Excavation protection device

Abstract

The utility model discloses an excavation protection device, and mainly relates to the technical field of construction protection. Comprising a bottom supporting sleeve and a combined protective cylinder arranged at the top of the bottom supporting sleeve, a plurality of construction windows are evenly formed in the outer wall of the bottom supporting sleeve, the bottom end of the combined protective cylinder is detachably connected with the bottom supporting sleeve, and the combined protective cylinder comprises a plurality of protective sleeves which are sequentially connected from bottom to top; every two adjacent protection sleeves are detachably connected, and the outer diameter of the combined protection sleeve and the outer diameter of the protection sleeves are both smaller than the inner diameter of an excavated foundation pit. The protective sleeves are assembled and placed in order from bottom to top in the digging construction process, the purposes of preventing earthwork collapse and protecting the personal safety of constructors can be achieved, and the protective sleeve is convenient to assemble and disassemble, low in cost and good in protective effect.

Description

Technical Field

[0001] The utility model relates to the technical field of construction protection, in particular to an excavation protection device. Background Art

[0002] An excavated foundation is a foundation formed by directly digging (drilling) the required foundation pit in natural soil using machinery or manual labor, and pouring a steel skeleton and concrete directly into the foundation pit. During the manual excavation process, the stability of the pit wall soil is closely related to the personal safety of the construction workers. Since the depth of the excavated foundation is generally much greater than the height of a human body, once the pit wall soil collapses, the lives of the construction workers will not be guaranteed. To solve this problem, a utility model patent with publication number: CN201574396U discloses a wall protection device for an excavated foundation, which is a hollow columnar body obtained by pouring concrete, and uses the hollow columnar body as a wall protection device. Although this solves the safety hazard, the construction process of the hollow columnar body is complicated and the cost is relatively high. Utility Model Content

[0003] The purpose of the utility model is to solve the problems existing in the prior art and provide an excavation protection device. By assembling and placing protective sleeves in an orderly manner from bottom to top during excavation construction, the purpose of preventing earth collapse and protecting the personal safety of construction workers can be achieved. The utility model is easy to assemble and disassemble, has low cost, and has good protection effect.

[0004] In order to achieve the above-mentioned purpose, the present invention is realized through the following technical solutions:

[0005] A excavation protection device includes a bottom support sleeve and a combined protective sleeve arranged on the top of the bottom support sleeve. Several construction windows are evenly arranged on the outer wall of the bottom support sleeve. The bottom end of the combined protective sleeve is detachably connected to the bottom support sleeve. The combined protective sleeve includes several protective sleeves connected in sequence from bottom to top, and two adjacent protective sleeves are detachably connected. The outer diameters of the combined protective sleeve and the protective sleeve are both smaller than the inner diameter of the excavated foundation pit.

[0006] Preferably, a plurality of air holes are provided on the outer wall of the protective sleeve.

[0007] Preferably, the bottom support sleeve includes a first upper ring, a first lower ring and a plurality of first support columns, the top end of the first support column is fixedly connected to the first upper ring, and the bottom end is fixedly connected to the first lower ring.

[0008] Preferably, a plurality of the first support columns are evenly arranged along the circumference of the first upper circular ring, and the first support columns are located outside the first upper circular ring.

[0009] Preferably, the protective sleeve includes a second upper ring, a second lower ring and several second support columns, the top end of the second support column is fixedly connected to the second upper ring, and the bottom end is fixedly connected to the second lower ring, and a ring-shaped iron sheet is provided on the outside of the frame structure composed of the second upper ring, the second lower ring and the several second support columns.

[0010] Preferably, a plurality of the second support columns are evenly arranged along the circumference of the second upper circular ring, the annular iron sheet is an iron sheet with holes, and the second support columns are located outside the second upper circular ring.

[0011] Preferably, the bottom of the protective sleeve is provided with a plurality of plug-in parts, the top of the protective sleeve is provided with a first receiving part adapted to the plug-in parts, and the top of the bottom supporting sleeve is provided with a second receiving part adapted to the plug-in parts.

[0012] Preferably, each of the plug-in parts includes two plug-in posts, and the two plug-in posts of the same plug-in part are located on the same radial line of the protective sleeve, and the first receiving part and the second receiving part each include two plug-in sleeves adapted to the plug-in posts.

[0013] Preferably, the difference between the outer diameter of the combined protective tube and protective sleeve and the inner diameter of the excavated foundation pit is 8 to 15 cm.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The utility model prevents earthwork collapse and protects the personal safety of construction workers by sequentially assembling and placing the bottom support sleeve and the protective sleeve from bottom to top during excavation construction. The utility model is easy to assemble and disassemble, has low cost and good protection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 is a top view of the bottom support sleeve;

[0018] Figure 3 Top view of the protective sleeve

[0019] Figure 4 It is a schematic diagram of the connection structure between two adjacent protective sleeves;

[0020] The numbers in the accompanying drawings are: 1. Bottom support sleeve; 11. Construction window; 2. Combined protective tube; 111. First upper ring; 112. First support column; 121. Second upper ring; 122. Second support column; 123. Ring-shaped iron sheet; 21. Insertion part; 22. First receiving part. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the contents of this invention, those skilled in the art may make various changes or modifications to the present invention, and that these equivalent forms also fall within the scope defined in this application.

[0022] Example: As shown in the attached Figure 1-4 As shown, the utility model is an excavation protection device, comprising a bottom support sleeve 1 and a combined protective tube 2 arranged on the top of the bottom support sleeve 1, a number of construction windows 11 are evenly provided on the outer wall of the bottom support sleeve 1, and the bottom support sleeve 1 can adopt a frame structure, and the bottom end of the combined protective tube 2 is detachably connected to the bottom support sleeve 1, and a number of first U-shaped frames adapted to the bottom support sleeve 1 can be evenly welded at the bottom end of the combined protective tube 2 along the circumference of the combined protective tube 2, the inner width of the first U-shaped frame is greater than the thickness of the wall of the bottom support sleeve 1, and when the combined protective tube 2 is placed on the top of the bottom support sleeve 1, the top of the bottom support sleeve 1 is stuck in the first U-shaped frame.

[0023] The combined protective tube 2 includes several protective sleeves connected in sequence from bottom to top. Two adjacent protective sleeves can be detachably connected. Several second U-shaped frames can be arranged at the bottom end of the protective sleeve. The inner width of the second U-shaped frame is greater than the thickness of the wall of the protective sleeve. The outer diameters of the combined protective tube 2 and the protective sleeve are both smaller than the inner diameter of the excavated foundation pit.

[0024] Preferably, a plurality of air holes are provided on the outer wall of the protective sleeve.

[0025] Preferably, as attached Figure 2 As shown, the bottom support sleeve 1 includes a first upper ring 111, a first lower ring and several first support columns 112. The first upper ring 111, the first lower ring and several first support columns 112 are welded together. The top of the first support column 112 is fixedly connected to the first upper ring 111, and the bottom end is fixedly connected to the first lower ring. The first support column 112 is made of steel bars. The first upper ring 111 and the first lower ring can be bent by steel bars. The outer diameters of the first upper ring 111 and the first lower ring are the same. The diameter of the steel bars used in the first upper ring 111, the first lower ring and the first support column 112 is not less than 16 mm. The bottom support sleeve 1 can adopt four first support columns 112, and the space between two adjacent first support columns 112 is the construction window 11.

[0026] Preferably, a plurality of the first support columns 112 are evenly arranged along the circumference of the first upper circular ring 111 , and the first support columns 112 are located outside the first upper circular ring 111 .

[0027] Preferably, as attached Figure 3 As shown, the protective sleeve includes a second upper ring 121, a second lower ring and several second support columns 122, the top of the second support column 122 is fixedly connected to the second upper ring 121, and the bottom end is fixedly connected to the second lower ring, and an annular iron sheet 123 is provided on the outside of the frame structure composed of the second upper ring 121, the second lower ring and the several second support columns 122. The outer diameters of the first upper ring 111, the first lower ring, the second upper ring 121 and the second lower ring are the same. The second upper ring 121 and the second lower ring can be formed by bending steel bars. The diameter of the steel bars used in the second upper ring 121, the second lower ring and the second support columns 122 is not less than 16 mm. The protective sleeve can adopt twelve second support columns 122. After the second upper ring 121, the second lower ring and the second support columns 122 are welded into one, a layer of iron sheet is welded on the outside of the frame structure.

[0028] Preferably, a plurality of the second support columns 122 are evenly arranged along the circumference of the second upper circular ring 121 , the annular iron sheet 123 is an iron sheet with holes, and the second support columns 122 are located outside the second upper circular ring 121 .

[0029] Preferably, as attached Figure 4 As shown, the bottom of the protective sleeve is provided with a plurality of plug-in parts 21, the top of the protective sleeve is provided with a first receiving part 22 adapted to the plug-in part 21, and the top of the bottom support sleeve 1 is provided with a second receiving part adapted to the plug-in part 21. The plug-in part 21 can be a plug-in rod welded to the bottom of the protective sleeve, or it can be a downward extension of the second support column 122. The first receiving part 22 can be a first plug-in tube welded to the top of the protective sleeve, and the second receiving part can be a second plug-in tube welded to the top of the bottom support sleeve 1. Furthermore, each of the plug-in parts 21 includes two plug-in columns, and the two plug-in columns form a U-shaped structure. The two plug-in columns of the same plug-in part 21 are located on the same radial line of the protective sleeve. The first receiving part 22 and the second receiving part each include two plug-in sleeves adapted to the plug-in columns.

[0030] Preferably, the difference between the outer diameter of the combined protective tube 2 and the protective sleeve and the inner diameter of the excavated foundation pit is 8 to 15 cm.

[0031] The height of the protective sleeve and the bottom support sleeve 1 can be set as needed, for example, to 1m. When excavation construction begins, construction workers first excavate the soil to a depth of one meter, then place the bottom support sleeve 1 in the excavation pit and place a section of protective sleeve on top. As the excavation depth increases, when the top of the top structure is about to fall below the excavation pit entrance, another section of protective sleeve is placed on top. This cycle repeats until the excavation reaches the designed elevation. When an accident occurs and the soil collapses, the collapsed soil squeezes the device, and a small amount of soil will enter the space at a height of 1m at the bottom layer, which will not endanger personal safety. The collapsed soil on the upper part, protected by the device, cannot enter the interior and pose a threat to personal safety. Construction workers can go up and down by stepping on the first upper ring 111, the first lower ring, the second upper ring 121, and the second lower ring, or by climbing a separate ladder.

Claims

1. A digging protection device, characterized in that: The invention comprises a bottom support sleeve (1) and a combined protective sleeve (2) arranged on the top of the bottom support sleeve (1); a plurality of construction windows (11) are evenly arranged on the outer wall of the bottom support sleeve (1); the bottom end of the combined protective sleeve (2) is detachably connected to the bottom support sleeve (1); the combined protective sleeve (2) comprises a plurality of protective sleeves connected in sequence from bottom to top; two adjacent protective sleeves are detachably connected; and the outer diameters of the combined protective sleeve (2) and the protective sleeve are both smaller than the inner diameter of the excavated foundation pit.

2. The excavation protection device according to claim 1, characterized in that: A plurality of air holes are provided on the outer wall of the protective sleeve.

3. The excavation protection device according to claim 1, characterized in that: The bottom support sleeve (1) comprises a first upper circular ring (111), a first lower circular ring and a plurality of first support columns (112); the top end of the first support column (112) is fixedly connected to the first upper circular ring (111), and the bottom end is fixedly connected to the first lower circular ring.

4. The excavation protection device according to claim 3, characterized in that: A plurality of the first support columns (112) are evenly arranged along the circumference of the first upper circular ring (111), and the first support columns (112) are located outside the first upper circular ring (111).

5. The excavation protection device according to claim 1, characterized in that: The protective sleeve comprises a second upper circular ring (121), a second lower circular ring and a plurality of second support columns (122); the top end of the second support column (122) is fixedly connected to the second upper circular ring (121), and the bottom end is fixedly connected to the second lower circular ring; an annular iron sheet (123) is provided on the outside of the frame structure composed of the second upper circular ring (121), the second lower circular ring and the plurality of second support columns (122).

6. The excavation protection device according to claim 5, characterized in that: A plurality of the second support columns (122) are evenly arranged along the circumference of the second upper circular ring (121); the annular iron sheet (123) is an iron sheet with holes; and the second support columns (122) are located outside the second upper circular ring (121).

7. The excavation protection device according to claim 1, characterized in that: The bottom of the protective sleeve is provided with a plurality of plug-in parts (21), the top of the protective sleeve is provided with a first receiving part (22) adapted to the plug-in parts (21), and the top of the bottom supporting sleeve (1) is provided with a second receiving part adapted to the plug-in parts (21).

8. The excavation protection device according to claim 7, characterized in that: Each of the plug-in parts (21) includes two plug-in posts, and the two plug-in posts of the same plug-in part (21) are located on the same radial line of the protective sleeve. The first receiving part (22) and the second receiving part each include two plug-in sleeves adapted to the plug-in posts.

9. The excavation protection device according to claim 1, characterized in that: The difference between the outer diameter of the combined protective tube (2) and the protective sleeve and the inner diameter of the excavated foundation pit is 8 to 15 cm.

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