CN214993906U

CN214993906U - Supporting construction at foundation ditch edge with prevent function of falling

Info

Publication number: CN214993906U
Application number: CN202120919684.0U
Authority: CN
Inventors: 刘青松; 矫伟刚; 张博; 刘海龙; 高素芳; 王勇; 池刚刚; 闫群涛; 姜奥基
Original assignee: BGI ENGINEERING CONSULTANTS Ltd
Current assignee: BGI ENGINEERING CONSULTANTS Ltd
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2021-12-03
Anticipated expiration: 2031-04-29

Abstract

The utility model relates to the technical field of foundation pit construction auxiliary equipment, in particular to a supporting structure of a foundation pit edge with an anti-falling function, which comprises a plurality of bottom plates arranged side by side and a plurality of vertical plates arranged side by side, wherein the vertical plates are correspondingly arranged above the bottom plates one by one, one end of the bottom plates are hinged with the bottom ends of the vertical plates, the edge of the foundation pit is protected by the combination arrangement of the vertical plates and L-shaped connecting plates, the connecting strength between the bottom plates and the vertical plates is enhanced by a hinging mode, the relative fixation of the positions of the bottom plates and the vertical plates is ensured by a limiting top block, then two adjacent bottom plates are connected by a first limiting connecting block and a second limiting connecting block, and the adjacent first limiting connecting block and the second limiting connecting block are limited in position and the adjacent two L-shaped connecting plates are limited in position by a U-shaped frame to form a relatively stable bottom supporting structure, thereby reducing the occurrence of a falling condition and ensuring that the device has good stability.

Description

Supporting construction at foundation ditch edge with prevent function of falling

Technical Field

The utility model relates to a foundation ditch construction auxiliary assembly technical field especially relates to a supporting construction at foundation ditch edge with prevent function of falling.

Background

The foundation pit refers to a space below the ground excavated for constructing a foundation and a basement of a building (including a structure), the construction cost of a foundation pit supporting project is high, but the foundation pit supporting project is a temporary project and generally does not need to invest more funds, however, once an accident occurs, the treatment is very difficult, and the economic loss and the social influence are very serious.

When the conventional steel support supporting structure is used, due to the influence of various factors such as water retention of a side slope soil layer, damage and water seepage of a pipeline and the like, the side slope is easy to deform and destabilize greatly, so that the steel support is loosened and glides, serious steel support falling safety accidents are caused, and certain potential safety hazards are generated.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a supporting construction at foundation ditch edge with prevent function of falling has solved conventional steel shotcrete supporting construction and when using, arouses slope great deformation, unstability easily, leads to the steel shotcrete to take place not hard up, glide, causes serious steel shotcrete accident of falling, has the problem of certain potential safety hazard.

The utility model provides an above-mentioned technical problem's technical scheme as follows: a supporting structure of a foundation pit edge with an anti-falling function comprises a plurality of bottom plates arranged in parallel and a plurality of vertical plates arranged in parallel, wherein the vertical plates are correspondingly arranged above the bottom plates one by one, one end of each bottom plate is hinged with the bottom ends of the vertical plates, the two sides of each bottom plate are respectively detachably and fixedly connected with a first limit connecting block and a second limit connecting block, the first limit connecting blocks and the second limit connecting blocks on the two adjacent bottom plates are fixedly connected through first U-shaped frames, one ends, close to the vertical plates, of the first limit connecting blocks are fixedly provided with first clamping frames, one ends, close to the vertical plates, of the second limit connecting blocks are fixedly provided with second clamping frames, reinforcing plates are arranged between the first clamping frames and the second clamping frames, and L-shaped connecting plates can be detachably and fixedly connected with the two sides of the vertical plates, two that contact through second U type frame fixed connection between the L type connecting plate, first spacing connecting block with second spacing connecting block is close to the fixed spacing kicking block that is equipped with on the upper surface of the one end of riser, the top of spacing kicking block with the bottom of riser and the bottom butt of L type connecting plate.

The utility model has the advantages that: the combination through riser and L type connecting plate sets up and protects the foundation ditch edge, utilize articulated mode to strengthen the joint strength between bottom plate and the riser, and guarantee the relative fixation of bottom plate and riser position through spacing kicking block, later contact two adjacent bottom plates through first spacing connecting block and second spacing connecting block, and come to carry out the position to adjacent first spacing connecting block and second spacing connecting block and carry out the position to two adjacent L type connecting plates through U type frame and prescribe a limit to and carry out the position to adjacent two, constitute a relatively stable bottom sprag structure, thereby reduce the appearance of the condition of falling, and through the cooperation of two card framves and gusset plate, carry out the shutoff to naked exposure, carry out further enhancement to the stability of structure, thereby guarantee that the device has good stability.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

Further, the first clamping frame comprises a first fixing block abutted against the front face of the vertical plate and a first clamping block arranged on one face, far away from the vertical plate, of the first fixing block, the first fixing block and the first clamping block are both fixedly connected with the upper surface of the first limiting connecting block, and the first clamping block protrudes out of the side face, facing the middle part of the bottom plate, of the first fixing block; the second clamping frame comprises a second fixing block abutted against the front face of the vertical plate and a second clamping block arranged on one face, far away from the vertical plate, of the second fixing block, the second fixing block and the second clamping block are both fixedly connected with the upper surface of the second limiting connecting block, and the second clamping block protrudes out of the side face, facing the middle part of the bottom plate, of the second fixing block; and the reinforcing plate is arranged between the first fixing block and the second fixing block which are positioned on the same bottom plate.

The beneficial effect of adopting the further scheme is that: a gap is formed between the adjacent first fixture block and the second fixture block, a space for arranging the reinforcing plate is formed between the front faces of the first fixture block, the second fixture block and the vertical plate, and the top of the space of the reinforcing plate is slidably inserted into the space, so that the reinforcing plate is convenient to mount.

Furthermore, all be equipped with three connecting hole from top to bottom on first fixture block with the second fixture block, be located same on the bottom plate first fixture block with the centre of second fixture block pass through first screw nut fixed connection between the connecting hole, adjacent two on the bottom plate adjacent first fixture block with two at the bottom of the top of second fixture block the connecting hole is respectively through two second screw nut fixed connection.

The beneficial effect of adopting the further scheme is that: through the setting of through-hole and screw nut, when strengthening the relation between adjacent first card frame and the second card frame, the bottom surface that constitutes a plurality of bottom plate structures is inseparabler, further improvement device prevent falling the performance.

Further, first screw nut with second screw nut all includes a threaded rod and more than four nuts, the threaded rod is located on the both sides of first fixture block and all be equipped with on the both sides of second fixture block the nut.

The beneficial effect of adopting the further scheme is that: the threaded rods on the two sides of the first clamping block are connected with nuts in a threaded mode, the first clamping block is clamped and fixed through the two nuts, the second clamping block is clamped and regulated through the two nuts, and the stability of connection of the threaded rods with the first clamping block and the second clamping block is guaranteed.

Furthermore, the sliding grooves are formed in the two sides of the bottom plate, the first limit connecting block and the second limit connecting block are arranged in the sliding grooves in the two sides of the bottom plate in a sliding mode respectively, and the first limit connecting plate and the second limit connecting plate are fixedly connected with the bottom plate through bolts.

The beneficial effect of adopting the further scheme is that: the side through at the bottom plate sets up the spout, the spacing installation of the first spacing connecting block of being convenient for and the spacing connecting block of second, then fixes bottom plate and first spacing connecting block, the spacing connecting block of second through the bolt, and the connection is stable firm, ensures the security that the device used.

Further, the mounting groove has all been seted up to the both sides of riser, L type connecting plate slides and establishes in the mounting groove, just L type connecting plate pass through the bolt with riser fixed connection.

The beneficial effect of adopting the further scheme is that: through setting up the location installation of the L type connecting plate of being convenient for of mounting groove, then carry out fixed connection with L type connecting plate and riser through the bolt, the firm in connection guarantees the security that the device used.

Further, the upper surface of bottom plate with be equipped with the reinforcing plate between the riser is positive, the one end of reinforcing plate with the positive upper portion of riser is articulated, the other end of reinforcing plate with the upper surface of bottom plate is articulated.

The beneficial effect of adopting the further scheme is that: through the setting of reinforcing plate, can stabilize the relative position between riser and the bottom plate, when guaranteeing structural stability, improve the security that the device used.

Furthermore, first through holes matched with the first U-shaped frame are formed in the end faces, far away from the vertical plate, of the first limiting connecting block and the second limiting connecting block, and two ends of the U-shaped frame are respectively inserted into the two first through holes; and the top end of the L-shaped connecting plate is provided with second through holes matched with the second U-shaped frames, and two ends of each second U-shaped frame are respectively inserted into the two second through holes.

The beneficial effect of adopting the further scheme is that: through the arrangement of the first through hole, the first U-shaped frame can be conveniently inserted, so that the first limit connecting block and the second limit connecting block can be conveniently connected; through the setting of second through-hole, what the second U type of being convenient for was established of inserting to be convenient for two adjacent L type connecting plates connect.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the connection between the middle bottom plate and the vertical plate of the present invention;

fig. 3 is a schematic connection diagram of a first limit connection block and a second limit connection block in the present invention;

FIG. 4 is a schematic view of the connection between the L-shaped connecting plate and the second U-shaped frame;

in the drawings, the components represented by the respective reference numerals are listed below:

1. a base plate; 2. a vertical plate; 3. a chute; 4. a first limit connecting block; 5. a second limit connecting block; 6. a first U-shaped frame; 7. a first clip frame; 8. a second clamping frame; 9. a reinforcing plate; 10. mounting grooves; 11. an L-shaped connecting plate; 12. a second U-shaped frame; 13. a rotating assembly; 14. a reinforcing plate; 15. connecting holes; 16. a first screw nut; 17. a second screw nut; 18. a threaded rod; 19. a nut; 20. a first through hole; 21. a second through hole; 22. a limiting top block; 23. a first fixed block; 24. a first clamping block; 25. a second fixed block; 26. and a second clamping block.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1, 2, 3 and 4, an embodiment of the present invention includes a plurality of bottom plates 1 arranged side by side and a plurality of vertical plates 2 arranged side by side, wherein the bottom plates 1 and the vertical plates 2 are rectangular plates, the width of the bottom plates 1 is the same as the width of the vertical plates 2, the vertical plates 2 are located above the bottom plates 1 in one-to-one correspondence, one end of the bottom plates 1 is hinged to the bottom ends of the vertical plates 2, a first limit connecting block 4 and a second limit connecting block 5 are detachably and fixedly connected to both sides of the bottom plates 1, the first limit connecting block 4 and the second limit connecting block 5 on two adjacent bottom plates 1 are fixedly connected through a first U-shaped frame 6, a first clamping frame 7 is fixedly arranged on one end of the first limit connecting block 4 close to the vertical plate 2, a second clamping frame 8 is fixedly arranged on one end of the second limit connecting block 5 close to the vertical plate 2, first card frame 7 with install gusset plate 9 between the second card frame 8, gusset plate 9 is right bottom plate 1 with the shutoff is carried out in the clearance of the junction of riser 2, all can dismantle fixedly connected with L type connecting plate 11 on the both sides of riser 2, two that contact through second U type frame 12 fixed connection between the L type connecting plate 11, first spacing connecting block 4 with second spacing connecting block 5 is close to the fixed spacing kicking block 22 that is equipped with on the upper surface of the one end of riser 2, the top of spacing kicking block 22 with the bottom of riser 2 and the bottom butt of L type connecting plate 11, it is right that spacing kicking block 22 establishes in the bottom of riser 2 supports the relative fixation of bottom plate 1 with riser 2 position.

As shown in fig. 3, the first clip frame 7 includes a first fixing block 23 abutting against the front surface of the vertical plate 2 and a first clip block 24 disposed on a surface of the first fixing block 23 away from the vertical plate 2, a bottom end of the first fixing block 23 and a bottom end of the first clip block 24 are both fixedly connected to an upper surface of the first limit connecting block 4, and the first clip block 24 protrudes out of a side surface of the first fixing block 23 facing the middle portion of the connected bottom plate 1, so that a step-shaped structure is formed between the first clip block 24 and the first fixing block 23; the second clamping frame 8 comprises a second fixing block 25 abutted to the front face of the vertical plate 2 and a second clamping block 26 arranged on one face, far away from the vertical plate 2, of the second fixing block 25, the second fixing block 25 and the second clamping block 26 are both fixedly connected with the upper surface of the second limiting connecting block 5, and the second clamping block 26 protrudes out of the side face, facing the middle part of the bottom plate 1, of the second fixing block 25, so that a step-shaped structure is formed between the second clamping block 26 and the second fixing block 25; the reinforcing plate 9 is arranged between the first fixing block 23 and the second fixing block 25 which are positioned on the same bottom plate 1, a gap is formed between the adjacent first clamping block 24 and the second clamping block 26, meanwhile, a space for arranging the reinforcing plate 9 is formed between the first clamping block 24 and the second clamping block 26 and the front surface of the vertical plate 2, and the top of the space of the reinforcing plate 9 is slidably inserted in the space, so that the installation of the reinforcing plate 9 is facilitated.

As shown in fig. 3, three connection holes 15 are formed in the first fixture block 24 and the second fixture block 26 from top to bottom, the connection holes 15 in the middle of the first fixture block 24 and the second fixture block 26 on the same bottom plate 1 are fixedly connected through first screw nuts 16, the two connection holes 15 at the top and bottom of the adjacent first fixture block 24 and the second fixture block 26 on the adjacent bottom plate 1 are fixedly connected through two second screw nuts 17, and through the arrangement of the through holes and the screw nuts 19, the connection between the adjacent first fixture frame 7 and the second fixture frame 8 is strengthened, the bottom surface formed by the structures of the plurality of bottom plates 1 is tighter, and the anti-falling performance of the device is further improved. In the present embodiment, three connection holes 15 are provided, but the present invention is not limited to three connection holes, and two or more connection holes are within the protection scope of the present application.

Preferably, the first screw nut 16 and the second screw nut 17 each include a threaded rod 18 and more than four nuts 19, the threaded rods 18 are located on two sides of the first fixture block 24 and two sides of the second fixture block 26, the nuts 19 are respectively arranged on the threaded rods 18 on two sides of the first fixture block 24, the nuts 19 are respectively in threaded connection with the threaded rods 18 on two sides of the first fixture block 24, the first fixture block 24 is clamped and fixed through the two nuts 19, the second fixture block 26 is also clamped and regulated through the two nuts 19, and the stability of connection between the threaded rod 18 and the first fixture block 24 as well as the stability of connection between the threaded rod 18 and the second fixture block 26 are ensured.

In this embodiment, as shown in fig. 3, the sliding grooves 3 have been all seted up to the both sides of bottom plate 1, first limit connection block 4 with second limit connection block 5 slides respectively and establishes in the sliding grooves 3 of bottom plate 1 both sides, first limit connection board with second limit connection board all through the bolt with bottom plate 1 fixed connection, through set up sliding grooves 3 at the side of bottom plate 1, the spacing installation of first limit connection block 4 and second limit connection block 5 of being convenient for, then fix bottom plate 1 with first limit connection block 4, second limit connection block 5 through the bolt, the connection is stable firm, ensures the security that the device used. As shown in fig. 4, mounting grooves 10 have all been seted up to the both sides of riser 2, L type connecting plate 11 slides and establishes in mounting groove 10, just L type connecting plate 11 pass through the bolt with riser 2 fixed connection, the location installation of the L type connecting plate 11 of being convenient for through setting up mounting groove 10, then carry out fixed connection with L type connecting plate 11 and riser 2 through the bolt, the firm in connection guarantees the security that the device used.

Preferably, a reinforcing plate 14 is arranged between the upper surface of the bottom plate 1 and the front surface of the vertical plate 2, one end of the reinforcing plate 14 is hinged with the upper part of the front surface of the vertical plate 2, the other end of the reinforcing plate 14 is hinged with the upper surface of the bottom plate 1, specifically, the front surface of the vertical plate 2 and the upper surface of the bottom plate 1 are fixedly provided with rotating assemblies 13 through screws, the two ends of the reinforcing plate 14 are respectively connected with the two rotating assemblies 13 in a rotating manner, the rotating assemblies 13 comprise a fixed plate provided with a fixed hole and two rotating plates which are arranged on the fixed plate at intervals in parallel, the end part of the reinforcing plate 14 is arranged between the two rotating plates and is rotationally connected with the rotating plates through a bearing, and through the arrangement of the reinforcing plate 14, can stabilize the relative position between riser 2 and the bottom plate 1, when guaranteeing structural stability, improve the security that the device used. The end faces of the first limiting connecting block 4 and the second limiting connecting block 5, which are far away from the vertical plate 2, are provided with first through holes 20 matched with the first U-shaped frame 6, and two ends of the U-shaped frame are respectively inserted into the two first through holes 20; the top end of the L-shaped connecting plate 11 is provided with second through holes 21 matched with the second U-shaped frames 12, two ends of each second U-shaped frame 12 are respectively inserted into the two second through holes 21, and the first U-shaped frames 6 are conveniently inserted through the first through holes 20, so that the first limiting connecting block 4 and the second limiting connecting block 5 are conveniently connected; through the arrangement of the second through holes 21, the insertion of the second U-shaped frame 12 is facilitated, and therefore the connection of two adjacent L-shaped connecting plates 11 is facilitated.

And those not described in detail in this specification are well within the skill of those in the art.

When in use, the bottom plate 1 is arranged at the edge of a foundation pit, the vertical plate 2 is opened, as shown in figure 2, after the vertical plate 2 is ensured to be vertical to the bottom plate 1, two rotating assemblies 13 are fixed by bolts, then the first limit connecting block 4 is clamped into the sliding chute 3 at the left side, the second limit connecting block 5 is clamped into the sliding chute 3 at the right side, then the reinforcing plate 9 is arranged between two clamping frames, at the moment, the limit top block 22 is inserted into the gap between the vertical plate 2 and the bottom plate 1, the bolts between the bottom plate 1 and the limit connecting blocks are screwed down to form a single unit element, the operation is repeated, after a plurality of unit elements are assembled, the first U-shaped frame 6 is inserted into the first through holes 20 of two adjacent unit elements, the L-shaped connecting plate 11 is arranged in the mounting groove 10, the second U-shaped frame 12 is inserted into the second through holes 21 of two adjacent L-shaped connecting plates 11, at the moment, the L-shaped connecting plates 11 are in close contact with the limit top block 22, and then, screwing the bolt between the L-shaped connecting plate 11 and the vertical plate 2, finally, penetrating the threaded rod 18 through the connecting hole 15 and screwing the nut 19, and repeating the operation to finish the installation of the foundation pit supporting structure.

The foundation pit edge is protected through the combination setting of riser 2 and L type connecting plate 11, utilize the mode of rotating the connection to strengthen the joint strength between bottom plate 1 and the riser 2, and guarantee the relative fixation of bottom plate 1 and riser 2 position through spacing kicking block 22, later contact two adjacent bottom plates 1 through first spacing connecting block 4 and second spacing connecting block 5, and come to carry out the position to spacing connecting block and L type connecting plate 11 through U type frame and prescribe a limit to, constitute a relatively stable bottom sprag structure, thereby reduce the appearance of the condition of falling, and through the cooperation of two card framves and gusset plate 9, carry out the shutoff to the bared exposure, carry out further enhancement to the stability of structure, thereby guarantee that the device has good stability. Through-hole and screw nut 19's setting, when strengthening the relation between two adjacent card framves, it is inseparabler with the bottom surface that a plurality of bottom plate 1 structures constitute, further improvement device prevent falling the performance, and set up under the cooperation of rotating assembly 13 and reinforcing plate 14, can stabilize the relative position between riser 2 and the bottom plate 1, when guaranteeing structural stability, the security that improves the device and use.

In the description of the present invention, it is to be understood that the terms "center", "length", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "inner", "outer", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the system or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The supporting structure with the anti-falling function for the edge of the foundation pit is characterized by comprising a plurality of bottom plates (1) arranged in parallel and a plurality of vertical plates (2) arranged in parallel, wherein the vertical plates (2) are positioned above the bottom plates (1) in a one-to-one correspondence manner, one ends of the bottom plates (1) are hinged with the bottom ends of the vertical plates (2), two sides of each bottom plate (1) are respectively detachably and fixedly connected with a first limit connecting block (4) and a second limit connecting block (5), the first limit connecting blocks (4) and the second limit connecting blocks (5) on the two adjacent bottom plates (1) are fixedly connected through first U-shaped frames (6), one ends, close to the vertical plates (2), of the first limit connecting blocks (4) are fixedly provided with first clamping frames (7), one ends, close to the vertical plates (2), of the second limit connecting blocks (5) are fixedly provided with second clamping frames (8), first card frame (7) with install gusset plate (9) between second card frame (8), all can dismantle fixedly connected with L type connecting plate (11), two that contact on the both sides of riser (2) through second U type frame (12) fixed connection between L type connecting plate (11), first spacing connecting block (4) with second spacing connecting block (5) are close to the fixed spacing kicking block (22) that is equipped with on the upper surface of the one end of riser (2), the top of spacing kicking block (22) with the bottom of riser (2) and the bottom butt of L type connecting plate (11).

2. The supporting structure of the edge of the foundation pit with the anti-falling function is characterized in that the first clamping frame (7) comprises a first fixing block (23) abutting against the front surface of the vertical plate (2) and a first clamping block (24) arranged on one surface of the first fixing block (23) far away from the vertical plate (2), the first fixing block (23) and the first clamping block (24) are fixedly connected with the upper surface of the first limit connecting block (4), and the first clamping block (24) protrudes out of the side surface of the first fixing block (23) facing to the middle part of the connected bottom plate (1); the second clamping frame (8) comprises a second fixing block (25) abutted to the front face of the vertical plate (2) and a second clamping block (26) arranged on one face, far away from the vertical plate (2), of the second fixing block (25), the second fixing block (25) and the second clamping block (26) are fixedly connected with the upper surface of the second limiting connecting block (5), and the second clamping block (26) protrudes out of the side face, facing the middle part of the bottom plate (1) to which the second fixing block (25) is connected; and the reinforcing plate (9) is arranged between the first fixing block (23) and the second fixing block (25) which are positioned on the same bottom plate (1).

3. The supporting structure for the edge of the foundation pit with the fall prevention function according to claim 2, wherein the first clamping block (24) and the second clamping block (26) are respectively provided with three connecting holes (15) from top to bottom, the connecting holes (15) in the middle of the first clamping block (24) and the second clamping block (26) on the same bottom plate (1) are fixedly connected through first screw nuts (16), and the two connecting holes (15) at the top and bottom of the adjacent first clamping block (24) and the adjacent second clamping block (26) on the two adjacent bottom plates (1) are respectively fixedly connected through the two second screw nuts (17).

4. The supporting structure of the edge of a foundation pit with a fall arrest function according to claim 3, characterized in that the first screw nut (16) and the second screw nut (17) each comprise a threaded rod (18) and more than four nuts (19), the threaded rod (18) being located on both sides of the first block (24) and the nuts (19) being located on both sides of the second block (26).

5. The supporting structure of the edge of the foundation pit with the anti-falling function according to any one of claims 1 to 4, wherein sliding grooves (3) are formed in both sides of the bottom plate (1), the first limit connecting block (4) and the second limit connecting block (5) are respectively slidably arranged in the sliding grooves (3) in both sides of the bottom plate (1), and the first limit connecting plate and the second limit connecting plate are fixedly connected with the bottom plate (1) through bolts.

6. The supporting structure of the edge of the foundation pit with the anti-falling function according to any one of claims 1 to 4, wherein the vertical plate (2) is provided with mounting grooves (10) on both sides, the L-shaped connecting plate (11) is slidably arranged in the mounting grooves (10), and the L-shaped connecting plate (11) is fixedly connected with the vertical plate (2) through bolts.

7. A supporting structure for the edge of a foundation pit with a fall-preventing function as claimed in any one of claims 1 to 4, wherein a reinforcing plate (14) is provided between the upper surface of the base plate (1) and the front surface of the riser (2), one end of the reinforcing plate (14) is hinged to the upper part of the front surface of the riser (2), and the other end of the reinforcing plate (14) is hinged to the upper surface of the base plate (1).

8. The supporting structure of the edge of the foundation pit with the anti-falling function according to any one of claims 1 to 4, wherein the end surfaces of the first limit connecting block (4) and the second limit connecting block (5) far away from the vertical plate (2) are provided with first through holes (20) matched with the first U-shaped frame (6), and two ends of the U-shaped frame are respectively inserted into the two first through holes (20); the top end of the L-shaped connecting plate (11) is provided with second through holes (21) matched with the second U-shaped frames (12), and two ends of each second U-shaped frame (12) are respectively inserted into the second through holes (21).