Green and environment-friendly protection device for deep foundation pit construction

Abstract

The invention relates to a green and environment-friendly protection device for deep foundation pit construction, and belongs to the technical field of deep foundation pit construction. The device comprises a dustproof net and further comprises a connecting net, a retracting and releasing assembly and a lifting assembly, the connecting net is a grid-shaped flexible net, the size of the unfolded connecting net corresponds to the size of a foundation pit, the connecting net is connected to the dustproof net, the retracting and releasing assembly is arranged at the bottom of the foundation pit, the retracting and releasing assembly is connected with the connecting net, and the lifting assembly is connected with the connecting net. The folding and unfolding assembly is used for driving the connecting net to be folded or unfolded at the bottom of the foundation pit, the lifting assembly is connected with the connecting net, and the lifting assembly is used for driving the unfolded connecting net to move in the foundation pit in the vertical direction. The dustproof screen has the effect of facilitating installation and recovery of the dustproof screen.

Description

Technical Field

[0001] The present application relates to the field of deep foundation pit construction technology, and in particular to a green and environmentally friendly protective device for deep foundation pit construction. Background Art

[0002] With the rapid development of my country's national economy, the construction of urban modernization is also developing continuously, and the development and construction of urban space is becoming more and more urgent. There are more and more underground projects such as underground parking lots, basements, underground subway stations, underground civil air defense projects, etc. The construction of large underground projects is inseparable from deep foundation pit projects. Deep foundation pit refers to the foundation pit with an excavation depth of more than 5 meters, or the depth is not more than 5 meters, but the address conditions, surrounding environment and underground pipelines are particularly complex.

[0003] When carrying out construction work at the foundation pit construction site, a large amount of construction dust will inevitably be generated, which will affect the environment and the production and life of surrounding residents, and is not in line with the concept of green construction. At present, in order to reduce the impact of construction dust on surrounding residents and buildings, dust-proof nets are usually installed above the foundation pit to reduce dust.

[0004] Due to the large size of the foundation pit, the dust net needs to be set up by multiple construction workers on both sides of the foundation pit to pull the dust net synchronously and move it along the foundation pit. At all times, they need to pay attention to avoid the dust net from hooking on the steel bars, formwork and other protruding structures at the edge of the foundation pit, so as to gradually unfold the dust net and cover the opening of the foundation pit. The dust net also needs to be recycled by multiple construction workers. The existing dust net is time-consuming and labor-intensive to install and recycle, which is not convenient for installation and recycling. Summary of the invention

[0005] In order to facilitate the installation and recovery of dustproof nets, the present application provides a green and environmentally friendly protective device for deep foundation pit construction.

[0006] The green and environmentally friendly protection device for deep foundation pit construction provided in this application adopts the following technical solution: A green and environmentally friendly protective device for deep foundation pit construction, including a dustproof net, a connecting net, a retractable assembly and a lifting assembly, wherein the connecting net is a grid-shaped flexible net, and the size of the connecting net after being unfolded corresponds to the size of the foundation pit, the connecting net is connected to the dustproof net, the retractable assembly is arranged at the bottom of the foundation pit, the retractable assembly is connected to the connecting net, the retractable assembly is used to drive the connecting net to be folded or unfolded at the bottom of the foundation pit, the lifting assembly is connected to the connecting net, and the lifting assembly is used to drive the unfolded connecting net to move in the vertical direction in the foundation pit.

[0007] Optionally, the retracting and releasing assembly includes a retracting and releasing rope, a first reel and a second reel, the first reel being arranged at two adjacent corners of the foundation pit, the second reel being arranged at two corners of the foundation pit opposite to the first reel, the first reel and the second reel being connected to the retracting and releasing rope, and the four corners of the connecting net being respectively connected to the retracting and releasing ropes on the two first reels and the two second reels.

[0008] Optionally, a plurality of self-locking universal wheels are provided at the bottom of the first winder and the second winder.

[0009] Optionally, a third winder is provided on both the first winder and the second winder, a guide rope is provided between the two opposite third winders, the direction of the guide rope is consistent with the direction of the retracted and released rope, a plurality of guide rings are provided on the connecting net, and the guide rope passes through the guide rings.

[0010] Optionally, a plurality of anchor rods are arranged around the top of the foundation pit, and rope buckles are arranged on the anchor rods.

[0011] Optionally, a spray pipe is provided on the connecting network, and a plurality of spray heads are connected to the spray pipe.

[0012] Optionally, the lifting assembly includes an airbag, an air pipe and an air storage tank. A plurality of the airbags are arranged on the connecting net. The plurality of airbags are connected to each other through the air pipe. The air storage tank is arranged on one side of the foundation pit and connected to the air pipe. The air storage tank stores a gas with a density lower than that of air.

[0013] Optionally, the lifting assembly includes a winch, and a plurality of winches are arranged around the top of the foundation pit, and the traction rope of the winch is connected to the connecting net of the deployment opening.

[0014] In summary, the present application includes at least one of the following beneficial technical effects: 1. Place the protective net connected with the connecting net at the bottom of the foundation pit, unfold the connecting net along the bottom of the foundation pit through the retractable assembly, and the dustproof net will unfold and cover the bottom of the foundation pit as the connecting net unfolds, and then drive the connecting net to move vertically upward along the foundation pit through the lifting assembly, so that the dustproof net moves to the opening of the foundation pit, and the dustproof net can be fixed, which is convenient for the installation of the dustproof net; when the dustproof net is recovered, the dustproof net is lowered to the bottom of the foundation pit, and the connecting net is retracted through the retractable assembly, so as to facilitate the retraction of the dustproof net; thereby achieving the effect of facilitating the installation and recovery of the dustproof net; 2. Place the dust net at the bottom of the foundation pit and connect the retractable assembly and the lifting assembly to realize the automatic installation and recovery of the dust net, thereby improving construction efficiency; 3. There is no need for construction workers to manually unfold and pull the dust-proof net to cover the foundation pit, which reduces the labor intensity of construction workers and reduces labor costs; 4. There is no need for operators to lay protective nets around the foundation pit, which reduces the risk of falling during construction near the foundation pit and reduces construction safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of Example 1 of the present application.

[0016] Figure 2 It is a schematic diagram for illustrating the structure of the retractable component in the embodiment of the present application.

[0017] Figure 3 It is a partial enlarged view used to show the structure of the dustproof net in the embodiment of the present application.

[0018] Figure 4 It is a structural diagram of Example 2 of the present application.

[0019] Description of reference numerals: 1. Dust-proof net; 2. Connecting net; 3. Retracting and releasing assembly; 31. Retracting and releasing rope; 32. First reel; 33. Second reel; 34. Self-locking universal wheel; 35. Third reel; 36. Guide rope; 37. Guide ring; 4. Lifting assembly; 41. Air bag; 42. Air pipe; 43. Air tank; 44. Winch; 51. Anchor rod; 52. Rope buckle; 61. Spray pipe; 62. Spray head. DETAILED DESCRIPTION

[0020] The following is combined with Figure 1-4 This application is described in further detail.

[0021] The present application embodiment discloses a green environmental protection device for deep foundation pit construction, referring to Figure 1-Figure 3 A green and environmentally friendly protective device for deep foundation pit construction includes a dustproof net 1, a connecting net 2, a retractable assembly 3 and a lifting assembly 4. The dustproof net 1 is a common dustproof net 1 for construction sites on the market. The connecting net 2 is in a grid shape, and the connecting net 2 is a flexible net woven from a flexible rope body, so that the connecting net 2 can be folded or unfolded. The shape and size of the connecting net 2 after unfolding corresponds to the shape and size of the foundation pit. The connecting net 2 is fixedly connected to the dustproof net 1, so that the dustproof net 1 can be folded as the connecting net 2 is folded, and can be unfolded as the connecting net 2 is unfolded. The retractable assembly 3 is arranged at the bottom of the foundation pit, and the retractable assembly 3 is connected to the connecting net 2. The retractable assembly 3 is used to drive the connecting net 2 to unfold or fold at the bottom of the foundation pit along the range of the foundation pit. The lifting assembly 4 is connected to the connecting net 2, and the lifting assembly 4 is used to drive the connecting net 2 in an unfolded state to move in the vertical direction in the foundation pit.

[0022] The installation of the traditional dust-proof net 1 requires the cooperation of multiple construction workers to unfold the dust-proof net 1 from one end of the foundation pit and pull it to the other end of the foundation pit, so that the dust-proof net 1 covers the opening of the foundation pit. During this period, multiple construction workers are required to pull the dust-proof net 1 on both sides of the foundation pit, and multiple construction workers are required to unfold the dust-proof net 1 on both sides of the foundation pit. The installation and recovery of the dust-proof net 1 are both time-consuming and laborious. In the embodiment of the present application, it is only necessary to place the protective net connected to the connecting net 2 at the bottom of the foundation pit, and unfold the connecting net 2 along the bottom of the foundation pit through the retractable assembly 3. The dust-proof net 1 unfolds and covers the bottom of the foundation pit as the connecting net 2 is unfolded, and then the connecting net 2 is driven to move vertically upward along the foundation pit through the lifting assembly 4, so that the dust-proof net 1 moves to the opening of the foundation pit, and the dust-proof net 1 is fixed, which is convenient for the installation of the dust-proof net 1; when the dust-proof net 1 is recovered, the dust-proof net 1 is lowered to the bottom of the foundation pit, and the connecting net 2 is retracted through the retractable assembly 3, so as to facilitate the retraction of the dust-proof net 1. By placing the dustproof net 1 at the bottom of the foundation pit and connecting the retractable component 3 and the lifting component 4, the dustproof net 1 can be automatically installed and recovered, thereby improving construction efficiency; there is no need for construction workers to manually unfold and pull the dustproof net 1 to cover the foundation pit, thereby reducing the labor intensity of construction workers and cutting labor costs; and reducing safety hazards for construction workers when constructing around the foundation pit.

[0023] Reference Figure 1-Figure 3 The retracting assembly 3 includes a retracting rope 31, a first reel 32 and a second reel 33. The bottom of the first reel 32 and the second reel 33 are both installed with a plurality of self-locking universal wheels 34, so as to facilitate the movement of the first reel 32 and the second reel 33 at the bottom of the foundation pit. The foundation pit is generally rectangular. When the dustproof net 1 is installed, the first reel 32 and the second reel 33 can be lowered to the bottom of the foundation pit by a hoisting device, and the two first reels 32 can be moved to the two adjacent corners of the foundation pit, and the two second reels 33 can be moved to the two corners of the foundation pit opposite to the two first reels 32. The first reel 32 and the second reel 33 are fixed. The retracting rope 31 is a flexible rope body. The first reel 32 and the second reel 33 are both connected to the retracting rope 31. The four corners of the connecting net 2 are respectively connected to the retracting ropes 31 on the two first reels 32 and the two second reels 33.

[0024] The four corners of the connecting net 2 are respectively connected to the first winder 32 and the second winder 33 through the reel-and-release rope 31. Through the cooperation of the first winder 32 and the second winder 33, the connecting net 2 is unfolded and straightened at the bottom of the foundation pit, thereby realizing the unfolding of the dust-proof net 1; when the dust-proof net 1 is recovered, through the cooperation of the first winder 32 and the second winder 33, the connecting net 2 and the dust-proof net 1 are rolled up between the two first winders 32 or the two second winders 33, so as to facilitate the recovery of the dust-proof net 1.

[0025] Reference Figure 1-Figure 3The first winder 32 and the second winder 33 are both provided with a third winder 35, and a guide rope 36 is provided between the two opposite third winders 35. The direction of the guide rope 36 is consistent with the direction of the retracting rope 31, and the guide rope 36 is stretched between the two third winders 35. A plurality of guide rings 37 are provided on both sides of the connecting net 2, and the guide rope 36 passes through the plurality of guide rings 37. The guide rope 36 plays a role of limiting and guiding the connecting net 2, so that the connecting net 2 can only be unfolded or retracted along the direction of the guide rope 36, which is convenient for unfolding the connecting net 2.

[0026] Reference Figure 1-Figure 3 , multiple anchor rods 51 are installed around the top of the foundation pit, and rope buckles 52 are installed at the ends of the anchor rods 51. When the connection net 2 rises to the top of the foundation pit under the drive of the lifting assembly 4, the connection net 2 is connected to the multiple rope buckles 52, so as to facilitate the installation and fixation of the dustproof net 1. Further, multiple spray pipes 61 are installed at intervals on the connection net 2, and multiple spray heads 62 are connected and installed on the spray pipes 61. The spray heads 62 extend toward the bottom of the foundation pit, and a water supply device is provided on the ground. When the connection net 2 rises to the top of the foundation pit, the spray pipe is connected to the water supply device on the ground, so as to realize the spray dust reduction in the foundation pit and further improve the dust reduction effect. It should be noted that the length direction of the spray pipe 61 is perpendicular to the extension direction of the connection net 2. When the connection net 2 is folded, the multiple spray pipes 61 are close to each other, and the spray pipe 61 will not be folded or bent.

[0027] Reference Figure 1-Figure 3 In this embodiment 1, the lifting assembly 4 includes an airbag 41, an air pipe 42 and an air tank 43. The airbag 41 is in a long strip shape. A plurality of airbags 41 are arranged on the connecting net 2. The length direction of the airbag 41 is perpendicular to the extension and contraction direction of the connecting net 2. The plurality of airbags 41 are connected through the flexible air pipe 42. The air tank 43 is arranged on one side of the foundation pit and is connected to the air pipe 42. The gas with a density lower than that of air is stored in the air tank 43. When the connecting net 2 drives the dustproof net 1 to unfold in place at the bottom of the foundation pit, the gas in the air tank 43 is transported to the airbag 41. The airbag 41 expands and exerts an upward buoyancy on the connecting net 2, thereby driving the connecting net 2 and the dustproof net 1 to move upward along the foundation pit. It should be noted that during the upward movement of the connecting net 2, the first winder 32, the second winder 33 and the third winder 35 are synchronously started to release the wire, so that the connecting net 2 can move upward smoothly, and at the same time, the moving position of the connecting net 2 is controlled.

[0028] Reference Figure 4In Example 2 of the present application, the lifting assembly 4 includes a winch 44, and multiple winches 44 are arranged around the top of the skill. The traction rope of the winch 44 extends vertically downward into the foundation pit. After the connecting net 2 is unfolded in place at the bottom of the foundation pit, the traction rope of the winch 44 is connected to the connecting net 2, and the multiple winches 44 are started synchronously, thereby driving the connecting net 2 and the dustproof net 1 to rise from the bottom of the foundation pit to the top of the foundation pit.

[0029] The implementation principle of a green environmental protection device for deep foundation pit construction in the embodiment of the present application is as follows: a protective net connected with a connecting net 2 is placed at the bottom of the foundation pit, the connecting net 2 is unfolded along the bottom of the foundation pit by the retracting assembly 3, and the dustproof net 1 is unfolded to cover the bottom of the foundation pit as the connecting net 2 is unfolded, and then the connecting net 2 is driven by the lifting assembly 4 to move vertically upward along the foundation pit, so that the dustproof net 1 moves to the opening of the foundation pit, and the dustproof net 1 is fixed, which is convenient for the installation of the dustproof net 1; when the dustproof net 1 is recovered, the dustproof net 1 is lowered to the bottom of the foundation pit, and the connecting net 2 is retracted by the retracting assembly 3, so as to facilitate the retraction of the dustproof net 1. Placing the dustproof net 1 at the bottom of the foundation pit and connecting the retracting assembly 3 and the lifting assembly 4 can realize the automatic installation and recovery of the dustproof net 1, thereby improving the construction efficiency.

[0030] Finally, it should be noted that in the description of this application, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this application.

[0031] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A green and environmentally friendly protective device for deep foundation pit construction, comprising a dustproof net (1), characterized in that: The invention also comprises a connecting net (2), a retractable assembly (3) and a lifting assembly (4); the connecting net (2) is a grid-shaped flexible net, and the size of the connecting net (2) after being unfolded corresponds to the size of the foundation pit; the connecting net (2) is connected to the dustproof net (1); the retractable assembly (3) is arranged at the bottom of the foundation pit; the retractable assembly (3) is connected to the connecting net (2); the retractable assembly (3) is used to drive the connecting net (2) to be folded or unfolded at the bottom of the foundation pit; the lifting assembly (4) is connected to the connecting net (2); the lifting assembly (4) is used to drive the unfolded connecting net (2) to move in the vertical direction in the foundation pit.

2. A green environmental protection device for deep foundation pit construction according to claim 1, characterized in that: The retracting and unwinding assembly (3) comprises a retracting and unwinding rope (31), a first reel (32) and a second reel (33); the first reel (32) is arranged at two adjacent corners of the foundation pit; the second reel (33) is arranged at two corners of the foundation pit opposite to the first reel (32); the first reel (32) and the second reel (33) are both connected to the retracting and unwinding rope (31); and the four corners of the connecting net (2) are respectively connected to the retracting and unwinding ropes (31) on the two first reels (32) and the two second reels (33).

3. A green environmental protection device for deep foundation pit construction according to claim 2, characterized in that: A plurality of self-locking universal wheels (34) are provided at the bottom of each of the first winder (32) and the second winder (33).

4. A green environmental protection device for deep foundation pit construction according to claim 2, characterized in that: A third winder (35) is provided on both the first winder (32) and the second winder (33); a guide rope (36) is provided between the two opposite third winders (35); the direction of the guide rope (36) is consistent with the direction of the retractable rope (31); a plurality of guide rings (37) are provided on the connecting net (2); and the guide rope (36) passes through the guide rings (37).

5. The green environmental protection device for deep foundation pit construction according to claim 1 is characterized by: A plurality of anchor rods (51) are arranged around the top of the foundation pit, and rope buckles (52) are arranged on the anchor rods (51).

6. A green environmental protection device for deep foundation pit construction according to claim 1, characterized in that: A spray pipe (61) is arranged on the connection net (2), and a plurality of spray heads (62) are connected to the spray pipe (61).

7. The green environmental protection device for deep foundation pit construction according to claim 1 is characterized by: The lifting assembly (4) comprises an air bag (41), an air pipe (42) and an air storage tank (43). A plurality of the air bags (41) are arranged on the connection net (2). The plurality of air bags (41) are connected via the air pipe (42). The air storage tank (43) is arranged on one side of the foundation pit and is connected to the air pipe (42). The air storage tank (43) stores a gas having a density lower than that of air.

8. The green environmental protection device for deep foundation pit construction according to claim 1 is characterized by: The lifting assembly (4) comprises a winch (44), and a plurality of winches (44) are arranged around the top of the foundation pit. The traction rope of the winch (44) is connected to the connection net (2) of the deployment opening.

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