Anti-toppling device for safety elevator of foundation pit

Abstract

The utility model belongs to the field of foundation pit construction safety, and particularly relates to an anti-toppling device for a foundation pit safety ladder cage, which comprises a plurality of sections of safety ladder cages assembled together, vertical sliding chutes are arranged on a left upright post and a right upright post of each safety ladder cage, and bolts A are embedded in the vertical sliding chutes; two strip-shaped steel plates are further included, transverse strip-shaped holes are formed in the strip-shaped steel plates, bolts A penetrate through the transverse strip-shaped holes, and the strip-shaped steel plates are fixed to the stand columns through nuts A; an inverted-U-shaped clamp is welded to the front ends of the strip-shaped steel plates, the inverted-U-shaped clamp is clamped on a wing plate of the I-shaped steel enclosing purlin, and the rear portions of the two strip-shaped steel plates are connected with a long screw. The safety ladder cage is connected with the I-shaped steel enclosing purlin of the foundation pit, the safety ladder cage is effectively prevented from toppling backwards, the device is rapid and convenient to install and can be repeatedly used, the position of the device can be conveniently adjusted according to the position of the I-shaped steel enclosing purlin, the size of a frame defined by the device can be rapidly adjusted according to the size of the safety ladder cage, and the application range is wide.

Description

Technical Field

[0001] The utility model belongs to the field of foundation pit construction safety, and in particular relates to a foundation pit safety ladder cage anti-dumping device. Background Art

[0002] During the construction of the internal structure of a deep foundation pit, a safety ladder cage needs to be assembled as a vertical up and down passage for construction workers in the foundation pit. If the foundation pit is narrow, I-beams are generally set up on both sides of the foundation pit, and then the safety ladder cage and the I-beams are fixed together to prevent them from tipping over into the foundation pit. However, if the foundation pit is wide, this method cannot be used. Some methods use ropes on the safety ladder cage to connect with screws or other components on the purlins on the side walls of the foundation pit. The direction and length of the ropes need to be determined according to the position of the components that can be connected, and the stability is poor. Summary of the Invention

[0003] The problem to be solved by the present invention is to overcome the deficiencies of the background technology and provide an anti-dumping device for a foundation pit safety ladder cage.

[0004] The present invention is achieved through the following technical solutions:

[0005] A foundation pit safety ladder cage anti-tilt device, comprising a safety ladder cage assembled together in several sections, wherein the left side of the left column of the safety ladder cage and the right side of the right column are both provided with vertical slide grooves, and bolts A are provided in the vertical slide grooves, and the end of the bolt A located in the vertical slide groove is provided with an enlarged head, the size of the enlarged head is larger than the width of the outer end opening of the vertical slide groove, and the bolt A vertically passes through the vertical slide groove and can slide up and down along the vertical slide groove; it also includes two parallel strip steel plates, and horizontal holes are provided on the strip steel plates, and the bolts A pass through the horizontal holes. Hole, bolt A and the horizontal bar hole can slide horizontally relative to each other, and a nut A is provided at the outer end of the bolt A, and the strip steel plate is fixed to the column through the nut A; the front end of the strip steel plate is welded with an inverted U-shaped clamp, and the inner width of the inverted U-shaped clamp is equal to the thickness of the wing plate of the foundation pit I-beam purlin. The inverted U-shaped clamp is clamped on the wing plate of the I-beam purlin, and a long screw rod passes through the horizontal bar holes at the rear of the two strip steel plates. Nuts B are provided at both ends of the long screw rod, and the long screw rod can slide horizontally along the horizontal bar hole, and the two strip steel plates are connected together by the long screw rod and the nut B.

[0006] Preferably, the inverted U-shaped clip is fixed together with the I-beam purlin.

[0007] Preferably, the length of the inverted U-shaped clip is 15-30 cm.

[0008] Preferably, rubber gaskets are provided between the nut A, nut B and the strip steel plate.

[0009] Preferably, an anti-slip pad is provided on the inner surface of the inverted U-shaped clip.

[0010] The present invention connects the safety ladder cage with the I-beam purlin of the foundation pit, effectively preventing the safety ladder cage from tipping over backwards, and the device has a simple structure, is quick and convenient to install, and is reusable; the position of the device can be conveniently adjusted according to the position of the I-beam purlin, and can be adjusted according to the distance between the safety ladder cage and the I-beam purlin; at the same time, the size of the frame enclosed by the device can be quickly adjusted according to the different sizes of the safety ladder cage, so that the frame enclosed by the two shaped steel plates and the long screws can be tightly attached to the safety ladder cage. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of this embodiment after removing the workbench;

[0012] Figure 2 for Figure 1 Structural diagram from another angle;

[0013] Figure 3 This is a schematic diagram of the structure of this embodiment before bending;

[0014] Figure 4 This is a schematic diagram of the structure of this embodiment when bent;

[0015] Figure 5 This is a schematic diagram of the sliding frame structure of this embodiment;

[0016] Figure 6 Schematic diagram of the bottom structure of the limiting column D in this embodiment.

[0017] In the figure, 1 is a safety ladder cage, 2 is a column, 3 is a vertical slide, 4 is a bolt A, 5 is a strip steel plate, 6 is a horizontal hole, 7 is a nut A, 8 is an inverted U-shaped clamp, 9 is an I-beam purlin, 10 is a long screw, 11 is a nut B, 12 is a rubber gasket, and 13 is an expansion head. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0019] This embodiment comprises several assembled sections of a safety cage 1. Each section has columns 2 at its four corners. Vertical chutes 3 are located on the left side of the left column 2 and the right side of the right column 2 of each section. The width of the outer opening of each chute 3 is smaller than the inner width. Bolts A4 are located within the chutes 3. The ends of the bolts A4 located within the chutes 3 have enlarged heads 13. The enlarged heads 13 are larger than the outer opening of the chutes 3 and can slide up and down along the chutes 3. Bolts A4 extend vertically outward from the chutes 3, and their diameter equals the outer opening width of the chutes 3.

[0020] Two parallel steel strips 5 are located on the left and right sides of the safety cage 1. Each strip has a horizontal hole 6, the width of which is equal to the diameter of a bolt A4. Bolt A4 passes through these holes and can slide horizontally relative to each other. Nuts A7 are located at the outer ends of the bolts A4, and tightening these nuts secures the strips 5 to the columns 2 of the safety cage 1.

[0021] An inverted U-shaped clamp 8 is welded to the front end of the strip steel plate 5. The inner width of the inverted U-shaped clamp 8 is equal to the thickness of the flange of the I-beam purlin 9 of the foundation pit. The inverted U-shaped clamp 8 can just be tightly clamped on the flange of the I-beam purlin 9. To achieve a tighter clamping connection, the inner surface of the inverted U-shaped clamp 8 is preferably provided with an anti-skid pad, which is used to increase the friction between the inverted U-shaped clamp 8 and the I-beam purlin 9. The length of the inverted U-shaped clamp 8 is preferably 15-30 cm. To make the structure more stable, the inverted U-shaped clamp 8 can be further fixed to the I-beam purlin 9, for example, by bolting the inverted U-shaped clamp 8 to the flange of the I-beam purlin 9.

[0022] A long screw 10 passes through the horizontal holes 6 at the rear of the two strip steel plates 5. Nuts B11 are provided at both ends of the long screw 10. The long screw 10 can slide horizontally along the horizontal holes 6, connecting the rear ends of the two strip steel plates 5 together through the long screw 10 and nuts B11. Preferably, rubber gaskets 12 are provided between the nut A7 and the strip steel plates 5, and between the nut B11 and the strip steel plates 5.

[0023] During construction, after the safety ladder cage 1 is assembled, put the strip steel plate 5 on the bolt A4 of the section of the safety ladder cage 1 corresponding to the I-beam purlin 9, so that the strip steel plate 5 is close to the column 2, and then slide the bolt A4 up and down to adjust the up and down position of the strip steel plate 5, and adjust the front and back position of the strip steel plate 5 relative to the bolt A4 through the horizontal hole 6, so that the inverted U-shaped clamp 8 is stuck on the corresponding I-beam purlin 9. The inverted U-shaped clamp 8 can be further fixed to the I-beam purlin 9 by bolts, and then tighten the nut A7 to fasten the strip steel plate 5 and the column 2 together. After the strip steel plates 5 on the left and right sides are fixed, pass the long screw 10 between the horizontal holes 6 at the rear of the strip steel plate 5, slide the long screw 10 back and forth so that the long screw 10 is close to the rear side of the safety ladder cage 1, and then tighten the bolt B. The number of devices installed in the present invention is determined by the number of layers of I-beam purlins 9. In this embodiment, two layers of I-beam purlins 9 are shown, which connect the safety ladder cage 1 to the upper and lower I-beam purlins 9, effectively preventing the safety ladder cage 1 from tipping backward.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A foundation pit safety ladder cage anti-dumping device, comprising a plurality of sections of a safety ladder cage (1) assembled together, characterized in that: The safety ladder cage (1) is provided with a vertical slide groove (3) on the left side of the left column (2) and the right side of the right column (2), and a bolt A (4) is provided in the vertical slide groove (3). The end of the bolt A (4) located in the vertical slide groove (3) is provided with an enlarged head (13), and the size of the enlarged head (13) is larger than the width of the outer opening of the vertical slide groove (3). The bolt A (4) passes through the vertical slide groove (3) vertically outward, and the bolt A (4) can slide up and down along the vertical slide groove (3); it also includes two parallel strip steel plates (5), and a horizontal hole (6) is provided on the strip steel plates (5). The bolt A (4) passes through the horizontal hole (6), and the bolt A (4) and the horizontal hole (6) can slide relatively horizontally. The outer end of the bolt A (4) is provided with a nut A (7), and the strip steel plate (5) is fixed to the column (2) through the nut A (7); the front end of the strip steel plate (5) is welded with an inverted U-shaped clamp (8), the inner width of the inverted U-shaped clamp (8) is equal to the thickness of the wing plate of the foundation pit I-beam purlin (9), and the inverted U-shaped clamp (8) is clamped on the wing plate of the I-beam purlin (9). A long screw (10) passes between the horizontal bar holes (6) at the rear of the two strip steel plates (5), and nuts B (11) are provided at both ends of the long screw (10). The long screw (10) can slide horizontally along the horizontal bar holes (6), and the two strip steel plates (5) are connected together through the long screw (10) and the nut B (11).

2. The anti-dumping device for a foundation pit safety ladder cage according to claim 1 is characterized in that: The inverted U-shaped clip (8) is fixed together with the I-beam purlin (9).

3. The anti-dumping device for a foundation pit safety ladder cage according to claim 1 is characterized in that: The length of the inverted U-shaped clip (8) is 15-30 cm.

4. The anti-dumping device for a foundation pit safety ladder cage according to claim 1 is characterized in that: Rubber gaskets (12) are provided between the nut A (7), the nut B (11) and the strip steel plate (5).

5. The anti-dumping device for a foundation pit safety ladder cage according to claim 1 is characterized in that: The inner surface of the inverted U-shaped clamp (8) is provided with an anti-slip pad.

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