0029] like Figure 1-5As shown, the alarm mechanism 8 also includes a loudspeaker 84 installed on the slider 6 and a contact switch 85 arranged in the installation box 81, and a power supply 86 is arranged on one side of the slider 6; the contact switch 85 includes a first metal block 851 and a second metal block 852, the first metal block 851 is fixedly connected to the inner wall of the installation box 81, a first slide groove 821 is opened on the side of the moving block 82 close to the first metal block 851, a mounting block 87 slides in the first slide groove 821, a second spring 88 is connected between the mounting block 87 and the first slide groove 821, the second metal block 852 is fixedly connected to the end of the mounting block 87 away from the second spring 88, the positive pole of the power supply 86 is electrically connected to the first metal block 851 through a wire, the second metal block 852 is electrically connected to the positive pole of the loudspeaker 84 through a wire, and the negative pole of the loudspeaker 84 is electrically connected to the negative pole of the power supply 86 through a wire. When the worker ignores the pulling force of the first spring 83 and continues to move outside the edge of the working platform, the movable block 82 moves so that the second metal block 852 approaches and contacts the first metal block 851, so that a circuit is formed among the loudspeaker 84, the contact switch 85 and the power supply 86, and the loudspeaker 84 emits an alarm sound to warn the worker that he is in a dangerous position; after the worker retreats, the pulling force of the first spring 83 to restore its deformation pulls the movable block 82 to move the second metal block 852 away from the first metal block 851, and the loudspeaker 84 stops the alarm.

[0030] like Figure 1-5 As shown, second slide grooves 822 are symmetrically provided on both sides of the movable block 82, a clamping block 89 slides in the second slide groove 822, a third spring 810 is connected between the clamping block 89 and the inner wall of the second slide groove 822, when the clamping block 89 is completely located in the second slide groove 822, the third spring 810 is in a compressed state, and bayonet holes 811 connected to the interior are symmetrically provided on both sides of the installation box 81, and the bayonet holes 811 are adapted to the clamping block 89. When the worker continues to move toward the edge of the working platform 3 so that the installation block 87 completely slides into the first slide groove 821, the block 89 moves with the moving block 82 to the slot 811 and bounces into the slot 811. After the block 89 is bounced in, at least one-half of it is still in the second slide groove 822. At this time, the moving block 82 is stuck and cannot move further, so that the worker is restricted from moving outside the working platform 3 to prevent the worker from falling. By pushing the block 89 back into the second slide groove 822, the moving block 82 is restored to its original position under the pulling force of the first spring 83, so that the device can be reused.

[0031] like Figure 1-5 As shown, the first connecting plate 2 is connected to the trolley frame 1 by bolts, and holes are punched in advance on the trolley frame 1; the second connecting plate 4 is connected to the working platform 3 by bolts, and holes are punched in advance on the working platform 3.

[0032] The working principle of a protective device for tunnel construction in the present embodiment is: when in use, since the opening 61 is provided on the slider 6, the slider 6 can slide on the sliding cross bar 5 without being restricted by the first connecting vertical plate 2 or the second connecting vertical plate 4, so that the staff can move horizontally without restriction during operation; when the staff moves close to the edge of the working platform 3, the moving block 82 is pulled to move by the safety rope 7. First, due to the tension of the first spring 83 to restore the deformation, the staff feels the tension transmitted by the safety rope 7 and the safety belt 9, which has a certain warning effect on the staff, reminding the staff to pay attention to safety; then the contact switch 85 is combined, so that the loudspeaker 84 issues an alarm, which has a warning effect on the staff.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A protection device for tunnel construction, characterized in that: The invention comprises a first connecting vertical plate (2) detachably connected to a trolley frame (1) and a second connecting vertical plate (4) detachably connected to a working platform (3); the free ends of the two first connecting vertical plates (2) and the free ends of the two second connecting vertical plates (4) are fixedly connected to a sliding cross bar (5); a slider (6) slides on the sliding cross bar (5); an opening (61) is provided on the slider (6); an alarm mechanism (8) is provided between the slider (6) and a safety rope (7); and a safety belt (9) is connected to the free end of the safety rope (7).

2. A tunnel construction protection device according to claim 1, characterized in that: The opening (61) is capable of passing through the first connecting upright plate (2) and the second connecting upright plate (4).

3. A tunnel construction protection device according to claim 1, characterized in that: The alarm mechanism (8) comprises an installation box (81) fixedly connected to the slider (6), a moving block (82) slidingly arranged in the installation box (81), one end of the safety rope (7) passing through the installation box (81) and fixedly connected to the moving block (82), and a first spring (83) connected between the moving block (82) and the inner wall of the installation box (81).

4. A tunnel construction protection device according to claim 3, characterized in that: The alarm mechanism (8) further comprises a loudspeaker (84) mounted on the slider (6) and a contact switch (85) arranged in the installation box (81); a power source (86) is arranged on one side of the slider (6).

5. A tunnel construction protection device according to claim 4, characterized in that: The contact switch (85) comprises a first metal block (851) and a second metal block (852).

6. A tunnel construction protection device according to claim 5, characterized in that: The first metal block (851) is fixedly connected to the inner wall of the installation box (81).

7. A protection device for tunnel construction according to claim 6, characterized in that: A first sliding groove (821) is provided on the movable block (82) on a side close to the first metal block (851), a mounting block (87) slides in the first sliding groove (821), a second spring (88) is connected between the mounting block (87) and the first sliding groove (821), and the second metal block (852) is fixed to the mounting block (87).

8. A tunnel construction protection device according to claim 7, characterized in that: The positive electrode of the power supply (86) is electrically connected to the first metal block (851), the second metal block (852) is electrically connected to the positive electrode of the loudspeaker (84), and the negative electrode of the loudspeaker (84) is electrically connected to the negative electrode of the power supply (86).

9. A tunnel construction protection device according to claim 3, characterized in that: Second sliding grooves (822) are symmetrically provided on both sides of the moving block (82), a clamping block (89) slides in the second sliding groove (822), and a third spring (810) is connected between the clamping block (89) and the inner wall of the second sliding groove (822).

10. A tunnel construction protection device according to claim 9, characterized in that: The installation box (81) is symmetrically provided with bayonet openings (811) communicating with the interior on both sides.

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