Protective mesh fixing device for air shaft opening

Abstract

The utility model discloses an air shaft opening protective net fixing device which comprises a fixing plate, and the fixing plate comprises an L-shaped first plate body and an L-shaped second plate body. A strip-shaped open groove is formed in one side of the first plate body, an assembly cavity is formed in the other side of the first plate body, and a first mounting hole penetrating through the assembly cavity is formed in the upper end of the first plate body; a mounting block is integrally formed at the end, facing the assembling cavity, of the second plate body, a second mounting hole matched with the first mounting hole is formed in the mounting block, and after the mounting block extends to the assembling cavity, a fastener is arranged at the overlapping position of the first mounting hole and the second mounting hole. The wind well protection device has the advantages that the technical problems that in the prior art, a wind well protection device is large in overall size, inconvenient to install and inconvenient to disassemble and transfer subsequently are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of air shaft opening protection, in particular to a device for fixing a protective mesh for an air shaft opening. Background Art

[0002] The outdoor air shaft is a passage reserved in the building, mainly used for ventilation or waterproofing, and can also be used for escape and fire fighting in critical moments. Some buildings have ventilation requirements, or the building volume is large and the sealing is high, such as the interior of a large building or a basement, so a ventilation shaft should be installed. During the construction process, the outdoor air shaft is designed according to the construction drawings. During the main construction process, the outdoor air shaft opening is reserved. However, at this time, the protective door of the air shaft opening has not been built and installed. The opening is exposed, and waste or garbage in the construction environment may fall into the air shaft, and may even cause construction workers to slip and fall, posing a serious safety hazard. With the increasing maturity of the lean construction model, some practices in the traditional construction model can no longer meet the needs of rapid insertion of lean construction. In order to meet the comprehensive requirements of on-site air shaft protection and its economy under the lean construction model, the cost of air shaft opening protection should be minimized and the turnover of the template used at the air shaft opening should be increased, while meeting the on-site requirements for the fixation of the steel mesh for air shaft opening protection, so as to ensure the reliability and economy of on-site air shaft opening protection.

[0003] In Chinese utility model CN216194933U, a "wind shaft protection device" is proposed. This device mainly solves the problems of poor safety and protection of existing wind shaft protection devices. However, the overall size of the device is large, and subsequent turnover is inconvenient. Secondly, during the installation process, it is necessary to groove the original template of the wind shaft, which increases the loss of the template at the wind shaft and reduces its construction efficiency. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and provide a device for fixing the protective mesh for the wind shaft opening, so as to solve the technical problems in the prior art that the wind shaft protection device is large in overall size, inconvenient in installation, and inconvenient to disassemble and circulate subsequently.

[0005] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0006] In a first aspect, the utility model provides a device for fixing a protective mesh for an air shaft opening, comprising: a fixing plate, the fixing plate comprising an L-shaped first plate body and a second plate body;

[0007] A strip-shaped slot is provided on one side of the first plate, an assembly cavity is provided on the other side of the first plate, and a first mounting hole is provided on the upper end of the first plate, penetrating the assembly cavity;

[0008] A mounting block is integrally formed at one end of the second plate body facing the assembly cavity, and a second mounting hole is provided on the mounting block to cooperate with the first mounting hole. When the mounting block extends to the assembly cavity, a fastener is provided at the overlapping position of the first mounting hole and the second mounting hole.

[0009] In some embodiments, the cross-section of the assembly cavity is square, and a plurality of positioning holes are opened inside the assembly cavity, and the number of the positioning holes is at least three.

[0010] In some embodiments, a side of the mounting block facing the assembly cavity is provided with positioning posts corresponding one-to-one to the positioning holes.

[0011] In some embodiments, an extension plate is laterally connected to the lower end of the second plate body. The extension plate is located below the mounting block, and a locking area is formed between the mounting block and the extension plate.

[0012] In some embodiments, a third mounting hole is formed on the extension plate to cooperate with the first mounting hole and the second mounting hole, and the first mounting hole, the second mounting hole and the third mounting hole are connected by the fastener.

[0013] In some embodiments, the fastener includes a connecting bolt and a connecting nut, the lower end of the connecting bolt passes through the first mounting hole, the second mounting hole and the third mounting hole, and the lower end of the connecting bolt is threadedly connected to the connecting nut.

[0014] In some embodiments, screw holes are further provided on the second plate body, and fastening bolts are provided in the screw holes. The fastening bolts are used to connect the fixing plate to the wooden square. The side of the wooden square facing away from the fixing plate is connected to a template, and the template is set on the concrete beam. A protective mesh is placed in the groove.

[0015] Compared with the prior art, the utility model provides a fixing device for a protective mesh for an air shaft opening. When the fixing plate needs to be spliced, one end of the second plate body with the mounting block is inserted into the assembly cavity of the first plate body, thereby causing the positions of the first mounting hole and the second mounting hole to coincide. At this time, the first plate body and the second plate body are spliced together by fasteners to form a Z-shaped fixing plate, wherein the fixing plate is installed on the side wall of the air shaft, and the protective mesh is placed in the slot. By arranging multiple fixing plates and protective meshes, a protective structure is formed to prevent workers from falling into the air shaft during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the expansion of the device for fixing the protective mesh for the ventilation shaft opening provided by an embodiment of the utility model;

[0017] Figure 2 This is a side view of a device for fixing a protective mesh sheet for an air shaft opening provided by an embodiment of the present utility model;

[0018] Figure 3 This is a schematic diagram of the interior of an assembly cavity for a device for fixing a protective mesh sheet at an air shaft opening provided by an embodiment of the present utility model;

[0019] Figure 4 This is a schematic diagram of the overall coordination of the utility model embodiment provided for the wind shaft opening protective mesh fixing device;

[0020] Figure 5 This is a schematic diagram of the assembly of a fixing plate for a protective mesh fixing device for an air shaft opening provided by an embodiment of the present utility model.

[0021] Explanation of the accompanying drawings: 1. Fixing plate; 2. First plate body; 21. Slot; 22. Assembly cavity; 221. Positioning hole; 23. First mounting hole; 3. Second plate body; 31. Mounting block; 311. Positioning column; 32. Second mounting hole; 33. Extension plate; 331. Third mounting hole; 34. Screw hole; 4. Fastener; 41. Connecting bolt; 42. Connecting nut; 5. Concrete beam; 51. Formwork; 52. Wooden square; 6. Fastening bolt; 7. Protective mesh. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] See also Figure 1 , Figure 1 This is a structural schematic diagram of a device for fixing a protective mesh for an air shaft opening in one embodiment of the present invention. A device for fixing a protective mesh for an air shaft opening includes a fixing plate 1, and the fixing plate 1 includes an L-shaped first plate body 2 and a second plate body 3; a strip-shaped slot 21 is provided on one side of the first plate body 2, and an assembly cavity 22 is provided on the other side of the first plate body 2, and a first mounting hole 23 that passes through the assembly cavity 22 is provided on the upper end of the first plate body 2; a mounting block 31 is integrally formed at one end of the second plate body 3 facing the assembly cavity 22, and a second mounting hole 32 that cooperates with the first mounting hole 23 is provided on the mounting block 31. When the mounting block 31 extends to the assembly cavity 22, a fastener 4 is provided at the overlapping position of the first mounting hole 23 and the second mounting hole 32.

[0024] In this embodiment, when the fixed plate 1 needs to be spliced, one end of the second plate body 3 with the mounting block 31 is inserted into the assembly cavity 22 of the first plate body 2, thereby causing the positions of the first mounting hole 23 and the second mounting hole 32 to coincide with each other. At this time, the first plate body 2 and the second plate body 3 are spliced together by the fastener 4 to form a Z-shaped fixed plate 1, wherein the fixed plate 1 is installed on the side wall of the air shaft, and the protective mesh 7 is placed in the slot 21. By arranging multiple fixed plates 1 and protective meshes 7, a protective structure is formed to prevent workers from falling into the air shaft during operation.

[0025] In one embodiment, see Figure 1 - Figure 3 , in order to facilitate the splicing of the first plate body 2 and the second plate body 3, the cross section of the assembly cavity 22 is square, and a plurality of positioning holes 221 are opened inside the assembly cavity 22, and the number of positioning holes 221 is at least three. A side of the mounting block 31 facing the assembly cavity 22 is provided with a positioning column 311 corresponding to the positioning holes 221 one by one. The lower end of the second plate body 3 is laterally connected to an extension plate 33, and the extension plate 33 is located below the mounting block 31, and a locking area is formed between the mounting block 31 and the extension plate 33. A third mounting hole 331 is opened on the extension plate 33 to match the first mounting hole 23 and the second mounting hole 32. The first mounting The hole 23, the second mounting hole 32 and the third mounting hole 331 are connected by a fastener 4, and the fastener 4 includes a connecting bolt 41 and a connecting nut 42. The lower end of the connecting bolt 41 passes through the first mounting hole 23, the second mounting hole 32 and the third mounting hole 331, and the lower end of the connecting bolt 41 is threadedly connected to the connecting nut 42. A screw hole 34 is also provided on the second plate body 3, and a fastening bolt 6 is provided in the screw hole 34. The fastening bolt 6 is used to connect the fixing plate 1 to the wooden square 52. The side of the wooden square 52 facing away from the fixing plate 1 is connected to the template 51. The template 51 is set on the concrete beam 5, and a protective mesh 7 is placed in the slot 21.

[0026] In this embodiment, an assembly cavity 22 is provided on the first plate body 2 to facilitate the extension of the mounting block 31 on the second plate body 3 into the assembly cavity 22, and three positioning holes 221 are provided on the inner wall of the assembly cavity 22 to facilitate the extension of the three positioning posts 311 on the mounting block 31 into the positioning holes 221, thereby quickly completing the assembly between the first plate body 2 and the second plate body 3, and after the assembly is completed, the positions of the first mounting hole 23 and the second mounting hole 32 coincide, the extension plate 33 is located below the second plate body 3, and the third mounting hole 331 is located between the second mounting hole 32. The positions of the plates 2 and 3 are overlapped. At this time, the connecting bolts 41 are passed through the first mounting hole 23, the second mounting hole 32 and the third mounting hole 331 in sequence, and the connecting nuts 42 are threadedly connected under the connecting bolts 41 to quickly fix the first plate body 2 and the second plate body 3 to form a complete Z-shaped fixing plate 1. The fixing plate 1 is placed on the wooden square 52, and the screw holes 34 are passed through by the tightening bolts 6 to connect the fixing plate 1 to the wooden square 52. Then the protective mesh 7 is placed in the slots 21 to complete the assembly of the protective mesh 7.

[0027] In order to better understand the present invention, the following Figures 1 to 5 The technical solution of the present invention is described in detail: the staff inserts the second plate body 3 horizontally into the assembly cavity 22 of the first plate body 2, so that the mounting block 31 extends into the assembly cavity 22, and causes the positioning column 311 to extend into the positioning hole 221. At this time, the extension plate 33 is located below the first plate body 2, and the positions of the first mounting hole 23, the second mounting hole 32 and the third mounting hole 331 coincide with each other. The staff inserts the connecting bolt 41 through the first mounting hole 23, the second mounting hole 32 and the third mounting hole 331, and screws the connecting nut 42 under the connecting bolt 41, so that A Z-shaped overall structure is formed between the first plate body 2 and the second plate body 3, and then the complete fixing plate 1 is placed on the wooden square 52 outside the concrete beam 5, and the fixing plate 1 is fixed to the wooden square 52 by fastening the bolts 6 through the screw holes 34. The staff places the protective mesh 7 in the slot 21 of the fixing plate 1, thereby limiting the protective mesh 7. In actual installation, multiple fixing plates 1 and protective meshes 7 can be installed according to actual needs. The device is easy to install and adopts a splicing structure, which is convenient for subsequent replacement of parts. At the same time, it is small in size and convenient for subsequent carrying and turnover.

[0028] The specific embodiments of the present invention described above do not limit the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A device for fixing a protective mesh at an air shaft opening, characterized in that: comprising a fixing plate, the fixing plate comprising an L-shaped first plate body and a second plate body; A strip-shaped slot is provided on one side of the first plate, an assembly cavity is provided on the other side of the first plate, and a first mounting hole is provided on the upper end of the first plate, penetrating the assembly cavity; A mounting block is integrally formed at one end of the second plate body facing the assembly cavity, and a second mounting hole is provided on the mounting block to cooperate with the first mounting hole. When the mounting block extends to the assembly cavity, a fastener is provided at the overlapping position of the first mounting hole and the second mounting hole.

2. The device for fixing a protective mesh sheet for an air shaft opening according to claim 1, characterized in that: The cross section of the assembly cavity is square, and a plurality of positioning holes are opened inside the assembly cavity, and the number of the positioning holes is at least three.

3. The device for fixing a protective mesh sheet for an air shaft opening according to claim 2, characterized in that: A side of the mounting block facing the assembly cavity is provided with positioning columns corresponding one to one with the positioning holes.

4. The device for fixing a protective mesh sheet for an air shaft opening according to claim 1, characterized in that: The lower end of the second plate body is laterally connected to an extension plate, the extension plate is located below the mounting block, and a locking area is formed between the mounting block and the extension plate.

5. The device for fixing a protective mesh sheet for an air shaft opening according to claim 4, characterized in that: The extension plate is provided with a third mounting hole that matches the first mounting hole and the second mounting hole. The first mounting hole, the second mounting hole and the third mounting hole are connected by the fastener.

6. The device for fixing a protective mesh sheet for an air shaft opening according to claim 5, characterized in that: The fastener includes a connecting bolt and a connecting nut. The lower end of the connecting bolt passes through the first mounting hole, the second mounting hole and the third mounting hole. The lower end of the connecting bolt is threadedly connected to the connecting nut.

7. The device for fixing a protective mesh sheet for an air shaft opening according to claim 1, characterized in that: The second plate body is also provided with screw holes, in which fastening bolts are provided. The fastening bolts are used to connect the fixing plate to the wooden square. The side of the wooden square facing away from the fixing plate is connected to a template, which is set on a concrete beam, and a protective mesh is placed in the slot.

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