Telescopic hole protection device

Abstract

The utility model discloses a telescopic hole protecting device, which relates to the technical field of construction tools, and is characterized in that the telescopic hole protecting device comprises a main cover plate used for sealing a hole, a second cover plate capable of extending and unfolding from one side of the main cover plate is accommodated in the main cover plate, and the upper side of the main cover plate and the extending end of the second cover plate are hinged with stable arm frames; the stable arm support comprises a clamping hook connected with the scaffold rod in a buckled mode and a telescopic unit arranged between the clamping hook and the main cover plate. According to the utility model, the main cover plate and the second cover plate which stretches out and draws back in the main cover plate are arranged, and the stable arm frame is arranged in a matched manner, so that the cover can be expanded into a larger sealing cover surface through stretching out and drawing back and can be quickly fixed with the protective fence, and further holes with different specifications and sizes can be conveniently matched and sealed; and manpower consumption caused by cutting the template to seal the hole is avoided, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of construction tool technology, specifically to a retractable opening protection device. Background Technology

[0002] During the construction of buildings, there are often a large number of reserved openings in the floor slabs. In order to prevent people from falling through the gaps, wooden cover plates and protective railings made of scaffolding are usually installed at the openings. Since the openings are of different sizes, the wooden cover plates need to be cut to fit them properly so that they are not too big or too small. However, cutting requires the use of special tools, which need to be found and retrieved each time. At the same time, oversized templates are not easy to carry and transport, which increases the workload of construction workers and consumes a lot of human resources.

[0003] In view of this, a design or technical improvement is proposed to solve the above problems.

[0004] The above content is only used to help understand the technical solution of this utility model and does not represent an admission that the above content is the closest prior art. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned shortcomings and provide a retractable opening protection device.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A retractable opening protection device includes a main cover plate for sealing the opening, and a second cover plate that can extend and unfold from one side is housed inside the main cover plate. A stabilizing boom is hinged to the upper side of the main cover plate and the extended end of the second cover plate. The stabilizing boom includes a hook that is fastened to a scaffold pole and a telescopic unit disposed between the hook and the main cover plate.

[0008] Furthermore, the telescopic unit includes a connecting arm hinged to the main cover plate, a movable arm with one end sliding at the upper limit of the connecting arm and the other end hinged to a hook, and a bolt group for locking the relative position of the connecting arm and the movable arm.

[0009] Furthermore, a first limiting groove is provided on the connecting arm, and the movable arm is engaged in the first limiting groove for limiting sliding. Second limiting grooves are provided on the upper and lower sides of the first limiting groove. The bolt group passes through the movable arm and is limited to sliding in the second limiting groove, wherein the bolt head and nut of the bolt group are respectively clamped on the upper and lower sides of the connecting arm.

[0010] Furthermore, the main cover plate has a first receiving cavity, the second cover plate is disposed and slidably limited within the first receiving cavity, the side end of the first receiving cavity has a first side opening for the second cover plate to extend movably, and the lower side of the second cover plate is also provided with a third cover plate that can extend and unfold from inside the first receiving cavity, wherein the protruding end of the third cover plate is located adjacent to the protruding end of the second cover plate, and the direction of movement is perpendicular to the direction of movement of the second cover plate; a stabilizing arm is provided on the protruding side of the third cover plate.

[0011] Furthermore, the third cover plate also has a second receiving cavity inside, and a fourth cover plate that can be extended and unfolded is provided in the second receiving cavity. The extension side of the fourth cover plate is the same as the extension side of the second cover plate. The side end of the second receiving cavity has a second side opening for the fourth cover plate to extend out, and the side end of the first receiving cavity has a third side opening for the fourth cover plate to extend out and slide laterally.

[0012] Furthermore, a stabilizing boom is provided on the protruding side of the second side opening and the second cover plate in the same direction. The fourth cover plate is hinged to the stabilizing boom through a fixing lug provided at its end. A limit arm is provided on the fixing lug. A third limiting groove is provided at the protruding end of the second cover plate for the limiting arm to slide in a limited position.

[0013] Compared with the prior art, the beneficial effects of this solution are: by setting a main cover plate and a second cover plate that extends and retracts inside it, and by setting a stabilizing arm, this utility model can extend and retract to form a larger covering surface and quickly fix it to the protective fence. This allows it to easily adapt to cover openings of different sizes, avoids the manpower consumption caused by cutting templates to cover openings, and improves work efficiency. Attached Figure Description

[0014] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0015] Figure 1 This is a frontal perspective view of an embodiment of the present utility model;

[0016] Figure 2 This is a side perspective view of an embodiment of the present utility model;

[0017] Figure 3 This is a rear-view perspective view of an embodiment of the present utility model;

[0018] Figure 4 This is a schematic diagram of the main cover plate in an embodiment of the present utility model;

[0019] Figure 5This is a schematic diagram of the structure of this utility model without the stabilizing boom;

[0020] Figure 6 This is a schematic diagram of the internal structure of the main cover plate in an embodiment of this utility model;

[0021] Figure 7 This is a disassembly diagram of the second cover plate and the fourth cover plate in an embodiment of this utility model;

[0022] Figure 8 This is a disassembly diagram of the third cover plate and the fourth cover plate in an embodiment of this utility model;

[0023] Figure 9 This is a schematic diagram of the structure of the stabilizing boom in an embodiment of this utility model;

[0024] Figure 10 This is a disassembly diagram of the stabilizing boom in an embodiment of this utility model.

[0025] In the diagram: 1. Main cover plate; 11. Second cover plate; 2. Hook; 21. Connecting arm; 22. Movable arm; 23. Bolt assembly; 24. First limiting slide groove; 25. Second limiting slide groove; 3. First receiving cavity; 31. First side opening; 32. Third cover plate; 4. Second receiving cavity; 41. Fourth cover plate; 42. Second side opening; 43. Third side opening; 5. Fixing lug; 51. Limiting hook arm; 52. Third limiting slide groove. Detailed Implementation

[0026] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] like Figure 1-10 The retractable opening protection device shown includes a main cover plate 1 for sealing the opening. The main cover plate 1 houses a second cover plate 11 that can extend and unfold from one side. A stabilizing arm is hinged to the upper side of the main cover plate 1 and the extended end of the second cover plate 11. The stabilizing arm includes a hook 2 that is fastened to the scaffold pole and a telescopic unit disposed between the hook 2 and the main cover plate 1. The device seals the opening through the main cover plate 1 and is fixed to the protective fence around the opening through the stabilizing arm at its upper end, thereby stabilizing the position of the main cover plate 1. At the same time, when the opening is larger than the sealing area of ​​the main cover plate 1, the second cover plate 11 can extend from its interior to form a larger sealing surface to fit the opening, thus improving the applicability of the device.

[0028] In one embodiment, the telescopic unit includes a connecting arm 21 hinged to the main cover plate 1, a movable arm 22 with one end sliding at the upper limit of the connecting arm 21 and the other end hinged to the hook 2, and a bolt group 23 for locking the relative positions of the connecting arm 21 and the movable arm 22. The connecting arm 21 is provided with a first limiting groove 24, and the movable arm 22 is engaged in the first limiting groove 24 for limiting sliding. The upper and lower sides of the first limiting groove 24 are provided with second limiting grooves 25. The bolt group 23 passes through the movable arm 22 and is limited to sliding in the second limiting groove 25. The bolt head and nut of the bolt group 23 are respectively clamped on the upper and lower sides of the connecting arm 21. Since there is a certain distance between the device and the protective fence after the opening is sealed, the movable arm 22 is stretched to slide in the first limiting groove 24, thereby making the hook 2 approach the protective fence and engage with its crossbar. Then, the bolt group 23 is used to lock the movable arm 22 and the connecting arm 21, thereby achieving the effect of conveniently fixing the cover.

[0029] In one embodiment, a first receiving cavity 3 is provided on the main cover plate 1, and a second cover plate 11 is disposed and slidably limited within the first receiving cavity 3. A first side opening 31 for the second cover plate 11 to extend movably is provided on the side end of the first receiving cavity 3. A third cover plate 32 that can extend and unfold from inside the first receiving cavity 3 is also provided on the lower side of the second cover plate 11, wherein the extended end of the third cover plate 32 is located adjacent to the extended end of the second cover plate 11, and the direction of movement is perpendicular to the direction of movement of the second cover plate 11. A stabilizing arm is provided on the extended side of the third cover plate 32, and a second receiving cavity 4 is provided inside the third cover plate 32. A fourth cover plate 41 that can extend and unfold is provided in the second receiving cavity 4, wherein the extended side of the fourth cover plate 41 is adjacent to the extended side of the second cover plate 11. Similarly, the second accommodating cavity 4 has a second side opening 42 for the fourth cover plate 41 to extend from its side end, and the first accommodating cavity 3 has a third side opening 43 for the fourth cover plate 41 to extend and slide laterally. The third cover plate 32 can extend from the other side of the main cover plate 1, thereby forming a larger sealing surface. At the same time, since the sealing surface of the second cover plate 11 and the third cover plate 32 will form a missing corner after they extend, the fourth cover plate 41 is set inside the third cover plate 32. The extension of the fourth cover plate 41 can fill the missing corner, thereby forming a complete square sealing surface. At the same time, the extension and cooperation between multiple sets of plates in two directions also makes the overall sealing surface expansion shape more balanced and more suitable for the opening.

[0030] In one embodiment, a stabilizing arm is provided on the protruding side of the second side opening 42 and the second cover plate 11 in the same direction. The fourth cover plate 41 is hinged to the stabilizing arm via a fixing lug 5 at its end. A limiting arm 51 is provided on the fixing lug 5. A third limiting groove 52 is provided at the protruding end of the second cover plate 11 for limiting the sliding of the limiting arm 51. The engagement between the limiting arm 51 and the third limiting groove 52 ensures better fit between the device structures. This prevents gaps from being formed when expanding the area from the adjacent side, regardless of whether the second cover plate 11 or the third cover plate 32 is pulled out first. That is, when the second cover plate 11 is pulled out first, it will drive the fourth cover plate 41 through the fixing lug 5. When the cover plate 41 is pulled out simultaneously, the fourth cover plate 41 is located below the second cover plate 11. When the third cover plate 32 is pulled out, it will drive the fourth cover plate 41 to slide laterally. At this time, the limiting arm 51 slides in the third limiting groove 52, so that the fourth cover plate 41 slides relative to the second cover plate 11. The second cover plate 11 is kept stationary by the first side opening 31, thereby extending the width of the rectangular sealing surface laterally. When the third cover plate 32 is pulled out first, it will bring out the fourth cover plate 41 to slide laterally. Then, when the fourth cover plate 41 is pulled out, the fourth cover plate 41 will drive the second cover plate 11 to extend synchronously through the limiting arm 51, achieving the same sealing surface unfolding effect as described above.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A telescopic opening protection device characterized in that: It comprises a main cover plate (1) for covering the opening, the inside of the main cover plate (1) is provided with a second cover plate (11) which can be unfolded from one side of the main cover plate (1), and the upper side of the main cover plate (1) and the unfolded end of the second cover plate (11) are both provided with a stabilizing arm support. The stabilizing arm support comprises a hook (2) connected with the pole buckle and a telescopic unit arranged between the hook (2) and the main cover plate (1).

2. The retractable opening protector according to claim 1, wherein: The telescopic unit comprises a connecting arm (21) hinged with the main cover plate (1), a movable arm (22) with one end limited to slide on the connecting arm (21) and the other end hinged with the hook (2), and a bolt set (23) for locking the relative position of the connecting arm (21) and the movable arm (22).

3. The retractable opening protector according to claim 2, wherein: A first limiting sliding groove (24) is formed on the connecting arm (21), the movable arm (22) is clamped in the first limiting sliding groove (24) for limited sliding, second limiting sliding grooves (25) are formed on the upper and lower sides of the first limiting sliding groove (24), the bolt set (23) passes through the movable arm (22) and is limited to slide in the second limiting sliding groove (25), and the bolt head and the nut of the bolt set (23) are clamped on the upper and lower sides of the connecting arm (21), respectively.

4. Retractable opening guard according to any one of claims 1-3, characterized in that: A first accommodating cavity (3) is formed on the main cover plate (1), the second cover plate (11) is arranged in the first accommodating cavity (3) for limited sliding, a first side opening (31) is formed on the side end of the first accommodating cavity (3) for the second cover plate (11) to move out, and a third cover plate (32) which can be unfolded from the inside of the first accommodating cavity (3) is further arranged on the lower side of the second cover plate (11), wherein the unfolded end of the third cover plate (32) is located on the adjacent side of the unfolded end of the second cover plate (11), and the movement direction is perpendicular to the movement direction of the second cover plate (11). The unfolded side of the third cover plate (32) is provided with a stabilizing arm support.

5. The retractable opening protector according to claim 4, wherein: The inside of the third cover plate (32) is further provided with a second accommodating cavity (4), and a fourth cover plate (41) which can be unfolded is arranged in the second accommodating cavity (4), wherein the unfolded side of the fourth cover plate (41) is the same as the unfolded side of the second cover plate (11), a second side opening (42) is formed on the side end of the second accommodating cavity (4) for the fourth cover plate (41) to move out, and a third side opening (43) is formed on the side end of the first accommodating cavity (3) for the fourth cover plate (41) to move out and slide laterally.

6. The retractable opening protector according to claim 5, wherein: The unfolded side of the second cover plate (11) is provided with a stabilizing arm support, the fourth cover plate (41) is hinged with the stabilizing arm support through a fixing lug (5) arranged at the end of the fourth cover plate (41), a limiting clamping arm (51) is arranged on the fixing lug (5), and the unfolded end of the second cover plate (11) is provided with a third limiting sliding groove (52) for the limiting clamping arm (51) to slide.

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